Jump to content

2012 Atlantic hurricane season: Difference between revisions

From Wikipedia, the free encyclopedia
Content deleted Content added
Line 1: Line 1:
{{Use mdy dates|date=September 2012}}
{{Infobox hurricane season
| Basin=Atl
| Year=2012
| Track=2012 Atlantic hurricane season summary map.png
| First storm formed=May 19, 2012
| Last storm dissipated=Season currently active
| Strongest storm name=Michael
| Strongest storm pressure=964
| Strongest storm winds=100
| Total depressions=19
| Total storms=18
| Total hurricanes=9
| Total intense=1
| Damagespre=~
| Damages=2577
| Fatalities=67 direct, 7 indirect
| five seasons=[[2010 Atlantic hurricane season|2010]], [[2011 Atlantic hurricane season|2011]], '''2012''', [[List of tropical cyclone names|Post-2012]]
| Season timeline=Timeline of the 2012 Atlantic hurricane season
}}
The '''2012 Atlantic hurricane season''' is an event in the annual cycle of [[tropical cyclone]] formation. The season officially began on Friday, June&nbsp;1, 2012, and ends on Friday, November&nbsp;30, 2012. These dates conventionally delimit the period of each year when most tropical cyclones develop in the Atlantic basin.<ref>{{Cite web|last=Dorst|first=Neal|title=When is hurricane season?|url=http://www.aoml.noaa.gov/hrd/tcfaq/G1.html|publisher=Atlantic Oceanographic and Meteorological Laboratory|accessdate=November 25, 2010| archiveurl= http://web.archive.org/web/20101206195446/http://www.aoml.noaa.gov/hrd/tcfaq/G1.html| archivedate= 6 December 2010 <!--DASHBot-->| deadurl= no}}</ref>

The season experienced an early burst of activity when Tropical Storm Alberto and [[Tropical Storm Beryl (2012)|Tropical Storm Beryl]] both developed several&nbsp;days before the official start of the season, an occurrence not seen since the [[1908 Atlantic hurricane season]].<ref name="61two">{{Cite web|author=Robbie Berg|date=June 1, 2012|title=Tropical Weather Outlook|publisher=National Hurricane Center|accessdate=June 2, 2012|url=http://www.nhc.noaa.gov/archive/text/TWOAT/2012/TWOAT.201206010504.txt|format=TXT}}</ref> When [[Tropical Storm Debby (2012)|Tropical Storm Debby]] formed on June 23, it was the first time that four storms formed before July since record keeping began in 1851. The record pace stopped in July, with no tropical cyclones forming in July for the first time since [[2009 Atlantic hurricane season|2009]]. This quiet streak quickly ended with [[Hurricane Ernesto (2012)|Ernesto]] on August 1.<ref>{{cite report|author=Richard Pasch|date=August 2, 2012|title=[[Tropical Storm Ernesto (2012)|Tropical Storm Ernesto]] Discussion Number Five|accessdate=August 2, 2012|publisher=National Hurricane Center|url=http://www.nhc.noaa.gov/archive/2012/al05/al052012.discus.005.shtml?}}</ref>
Eight named storms then formed in August, tying the record of most named storms for the month set in [[2004 Atlantic hurricane season|2004]]. Several storms have affected land, including the destructive [[Hurricane Isaac (2012)|Hurricane Isaac]], which wrought extensive damage along the Gulf Coast and especially in the state of Louisiana. Tropical Storm Joyce, Hurricane Kirk, [[Hurricane Leslie (2012)|Hurricane Leslie]], and Hurricane Michael became the second earliest tenth, eleventh, twelfth, and third earliest thirteenth named storms, respectively. [[Hurricane Nadine (2012)|Hurricane Nadine]] became the 5th longest-lasting tropical cyclone on record, while tropical storms Oscar and Patty had very short lives.

__TOC__
{{Clear}}

==Seasonal forecasts==
{| class="toccolours" cellspacing=0 cellpadding=3 style="float:right; margin-left:1em; text-align:right; clear: right;"
|+'''Predictions of tropical activity in the 2012 season'''
|- style="background:#ccf; text-align:center;"
||'''Source'''
||'''Date'''
||'''<span style="font-size: 80%;">Named<br />storms</span>'''
||'''<span style="font-size: 80%;">Hurricanes</span>'''
||'''<span style="font-size: 80%;">Major<br />hurricanes</span>'''
|-
| style="text-align:center;" colspan="2"|''Average <span style="font-size: 80%;">(1950–2000)<ref name="Gray Dec"/></span>''
|9.6
|5.9
|2.3
|-
| style="text-align:center;" colspan="2"|''Record high activity''
|[[2005 Atlantic hurricane season|28]]
|[[2005 Atlantic hurricane season|15]]
|[[1950 Atlantic hurricane season|8]]
|-
| style="text-align:center;" colspan="2"|''Record low activity''
|[[1983 Atlantic hurricane season|4]]
|[[1982 Atlantic hurricane season|2]]
|[[1994 Atlantic hurricane season|0]]†
|-
| colspan="6" style="text-align:center;"|–––––––––––––––––––––––––––––––––––––––––––––––––––––––
|-
|align="left"|TSR
|align="left"|December&nbsp;7, 2011<ref name="DECTSRforecast" />
|14
|7
|3
|-
|align="left"|WSI
|align="left"|December&nbsp;21, 2011<ref name=WSIforecast/>
|12
|7
|3
|-
|align="left"|[[Colorado State University|CSU]]
|align="left"|April&nbsp;4, 2012<ref name="AprilCSU">{{Cite web|url=http://tropical.atmos.colostate.edu/forecasts/2012/apr2012/apr2012.pdf|title=Extended Range Forecast of Atlantic Seasonal Hurricane Activity and U.S. Landfall Strike Probability for 2012|author1=Philip Klotzbach|author2=William Gray|date=April 4, 2012|publisher=Colorado State University|accessdate=May 20, 2012}}</ref>
|10
|4
|2
|-
|align="left"|TSR
|align="left"|April&nbsp;12, 2012<ref name="AprilTSR">{{cite report|last1=Saunders|first1=Mark|last2=Lea|first2=Adam|date=April 12, 2012|title=April Forecast Update for Atlantic Hurricane Activity in 2012|url=http://www.tropicalstormrisk.com/docs/TSRATLForecastApr2012.pdf|publisher=Tropical Storm Risk|format=PDF|accessdate=August 10, 2012}}</ref>
|13
|6
|3
|-
|align="left"|[[The Weather Channel|TWC]]
|align="left"|April&nbsp;24, 2012<ref name="AprilTWC">{{Cite web|url=http://www.weather.com/news/weather-hurricanes/hurricane-season-forecast-20120424|title=2012 Hurricane Season Forecast|last=Dolce|first=Chris|date=April 24, 2012|publisher=The Weather Channel|accessdate=August 10, 2012}}</ref>
|11
|6
|2
|-
|align="left"|TSR
|align="left"|May&nbsp;23, 2012<ref name="MAYTSRforecast">{{cite report|format=PDF|author=Mark Saunders|author2=Adam Lea|title=Extended Range Forecast for Atlantic Hurricane Activity in 2012|url= http://tropicalstormrisk.com/docs/TSRATLPreSeason2012.pdf|publisher=Tropical Storm Risk|accessdate=June 1, 2012|date=May 23, 2012}}</ref>
|13
|6
|3
|-
|align="left"|[[UKMO]]
|align="left"|May&nbsp;24, 2012<ref name="UKMET forecast">{{Cite news|title=Met Office predicts quieter tropical storm season|url=http://www.metoffice.gov.uk/news/releases/archive/2012/tropical-storm-forecast|accessdate=May 24, 2012|date=May 24, 2012}}</ref>
|10*
|N/A
|N/A
|-
|align="left"|[[NOAA]]
|align="left"|May&nbsp;24, 2012<ref name="NOAA forecast"/>
|9-15
|4-8
|1-3
|-
|align="left"|[[Florida State University|FSU COAPS]]
|align="left"|May&nbsp;30, 2012<ref name="FSU forecast">{{Cite web|url=http://coaps.fsu.edu/hurricanes/index.php|title=2012 FSU COAPS Atlantic Hurricane Season Forecast|date=May 30, 2012|publisher=Center for Ocean-Atmospheric Prediction Studies (COAPS), Florida State University|accessdate=August 10, 2012}}</ref>
|13
|7
|N/A
|-
|align="left"|CSU
|align="left"|June&nbsp;1, 2012<ref name="JuneCSU">{{Cite web|url=http://tropical.atmos.colostate.edu/forecasts/2012/june2012/jun2012.pdf|title=Extended Range Forecast of Atlantic Seasonal Hurricane Activity and U.S. Landfall Strike Probability for 2012|author=Philip Klotzbach|author2=William Gray|date=June 1, 2012|publisher=Colorado State University|accessdate=June 1, 2012}}</ref>
|13
|5
|2
|-
|align="left"|TSR
|align="left"|June&nbsp;6, 2012<ref name="JuneTSR">{{Cite web|url= http://www.tropicalstormrisk.com/docs/TSRATLForecastJun2012.pdf|title=June Forecast Update for Atlantic Hurricane Activity in 2012|author1=Mark Saunders|author2=Adam Lea|date=June 6, 2012|publisher=Tropical Storm Risk|accessdate=June 6, 2012}}</ref>
|14
|6
|3
|-
|align="left"|NOAA
|align="left"|August&nbsp;9, 2012<ref name="AugustNOAA">{{cite report|url=http://www.noaanews.noaa.gov/stories2012/20120809_atlantic_hurricane_season_update.html|title=NOAA raises hurricane season prediction despite expected El Niño|date=August 9, 2012|publisher=NOAA|accessdate=August 9, 2012}}</ref>
|12-17
|5-8
|2-3
|-
| colspan="6" style="text-align:center;"|–––––––––––––––––––––––––––––––––––––––––––––––––––––––
|-
|align="left"|
|align="left"|'''Actual activity'''<br />
|18
|9
|1
|-
| style="text-align:left;" colspan="5"|* June–November only.<br/>† Most recent of several such occurrences. ([[List of Atlantic hurricane records#Seasonal activity|See all]])
|}
[[Tropical cyclone seasonal forecasting|Forecasts of hurricane activity]] are issued before each hurricane season by noted hurricane experts Philip J. Klotzbach, [[William M. Gray]], and their associates at [[Colorado State University]]; and separately by [[National Oceanic and Atmospheric Administration|NOAA]] forecasters. CSU's December 2011 discussion was notable in that the forecasting team announced it would no longer attempt [[quantitative research|quantitative]] forecasting nearly six months out, noting "...forecasts of the last 20 years have not shown real-time forecast skill." They will, however, release a quantitative forecast for 2012 in April.<ref>{{Cite web|author=Philip J. Klotzbach and William M. Gray|title=Qualitative Discussion of Atlantic Basin Seasonal Hurricane Activity for 2012|publisher=Colorado State University|accessdate=December 31, 2011|url=http://hurricane.atmos.colostate.edu/forecasts/2011/dec2011/dec2011.pdf}}</ref>

Klotzbach's team (formerly led by Gray) defined the average number of storms per season (1981 to 2010) as 12.1&nbsp;tropical storms, 6.4&nbsp;hurricanes, 2.7&nbsp;major hurricanes (storms reaching at least Category&nbsp;3 strength in the [[Saffir-Simpson Hurricane Scale]]) and ACE Index 96.1.<ref name="Gray Dec">{{Cite web|author1=Philip J. Klotzbach|author2=William M. Gray|date=December 10, 2008|title=Extended Range Forecast of Atlantic Seasonal Hurricane Activity and U.S. Landfall Strike Probability for 2009|publisher=[[Colorado State University]]|accessdate=January 1, 2009|url=http://hurricane.atmos.colostate.edu/Forecasts/2008/dec2008/dec2008.pdf|format=PDF|archiveurl=http://www.webcitation.org/5hT3hN5th|archivedate=June 12, 2009}}</ref> [[National Oceanic and Atmospheric Administration|NOAA]] defines a season as above-normal, near-normal or below-normal by a combination of the number of named storms, the number reaching hurricane strength, the number reaching major hurricane strength and [[Accumulated cyclone energy|ACE Index]].<ref>{{Cite web|author=[[National Hurricane Center]]|publisher=[[National Oceanic and Atmospheric Administration]]|url=http://www.webcitation.org/5hT3hpJ7F|date=May 22, 2008|accessdate=April 14, 2009 |title=NOAA Atlantic Hurricane Season Classifications}}</ref>

===Pre-season forecasts===
On December&nbsp;7, 2011, ''Tropical Storm Risk'' (TSR), a public [[consortium]] consisting of experts on insurance, risk management, and seasonal climate forecasting at [[University College London]], issued an extended-range forecast predicting an above-average hurricane season. In its report, TSR noted that tropical cyclone activity could be about 49% above the 1950–2010&nbsp;average, with 14.1 (±4.2) tropical storms, 6.7 (±3.0) hurricanes, and 3.3 (±1.6) major hurricanes anticipated, and a cumulative ACE index of 117 (±58).<ref name=DECTSRforecast>{{cite report|format=PDF|author=Mark Saunders|author2=Adam Lea|title=Extended Range Forecast for Atlantic Hurricane Activity in 2012|url=http://tropicalstormrisk.com/docs/TSRATLForecastDec2012.pdf|publisher=Tropical Storm Risk|accessdate=December 7, 2011|date=December 7, 2011}}</ref> Later that month on December&nbsp;21, ''[[Weather Services International]]'' (WSI) issued an extended-range forecast predicting a near average hurricane season. In its forecast, WSI noted that a cooler [[North Atlantic Oscillation]] not seen in a decade, combined with weakening [[La Niña]], would result in a near-average season with 12&nbsp;named storms, 7&nbsp;hurricanes, and 3&nbsp;major hurricanes. They also predicted a near-average probability of a hurricane landfall on the United States coastline, with a slightly elevated chance on the [[United States Gulf Coast|Gulf Coast]] and a slightly reduced chance along the [[United States East Coast|East Coast]].<ref name=WSIforecast>{{Cite web|author=Linda Maynard|title=WSI: Cooler Atlantic, Waning La Nina Suggest Relatively Tame 2012 Tropical Season|url=http://www.wsi.com/f7754fbd-6501-42e6-b316-e8c02e94a818/news-scheduled-forecast-release-details.htm|publisher=WSI Corporation|date=December 21, 2011|accessdate=January 5, 2012}}</ref> On April&nbsp;4, 2012, Colorado State University (CSU) issued their updated forecast for the season, calling for a below-normal season due to an increased chance for the development of an [[El Niño]] during the season.<ref name="AprilCSU"/> On April&nbsp;12, 2012, Tropical Storm Risk (TSR) issued their update forecast for the season, slightly revising down their predictions as well.<ref name="AprilTSR"/>

On May&nbsp;24, 2012, NOAA released their forecast for the season, predicting a near-normal season (nine to 15 named storms, four to eight hurricanes, and one to three major hurricanes of Category&nbsp;3 strength or higher on the Saffir-Simpson Hurricane Scale). NOAA based its forecast on higher wind shear, cooler temperatures in the Main Development Region of the Eastern Atlantic, and the continuance of the "high activity" era (i.e. [[Atlantic multidecadal oscillation]] warm phase) which began in 1995. Gerry Bell, lead seasonal forecaster at NOAA's [[Climate Prediction Center]], added the main uncertainty in the outlook was how much below or above the 2012 season would be, and whether the high end of the predicted range is reached dependent on whether El Niño develops or stays in its current Neutral phase.<ref name="NOAA forecast">{{Cite web|title=NOAA predicts a near-normal 2012 Atlantic hurricane season|url=http://www.noaanews.noaa.gov/stories2012/20120524_atlantic_hurricane_season.html|publisher=National Oceanic and Atmospheric Administration|accessdate=May 29, 2012|date=May 24, 2012}}</ref> That same day, the United Kingdom [[Met Office]] (UKMO) issued a forecast of a below-average season. They predicted 10 named storms with a 70% chance that the number would be between 7 and 13. However, they do not issue forecasts on the number of hurricanes and major hurricanes. They also predicted an ACE index of 90 with a 70% chance that the index would be in the range 28 to 152.<ref name="UKMET forecast"/> On May&nbsp;30, 2012, the Florida State University for Ocean-Atmospheric Prediction Studies (FSU COAPS) issued its annual Atlantic hurricane season forecast. The organization predicted 13 named storms, including 7 hurricanes, and an ACE index of 122.<ref name="FSU forecast"/>

===Mid-season outlooks===
[[File:Atlantic Hurricanes Aug 30 2012 1445Z.png|thumb|250px|From left to right: [[Hurricane Isaac (2012)|Tropical Storm Isaac]] inland over Louisiana, Hurricane Kirk in the open Atlantic, and the predecessor to [[Hurricane Leslie (2012)|Hurricane Leslie]] in the central Atlantic. Hurricane Ileana is also visible in the eastern Pacific.]]
On June&nbsp;1, 2012, Klotzbach's team issued their first updated forecast for the 2012 season, predicting 13 named storms, 5 hurricanes, and 2 major hurricanes. The university said there were large amounts of uncertainty concerning the phase of the ENSO as well as in Atlantic basin conditions. The organization also said the chance of a major hurricane hitting the U.S. coast was 48%, compared to an average of 52% over the past 100 years. The chance of a major hurricane hitting the Florida peninsula and the U.S. East Coast is 28%, compared to an average of 31% over the past 100 years.<ref name="JuneCSU"/> On June&nbsp;6, Tropical Storm Risk issued their June update for Atlantic hurricane activity for the 2012 season, predicting 14 named storms, 6 hurricanes, 3 major hurricanes, and an ACE index of 100. The agency noted that they anticipated the trade wind predictor to have a small suppressing effect on activity, and sea surface temperatures would provide a neutral effect. They continue with their forecast of a near-average chance of U.S. landfall activity using the 1950–2011 long term norm, but a slightly below-average chance of U.S. landfall activity using the recent 2002–2011 10-year norm.<ref name="JuneTSR"/>

{{clear}}

On August 9, 2012, [[NOAA]] revised its predictions saying more named storms are likely in this Atlantic hurricane season, as 3 tropical cyclones formed in the first week of August, even though a weak [[El Niño]] had formed.
The agency now predicts between 12 and 17 named storms from the period that started on June 1 and will end on November 30. NOAA's original May prediction was between nine and 15 named storms.<ref name="AugustNOAA"/>

==Storms==
==Storms==
{{Main|Timeline of the 2012 Atlantic hurricane season}}
{{Main|Timeline of the 2012 Atlantic hurricane season}}
Line 172: Line 17:
id:canvas value:gray(0.88)
id:canvas value:gray(0.88)
id:GP value:red
id:GP value:red
id:TD value:rgb(0.38,0.73,1) legend:Tropical_Depression_=_&lt;39_mph_(0–62_km/h)_(TD)
id:TD value:rgb(0.38,0.73,1) legend:Tropical_Depression_=_&lt;39_mph_(0–62_km/h)_
id:TS value:rgb(0,0.98,0.96) legend:Tropical_Storm_=_39–73_mph_(63–117 km/h)_(TS)
id:TS value:rgb(0,0.98,0.96) legend:Tropical_Storm_=_39–73_mph_(63–117 km/h)_
id:C1 value:rgb(1,1,0.80) legend:Category_1_=_74–95_mph_(119–153_km/h)_(C1)
id:C1 value:rgb(1,1,0.80) legend:Category_1_=_74–95_mph_(119–153_km/h)_
id:C2 value:rgb(1,0.91,0.46) legend:Category_2_=_96–110_mph_(154–177_km/h)_(C2)
id:C2 value:rgb(1,0.91,0.46) legend:Category_2_=_96–110_mph_(154–177_km/h)_
id:C3 value:rgb(1,0.76,0.25) legend:Category_3_=_111–129_mph_(178–208_km/h)_(C3)
id:C3 value:rgb(1,0.76,0.25) legend:Category_3_=_111–129_mph_(178–208_km/h)_
id:C4 value:rgb(1,0.56,0.13) legend:Category_4_=_130–156_mph_(209–251_km/h)_(C4)
id:C4 value:rgb(1,0.56,0.13) legend:Category_4_=_130–156_mph_(209–251_km/h)_
id:C5 value:rgb(1,0.38,0.38) legend:Category_5_=_≥157_mph_(≥252_km/h)_(C5)
id:C5 value:rgb(1,0.38,0.38) legend:Category_5_=_≥157_mph_(≥252_km/h)_


Backgroundcolors = canvas:canvas
Backgroundcolors = canvas:canvas
Line 211: Line 56:
from:11/10/2012 till:13/10/2012 color:TS text:"Patty"
from:11/10/2012 till:13/10/2012 color:TS text:"Patty"
from:12/10/2012 till:17/10/2012 color:C1 text:"[[Hurricane Rafael (2012)|Rafael]]"
from:12/10/2012 till:17/10/2012 color:C1 text:"[[Hurricane Rafael (2012)|Rafael]]"
from:22/10/2012 till:22/10/2012 color:TS text:"Sandy"
from:22/10/2012 till:23/10/2012 color:TS text:"Sandy"
from:22/10/2012 till:22/10/2012 color:TD text:"Nineteen"
from:22/10/2012 till:23/10/2012 color:TD text:"Nineteen"


bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas
bar:Month width:5 align:center fontsize:S shift:(0,-20) anchor:middle color:canvas
Line 552: Line 397:
* The NHC's [http://www.nhc.noaa.gov/text/refresh/MIATCDAT4+shtml/ latest Forecast Discussion on Tropical Depression Nineteen]
* The NHC's [http://www.nhc.noaa.gov/text/refresh/MIATCDAT4+shtml/ latest Forecast Discussion on Tropical Depression Nineteen]
{{clear}}
{{clear}}

==Storm names==
The following names will be used for named storms that form in the North Atlantic in 2012. Retired names, if any, will be announced by the [[World Meteorological Organization]] in the spring of 2013. The names not retired from this list will be used again in the 2018 season. This is the same list used in the [[2006 Atlantic hurricane season|2006 season]]. The names Kirk, Oscar, Patty, Rafael and Sandy were used for the first time this year. Kirk replaced [[Hurricane Keith|Keith]] after 2000, but was not used in 2006.

{| style="width:90%;"
|
* Alberto
* [[Tropical Storm Beryl (2012)|Beryl]]
* Chris
* [[Tropical Storm Debby (2012)|Debby]]
* [[Hurricane Ernesto (2012)|Ernesto]]
* Florence
* Gordon
|
* [[Tropical Storm Helene (2012)|Helene]]
* [[Hurricane Isaac (2012)|Isaac]]
* Joyce
* Kirk
* [[Hurricane Leslie (2012)|Leslie]]
* Michael
* [[Hurricane Nadine (2012)|Nadine]]
|
* Oscar
* Patty
* [[Hurricane Rafael (2012)|Rafael]]
* {{tcname active|Sandy}}
* {{tcname unused|Tony}}
* {{tcname unused|Valerie}}
* {{tcname unused|William}}
|}

==Season effects==
This is a table of all of the storms that have formed in the 2012 Atlantic hurricane season. It includes their duration, names, landfall(s)–denoted by '''bold''' location names–damages, and death totals. Deaths in parentheses are additional and indirect (an example of an indirect death would be a traffic accident), but were still related to that storm. Damage and deaths include totals while the storm was extratropical, a wave, or a low, and all of the damage figures are in 2012 USD.
{{Saffir-Simpson small|align=center}}<center>
{{TC stats table start3|year=2012|basin=North Atlantic tropical cyclone}}
{{TC stats cyclone3|cat=storm|name=Alberto|dates=May&nbsp;19&nbsp;– May&nbsp;22|max-winds=60 (95)|min-press=995|areas=[[Southeastern United States]]|damage=None|deaths=None}}
{{TC stats cyclone3|cat=storm|name=[[Tropical Storm Beryl (2012)|Beryl]]|dates=May&nbsp;26&nbsp;– May&nbsp;30|max-winds=70 (110)|min-press=992|areas=[[Cuba]], [[The Bahamas]], [[Southeastern United States]] ('''[[Florida]]''')|damage=0.148|deaths=4 (2)}}
{{TC stats cyclone3|cat=cat1|name=Chris|dates=June&nbsp;19&nbsp;– June&nbsp;22|max-winds=75 (120)|min-press=987|areas=[[Bermuda]], [[Atlantic Canada]]|damage=None|deaths=None}}
{{TC stats cyclone3|cat=storm|name=[[Tropical Storm Debby (2012)|Debby]]|dates=June&nbsp;23&nbsp;– June&nbsp;27&nbsp;|max-winds=60 (95)|min-press=990|areas=[[Cuba]], [[Central America]], [[Southeastern United States]] ('''[[Florida]]'''), [[Bermuda]]|damage=308.7|deaths=7 (2)}}
{{TC stats cyclone3|cat=cat1|name=[[Hurricane Ernesto (2012)|Ernesto]]|dates=August&nbsp;1&nbsp;– August&nbsp;10|max-winds=85 (140)|min-press=980|areas=[[Windward Islands]], [[Jamaica]], [[Central America]], [[Mexico]] ('''[[Yucatán Peninsula]]''')|damage=252.2|deaths=12}}
{{TC stats cyclone3|cat=storm|name=Florence|dates=August&nbsp;4&nbsp;– August&nbsp;6|max-winds=60 (95)|min-press=1000|areas=[[Cape Verde]]|damage=None|deaths=None}}
{{TC stats cyclone3|cat=storm|name=[[Tropical Storm Helene (2012)|Helene]]|dates=August&nbsp;9&nbsp;– August&nbsp;19&nbsp;|max-winds=45 (75)|min-press=1004|areas=[[Windward Islands]], [[Trinidad and Tobago]], [[Central America]], '''[[Mexico]]'''|damage=>17|deaths=2}}
{{TC stats cyclone3|cat=cat2|name=Gordon|dates=August&nbsp;15&nbsp;– August&nbsp;20|max-winds=110 (175)|min-press=965|areas=[[Azores]]|damage=Minimal|deaths=None}}
{{TC stats cyclone3|cat=cat1|name=[[Hurricane Isaac (2012)|Isaac]]|dates=August&nbsp;21&nbsp;– September&nbsp;1|max-winds=80 (130)|min-press=968|areas=[[Leeward Islands]], [[Puerto Rico]], [[Hispaniola]] ('''[[Haiti]]'''), '''[[Cuba]]''', [[The Bahamas]], [[Southeastern United States]] ('''[[Louisiana]]'''), [[Midwestern United States]]|damage=~2,000<ref>{{Cite web|author=Manuel Bojorquez|publisher=CBS News|date=September 3, 2012|accessdate=September 11, 2012|title=Hurricane Isaac damage could top $2 billion|url=http://www.cbsnews.com/8301-18563_162-57505291/hurricane-isaac-damage-could-top-$2-billion/}}</ref>|deaths=41 (3)}}
{{TC stats cyclone3|cat=storm|name=Joyce|dates=August&nbsp;22&nbsp;– August&nbsp;24|max-winds=40 (65)|min-press=1006|areas=None|damage=None|deaths=None}}
{{TC stats cyclone3|cat=cat2|name=Kirk|dates=August&nbsp;28&nbsp;– September 2|max-winds=105 (165)|min-press=970|areas=None|damage=None|deaths=None}}
{{TC stats cyclone3|cat=cat1|name=[[Hurricane Leslie (2012)|Leslie]]|dates=August&nbsp;30&nbsp;– September&nbsp;11|max-winds=75 (120)|min-press=968|areas=[[Leeward Islands]], [[Bermuda]], [[Atlantic Canada]] ('''[[Newfoundland (island)|Newfoundland]]'''), [[Iceland]], [[Scotland]]|damage=Unknown|deaths=None}}
{{TC stats cyclone3|cat=cat3|name=Michael|dates=September&nbsp;3&nbsp;– September&nbsp;11|max-winds=115 (185)|min-press=964|areas=None|damage=None|deaths=None}}
{{TC stats cyclone3|cat=cat1|name=[[Hurricane Nadine (2012)|Nadine]]|dates=September&nbsp;11&nbsp;– October&nbsp;4|max-winds=90 (150)|min-press= 978|areas=[[The Azores|Azores]]|damage=Minimal|deaths=None}}
{{TC stats cyclone3|cat=storm|name=Oscar|dates=October&nbsp;3&nbsp;– October&nbsp;5|max-winds=50 (85)|min-press=997|areas=None|damage=None|deaths=None}}
{{TC stats cyclone3|cat=storm|name=Patty|dates=October&nbsp;11&nbsp;– October 13|max-winds=45 (75)|min-press=1005|areas=[[The Bahamas]]|damage=None|deaths=None}}
{{TC stats cyclone3|cat=cat1|name=[[Hurricane Rafael (2012)|Rafael]]|dates=October&nbsp;12&nbsp;– October&nbsp;17|max-winds=90 (150)|min-press=969|areas=[[Leeward Islands]], [[Windward Islands]], [[Bermuda]], [[Atlantic Canada]] ([[Newfoundland (island)|Newfoundland]])|damage=>2|deaths=1}}
{{TC stats cyclone3|cat=storm|name=Sandy|dates=October&nbsp;22&nbsp;– Currently active|max-winds=40 (65)|min-press=999|areas=None|damage=None|deaths=None}}
{{TC stats cyclone3|cat=depression|name=Nineteen|dates=October&nbsp;22&nbsp;– Currently active|max-winds=35 (55)|min-press=1006|areas=None|damage=None|deaths=None}}
{{TC stats table end3|num-cyclones=19|dates=May&nbsp;19 - Currently active<!-- Do not change this until after November 30 -->|max-winds=115 (185)|min-press=964|tot-areas=|tot-damage=~2,579.2|tot-deaths=67 (7)}}</center>

==Accumulated Cyclone Energy (ACE)==
<!--Template for ACE table. Just keep the entries in descending ACE order and the template will handle the table formatting, 3 sig figs, rankings (up to 3 way ties) and totals. Note that there is an empty parameter for each storm in this basin (it is only used in the East/Central Pacific) -->

{{Hurricane season ACE ranking|ref=Talk:2012 Atlantic hurricane season/ACE calcs
| 25.6375| | [[Hurricane Nadine (2012)|Nadine]]
| 16.4975| | Michael
| 14.7500| | [[Hurricane Leslie (2012)|Leslie]]
| 9.4725| | [[Hurricane Isaac (2012)|Isaac]]
| 8.1900| | Gordon
| 7.7050| | [[Hurricane Ernesto (2012)|Ernesto]]
| 7.5100| | Kirk
| 7.1400| | [[Hurricane Rafael (2012)|Rafael]]
| 2.7200| | Chris
| 2.4450| | [[Tropical Storm Debby (2012)|Debby]]
| 1.4375| | Florence
| 1.3750| | Alberto
| 0.9700| | Oscar
| 0.8650| | [[Tropical Storm Beryl (2012)|Beryl]]
| 0.5275| | Patty
| 0.2450| | [[Tropical Storm Helene (2012)|Helene]]
| 0.2450| | Joyce
| 0.1225| | Sandy
}}

The table on the right shows the [[Accumulated cyclone energy|ACE]] for each storm in the season. Broadly speaking, the ACE is a measure of the power of a hurricane multiplied by the length of time it existed, so storms that last a long time, (like Nadine) as well as particularly strong hurricanes (like Michael), have high ACEs. ACE is calculated for only full advisories on specifically tropical systems reaching or exceeding wind speeds of 34&nbsp;knots (39&nbsp;mph, 63&nbsp;km/h), or tropical storm strength. Accordingly, tropical depressions are not included here. The ACE also does not include advisories where a storm is declared to be subtropical, so ACE is not shown when [[#Tropical Storm Beryl|Tropical Storm Beryl]] or [[#Hurricane Nadine|Hurricane Nadine]] were subtropical, for example. Later, the NHC reexamines the data, and produces a final report on each storm, which can lead to the ACE for a storm being revised either upward or downward. Until the final reports are issued, ACEs are, therefore, provisional.
{{clear}}

==See also==
{{Portal|Tropical cyclones}}
*[[List of Atlantic hurricanes]]
*[[List of Atlantic hurricane seasons]]
*[[2012 Pacific hurricane season]]
*[[2012 Pacific typhoon season]]
*[[2012 North Indian Ocean cyclone season]]
*South-West Indian Ocean cyclone seasons: [[2011–12 South-West Indian Ocean cyclone season|2011–12]], [[2012–13 South-West Indian Ocean cyclone season|2012–13]]
*Australian region cyclone seasons: [[2011–12 Australian region cyclone season|2011–12]], [[2012–13 Australian region cyclone season|2012–13]]
*South Pacific cyclone seasons: [[2011–12 South Pacific cyclone season|2011–12]], [[2012–13 South Pacific cyclone season|2012–13]]
{{clear}}

==References==
{{Reflist|colwidth=30em}}

==External links==
* [[Hydrometeorological Prediction Center]]'s [http://www.hpc.ncep.noaa.gov/tropical/rain/2012.html rainfall page for tropical cyclones in 2012]
* [[National Hurricane Center]]'s [http://www.nhc.noaa.gov/text/MIATWOAT.shtml Atlantic Tropical Weather Outlook]
{{2012 Atlantic hurricane season buttons}}
{{2010-2019 Atlantic hurricane seasons}}

[[Category:Atlantic hurricane seasons]]
[[Category:2012 Atlantic hurricane season]]

[[de:Atlantische Hurrikansaison 2012]]
[[es:Temporada de huracanes en el Atlántico de 2012]]
[[fr:Saison cyclonique 2012 dans l'océan Atlantique Nord]]
[[ko:2012년 북대서양 허리케인]]
[[nl:Atlantisch orkaanseizoen 2012]]
[[simple:2012 Atlantic hurricane season]]
[[fi:Vuoden 2012 Atlantin hurrikaanikausi]]
[[zh:2012年大西洋颶風季]]

Revision as of 22:20, 22 October 2012

Storms

Hurricane Rafael (2012)Hurricane Nadine (2012)Hurricane Leslie (2012)Hurricane Isaac (2012)Tropical Storm Helene (2012)Hurricane Ernesto (2012)Tropical Storm Debby (2012)Tropical Storm Beryl (2012)Saffir–Simpson Hurricane Scale

Tropical Storm Alberto

Tropical storm (SSHWS)
 
DurationMay 19 – May 22
Peak intensity60 mph (95 km/h) (1-min);
995 mbar (hPa)

During the early morning hours of May 19, a non-tropical area of low pressure became stationary just offshore of South Carolina while producing organized shower and thunderstorm activity.[1] It quickly gained tropical characteristics over the warm sea surface temperatures of the Gulf Stream, and by 2100 UTC that afternoon, the National Hurricane Center initiated advisories on Tropical Storm Alberto, the first named storm to form during May in the Atlantic basin since Arthur in 2008, and the earliest tropical storm since Ana in April 2003.[2] Combined with Aletta's preseason development in the Eastern Pacific, this became the first occurrence where tropical cyclones reached tropical storm status in both the Atlantic and Eastern Pacific basins (east of the 140°W) before the official start date of their respective hurricane seasons.[3]

At 2250 UTC on May 19, a ship near Alberto reported winds of 60 mph (95 km/h), indicating the storm was stronger than previously assessed.[4] Little strengthening occurred over the next few hours, and in fact, slight weakening occurred that night as southeasterly shear and dry air entrainment began to impact the system, leaving the center exposed to the east of the circulation.[5][6] After remaining a minimal tropical storm for about 24 hours, the storm weakened to a tropical depression early on May 22 as it moved northeastward out to sea.[7] Late on May 22, the NHC discontinued advisories on Alberto after the system failed to maintain convection and dissipated; at this time the cyclone was located roughly 170 miles (270 km) south-southeast of Cape Hatteras, North Carolina.[8] While the storm was active, Alberto produced 3 to 5 ft (0.91 to 1.52 m) waves, prompting several ocean rescues.[9]

Tropical Storm Beryl

Tropical storm (SSHWS)
 
DurationMay 26 – May 30
Peak intensity70 mph (110 km/h) (1-min);
992 mbar (hPa)

On May 23, an elongated low pressure area developed over the northwestern Caribbean Sea, with disorganized thunderstorms, and began moving northeastwards.[10] The low became better-defined over the Florida Keys,[11] and the cloud pattern organized.[12] After continuing to the northeast, the system developed a well-defined circulation with associated convection, located beneath an upper-level low. Based on the observations, the National Hurricane Center initiated advisories on Subtropical Storm Beryl at 0300 UTC on May 26 when the system was located about 305 mi (490 km) east of Charleston, South Carolina.[13]

Little change in strength occurred until May 27, when Beryl transitioned into a fully tropical storm and reached its peak intensity, with winds of 70 mph (110 km/h).[14] After making landfall in Jacksonville Beach, Florida, Beryl weakened to a tropical depression as it tracked over land.[15] The storm then slowly turned to the northeast,[16] tracking over Georgia and South Carolina before becoming post-tropical on May 30.[17] Beryl would soon become an extratropical cyclone, as it accelerated to the northeast.[17] Beryl's landfall in Jacksonville Beach, Florida, was the strongest landfall in the United States for any pre-season Atlantic tropical cyclone on record.[18]

Hurricane Chris

Category 1 hurricane (SSHWS)
 
DurationJune 19 – June 22
Peak intensity75 mph (120 km/h) (1-min);
987 mbar (hPa)

On June 17, a low pressure area developed from a stalled out frontal boundary near Bermuda.[19] Atop warm sea surface temperatures and light wind shear, the low pressure gradually acquired tropical characteristics the following day,[20] and during the afternoon hours of June 19, after sustaining deep thunderstorm activity for a sufficient amount of time, the National Hurricane Center began writing advisories on Tropical Storm Chris.[21] Despite being at a high latitude over cooler water (22°C / 71.6°F), it strengthened into the first hurricane of the season on June 21.[22] After encountering cooler waters, it weakened back to a tropical storm just six hours later.[23] Early on June 22 Chris began transitioning into a post-tropical cyclone as it interacted with a larger extratropical low to its south.[24] The final advisory on Chris was issued at on June 22 after completing its post-tropical transition, as it was absorbed by a larger non-tropical low.[25]

Tropical Storm Debby

Tropical storm (SSHWS)
 
DurationJune 23 – June 27
Peak intensity60 mph (95 km/h) (1-min);
990 mbar (hPa)

A tropical disturbance developed into Tropical Storm Debby on the afternoon of June 23 in the Gulf of Mexico, becoming the earliest fourth storm on record in the Atlantic basin; this beat the previous record set by 2005's Hurricane Dennis, which formed on July 5.[26] Debby moved sluggishly throughout June 24 and into June 25, at times becoming stationary.[27] Debby did not intensify as much as originally anticipated due to high vertical wind shear caused by an upper-level low on its western side that limited convective activity atop the center of circulation.[28] At 2100 UTC June 26, Debby made landfall at Steinhatchee, Florida with winds of 40 mph (65 km/h). Shortly after landfall, Debby weakened to a tropical depression and lost most of its central convection.[29] Debby maintained tropical depression status while crossing Florida, while still being sheared from the southwest.[30] As it exited Florida during the afternoon hours of June 27, Debby was declared post-tropical due to lack of convection near its then elongated center, although it had regained tropical storm strength.[31] Over the next few days the remnants of Debby continued to move northeast until they dissipated on June 30.[32]

Hurricane Ernesto

Category 1 hurricane (SSHWS)
 
DurationAugust 1 – August 10
Peak intensity85 mph (140 km/h) (1-min);
980 mbar (hPa)

A tropical wave crossed the west coast of Africa on July 26, and after the circulation became better defined, the National Hurricane Center initiated advisories on Tropical Depression Five at 2100 UTC on August 1.[33] At the time, the depression was located about 810 mi (1305 km) east of the Lesser Antilles, moving west-northwestward due to an anticyclone to its north.[33] In the 12 hours after its formation, the system's convection became disorganized due to westerly wind shear, and the NHC remarked that the system had the potential for degeneration into a tropical wave.[34] However, a Hurricane Hunters flight on August 2 observed tropical storm force winds, and accordingly the NHC upgraded the depression to Tropical Storm Ernesto at 2100 UTC.[35] The next day, the storm moved over or very near Saint Lucia, and a station on the island reported a wind gust of 63 mph (101 km/h).[36]

By August 3, Ernesto entered the Caribbean Sea, with anticipation of further strengthening as a hurricane by the next several days.[37] Accordingly on August 4, the island of Jamaica issued a tropical storm warning on the island for possible threat of rains and winds over the next several days.[38] The next day the government of Honduras and the Cayman Islands issued a tropical storm watch for their respective territories.[39] As Tropical Storm Ernesto approached the western Caribbean on Monday morning August 6, moderate wind shear and a pocket of dry air worked its way into the system halting all intensification. Deep convection dissipated around the center of circulation and had an overall ragged appearance.[40] On August 7, Ernesto regained some deep convection around the center and had begun to reorganize and by that afternoon it became a hurricane.[41] At 0315 UTC August 8, Ernesto made landfall as a Category 1 hurricane with winds of 85 mph (140 km/h).[42] After weakening into a tropical storm and moving into the Bay Of Campeche, the storm made landfall again near Coatzacoalcos, Mexico at tropical storm status, killing 2 people because of heavy rains.[43] The system moved inland across the Isthmus of Tehuantepec on the afternoon of August 9,[44] and into southern Mexico before dissipating as a tropical cyclone on August 10.[45] The remnants of Ernesto later contributed to the development of Tropical Storm Hector in the Eastern Pacific.[46][47]

Tropical Storm Florence

Tropical storm (SSHWS)
 
DurationAugust 4 – August 6
Peak intensity60 mph (95 km/h) (1-min);
1000 mbar (hPa)

Late on August 1, a vigorous tropical wave emerged off the coast of Africa. The wave developed a mid-level spin, and on August 3, the National Hurricane Center began to monitor the wave.[48] The wave slowly organized, and on August 4, the storm became Tropical Depression Six.[49] The next day it strengthened into Tropical Storm Florence.[50] Environmental conditions were favorable at first, which allowed Florence to strengthen into a moderate tropical storm.[51] As the system progressed west-northwest, it encountered drier and more stable air, which caused Florence to weaken.[52] These unfavorable conditions finally took its toll on Florence when it weakened early on August 6 into a tropical depression, with the system almost void of thunderstorms and a vortex spinning in its center.[53] Later that day on August 6, Florence weakened into a post-tropical cyclone and the final advisory was issued by the National Hurricane Center.[54] After becoming post-tropical, the remains of Florence were still monitored by the National Hurricane Center as they continued to track west-northwestward while producing intermittent convection, although it never re-developed.[55]

Tropical Storm Helene

Tropical storm (SSHWS)
 
DurationAugust 9 – August 19
Peak intensity45 mph (75 km/h) (1-min);
1004 mbar (hPa)

The National Hurricane Center began tracking a rapidly-moving tropical wave near Cape Verde on August 6.[56] The circulation began to organize on August 7, although thunderstorm activity was still disorganized.[57] Nonetheless, convection organized enough that Tropical Depression Seven formed on August 9.[58] However, minimal strengthening occurred and the depression instead degenerated into an open tropical wave on August 11.[59] The remnants were monitored for possible redevelopment, though on August 14, the system moved inland over Central America and was no longer expected to regenerate.[60]

After emerging into the Bay of Campeche, it redeveloped on August 17, though due to intensification, it was immediately re-classified as Tropical Storm Helene.[61] Helene moved northwest and made landfall near Tampico, Mexico on the following day.[62] Later that day, the storm was downgraded to a tropical depression, before dissipating early on August 19.[63] The remnant tropical wave produced heavy rainfall in Trinidad and Tobago, causing flooding and mudslides in Diego Martin on island of Trinidad. Two fatalities occurred and two other people were listed as missing.[64] Losses in Trinidad and Tobago reportedly exceeded 109 million TT$ ($17 million USD).[65]

Hurricane Gordon

Category 2 hurricane (SSHWS)
 
DurationAugust 15 – August 20
Peak intensity110 mph (175 km/h) (1-min);
965 mbar (hPa)

A tropical wave exited the coast of western Africa and entered the Atlantic Ocean on August 10.[66] After passing over Cape Verde, it traveled in a general west-northwest direction, over colder waters, during which its development had been impeded and its shower and thunderstorm activity remained minimal.[67] As the low pressure system turned to a more northerly direction, it reentered warmer waters. The environment was favorable for cyclone genesis, and the system attained a deeper convection and better defined circulation.[68] On August 15, Tropical Depression Eight formed about 630 miles (1,000 km) east-southeast of Bermuda,[69] and strengthened to Tropical Storm Gordon in about 12 hours.[70]

Gordon turned to the east and was expected to undergo extratropical transition upon passing over the Azores, where vertical shear was expected to increase.[71] Wind shear remained relatively absent, and after developing more convection around its center, Gordon was upgraded to a hurricane on August 18.[72] After peaking as a strong Category 2 hurricane, a weakening trend then occurred. On August 20, Gordon drifted over Santa Maria Island, hours before becoming extratropical.[73] Although Gordon passed directly over the easternmost islands in the Azores, little damage took place. Several homes had broken doors and windows and streets were covered with fallen trees. Some areas temporarily lost power when the storm moved over, though electricity was restored hours later.[74] Torrential rains also triggered localized flooding.[75]

Hurricane Isaac

Category 1 hurricane (SSHWS)
 
DurationAugust 21 – September 1
Peak intensity80 mph (130 km/h) (1-min);
968 mbar (hPa)

A tropical wave crossed the west coast of Africa between August 15 and August 16.[76][77] It initially struggled to organize, but eventually developed into Tropical Depression Nine on August 21, while located well east of the Leeward Islands.[13] Twelve hours later, it was upgraded to Tropical Storm Isaac, despite being rather disorganized.[78] Further strengthening was slow however, due to dry air entering the northeast quadrantof the storm[79] as it was passing just south of Guadeloupe.[80] An eye feature developed early on August 25,[81] and winds reached 70 mph (110 km/h) before landfall on the Tiburon Peninsula of Haiti.[82] The storm became disorganized over Haiti and soon emerged into the Windward Passage.[83] However, re-strengthening did not occur because Isaac made landfall in Cuba.[84]

By early on August 26, Isaac entered the Straits of Florida and began to re-organize,[85] though dry air prevented convection from developing near the center. A subtropical ridge then curved Isaac northwestward across the Gulf of Mexico.[86] Based on data from the Hurricane Hunters, Isaac was upgraded to a hurricane at 1620 UTC on August 28.[87] Later that day, Isaac made landfall near the mouth of the Mississippi River with winds of 80 mph (130 km/h).[88] The eye moved back over water shortly thereafter[89] and drifted offshore before a second landfall in Louisiana near Port Fourchon at 0715 UTC on August 29.[90] Several hours later, Isaac weakened to a tropical storm as it slowly moved through Louisiana,[91] before being downgraded to a tropical depression late on August 30.[92] The depression continued in a generally northward direction and transitioned into an extratropical cyclone while centered over Missouri on September 1.[93]

Tropical Storm Joyce

Tropical storm (SSHWS)
 
DurationAugust 22 – August 24
Peak intensity40 mph (65 km/h) (1-min);
1006 mbar (hPa)

Early on August 20 the NHC reported that a Tropical Wave located between Africa and the Cape Verde islands was producing disorganized showers and thunderstorms.[94] Two days later it became sufficiently organized to be designated as Tropical Depression Ten, nearly 900 miles WSW of Cape Verde,[95] and on August 23 strengthened into Tropical Storm Joyce.[96] However, strong wind shear to the south of the storm's center of circulation inhibited further development; with most of the storm's convectional activity remaining displaced to the north, Joyce soon weakened to a tropical depression.[97] Joyce continued to weaken and the system fell below the threshold of a tropical depression, with its circulation no longer being closed. This prompted the NHC to issue the final advisory on Joyce at 11 am AST on August 24.[98]

Hurricane Kirk

Category 2 hurricane (SSHWS)
 
DurationAugust 28 – September 2
Peak intensity105 mph (165 km/h) (1-min);
970 mbar (hPa)

During the evening hours of August 22 the National Hurricane Center began monitoring a large tropical wave and associated, disorganized shower and thunderstorm activity.[99] Little change in organization occurred until late on August 25, when showers and thunderstorms associated with a newly-formed low pressure area increased. Wind shear increased atop the disturbance the following day however, and by 1200 UTC on August 27, the NHC had dropped the chances of tropical development down to 30%.[100] These unfavorable conditions were short-lived however, as deep convective activity once again increased over the low-level center. At 2100 UTC on August 28, the National Hurricane Center initiated advisories on newly-formed Tropical Depression Eleven.[101] At the subsequent advisory, the depression was upgraded to Tropical Storm Kirk, and the intensity forecast was increased significantly, as wind shear was not expected to be as much of an inhibitor as originally anticipated.[102] Slow intensification occurred over the following two days, and Kirk became the sixth hurricane of the 2012 Atlantic hurricane season at 1500 UTC on August 30,[103] before further intensifying into a Category 2 late that night.[104] After reaching its peak intensity with winds of 105 mph, the cyclone entered cooler waters and gradually weakened; the storm fell below hurricane status early on September 1, and became a post-tropical cyclone the next day while remaining far from land.[105]

Hurricane Leslie

Category 1 hurricane (SSHWS)
 
DurationAugust 30 – September 11
Peak intensity75 mph (120 km/h) (1-min);
968 mbar (hPa)

A tropical wave moved off the west coast of Africa on August 27 and entered the Atlantic Ocean.[106] Tracking generally westward and initially remained disorganized, though it began to develop deep convection around the center by early on August 30.[107] Later that day, the National Hurricane Center initiated advisories on Tropical Depression Twelve, which was located about 1,185 miles (1,905 km) east of the Windward Islands.[108] Due to warm sea surface temperatures,[109] the depression quickly intensified into Tropical Storm Leslie on August 30.[110] Although the storm significantly organized throughout August 30 and early on August 31,[111][112] wind shear began increasing thereafter, displacing convection from the center.[113] Despite disorganization, an eye-like feature appeared on satellite imagery early on September 1.[114] After re-organizing, Leslie was upgraded to a hurricane on September 5.[115] On September 11, Leslie made landfall over Marystown, Newfoundland and Labrador, Canada with winds of 70 mph (110 km/h) as it became extratropical.[116]

Hurricane Michael

Category 3 hurricane (SSHWS)
 
DurationSeptember 3 – September 11
Peak intensity115 mph (185 km/h) (1-min);
964 mbar (hPa)

On September 2, the National Hurricane Center noted a surface trough interacting with an upper level low northwest of the Cape Verde Islands, and began monitoring it for development.[117] It gradually became better organized and developed a surface circulation later that day.[118] On September 3, it finally developed enough organization to be declared a tropical depression,[119] strengthening to Tropical Storm Michael the next day.[120] Within its first 24 hours of tropical storm status, the system maintained little change in its strength.[121] However, the system became better organized, and strengthened enough to become classified as a hurricane on September 5.[122] Rapid intensification continued, and in two hours, Michael reached Category 2 intensity.[123] Four hours later, Michael became the first major hurricane of 2012 in the Atlantic basin.[124]

Later that day, after holding Category 3 status for 12 hours, Michael dropped to a strong Category 2 and began to slowly weaken.[125] After maintaining this intensity for over 48 hours, the system finally succumbed to high wind shear from nearby Tropical Storm Leslie and became a convectionless vortex by September 11, when it was declared a post-tropical cyclone by the National Hurricane Center.[126]

Hurricane Nadine

Category 1 hurricane (SSHWS)
 
DurationSeptember 11 – October 4
Peak intensity90 mph (150 km/h) (1-min);
978 mbar (hPa)

A large tropical wave moved off the west coast of Africa between September 7 and September 8.[127] Although dry air became a possible inhibitor for development,[128] Dvorak intensity estimates from the Satellite Analysis Branch (SAB) resulted in the National Hurricane Center initiating advisories on Tropical Depression Fourteen at 1500 UTC on September 11.[129] After an increase in deep convection, the depression was upgraded to Tropical Storm Nadine early on the following day.[130] Nadine continued to intensify while moving west-northwest and then northwest around the southwestern periphery of the subtropical ridge. However, late on September 13, moderate wind shear[131] displaced the low-level and mid-level center of the storm. However, the storm quickly re-organized and became a hurricane early on September 15.[132]

Nadine strengthened slightly further to 80 mph (130 km/h)[133] before weakening back to a tropical storm on September 17.[134] The storm continued to move eastward toward the Azores, but remained offshore. Nonetheless, Flores Island reported a wind gust of 46 mph (74 km/h).[135] After convection weakened, an upper-level low developed, and the wind field became larger than average, Nadine transitioned into a subtropical cyclone on September 21.[136] After no increase in convection, Nadine was declared to be a post-tropical cyclone early on the following day.[137] Later on September 22, thunderstorm activity blossomed near Nadine's center and persisted, leading to NHC redesignating the system a tropical storm on September 23. Nadine drifted westward thereafter, to the south of the Azores. On September 28, Nadine became a hurricane for the second time.[138] Due to wind shear on the 29th of September, Nadine weakened back into a tropical storm, but by the next advisory it restrengthened into a hurricane for the third time. It reached its peak intensity of 90 miles per hour on September 30, holding on to its strength for 18 hours until it again started to weaken due to increasing wind shear and cooler waters. Nadine weakened to a minimal tropical storm on October 3, when it briefly reentered warm waters, thus dropping its pressure. On October 4, Nadine was picked up by the jet stream and eventually merged with a non-tropical system just before midday, prompting the NHC to discontinue advisories at that time.[citation needed]

Tropical Storm Oscar

Tropical storm (SSHWS)
 
DurationOctober 3 – October 5
Peak intensity50 mph (85 km/h) (1-min);
997 mbar (hPa)

On September 30, a broad low pressure area formed a couple hundred miles west of the Cape Verde islands.[139] This low gradually became better organized as conditions were favorable for development,[140] and the NHC gave it a high chance of tropical cyclone formation (50% or more) on October 1.[141] The low developed into Tropical Depression Fifteen on October 3, with the NHC noting that the system had multiple swirls rotating around a common center. However, Fifteen was expected to strengthen only into a 45 mph tropical storm before being absorbed by a large extratropical low in 72 hours.[142]

On October 3, the cloud pattern of Fifteen morphed into a large cluster of cold-topped convection that had been steadily increasing in intensity and coverage.[143] An ASCAT scatterometer pass at 0030 UTC that day revealed several 40 mph wind barbs, and TAFB gave the system a Dvorak T-number of 2.5, equivalent to minimal tropical storm strength. On this basis, Fifteen was upgraded to Tropical Storm Oscar that day.[144] On October 4, the NHC reported that Oscar had strengthened despite hostile conditions, citing a 1300 UTC ASCAT pass that indicated that the strongest winds in Oscar had increased to 45 mph, but did not expect it to strengthen any further.[145] Late on the 4th, an ASCAT pass revealed that Oscar had strengthened a little more, to a 50 mph storm.[146] On October 5, visible satellite images and ASCAT data revealed that Oscar no longer had a closed circulation, and the convection that was left was confined to a small area and linear. On this basis, the NHC discontinued advisories on Oscar.[147]

Tropical Storm Patty

Tropical storm (SSHWS)
 
DurationOctober 11 – October 13
Peak intensity45 mph (75 km/h) (1-min);
1005 mbar (hPa)

A small area of low pressure formed in the Atlantic in early October, northeast of the Bahamas. Initially, the system slowly developed, but strong wind shear quickly prevented further intensification. After being situated in a hostile environment for about a day or so, the wind shear finally abated, allowing the system to redevelop and acquire a well-defined circulation. The low also had persistent organized deep convection, and on this basis, the NHC issued the first advisory on Tropical Depression Sixteen on the morning of October 11.[148] That afternoon, convection reformed closer to the center and subjective Dvorak estimates from the TAFB and the SAB increased to 45 knots. However, the NHC noted that those estimates seemed too high and opted to use an ASCAT pass that showed maximum winds of 35 mph from the night before to "conservatively" set the initial intensity at 40 mph.[149] Patty strengthened very little over the next few hours, and reached its peak intensity of 45 mph late October 11. Later the next day, Patty weakened to a tropical depression due to strong wind shear from the west. Patty persisted as a tropical depression, with a deep burst of convection developing late on the 12th,[150] but succumbed to strong southwesterly wind shear the next day, as the circulation became elongated.[151] The last advisory on Patty, issued on the morning of the 13th, noted that the circulation had become highly elongated and no longer closed, and that it did not meet the qualifications of a tropical cyclone.[152]

Hurricane Rafael

Category 1 hurricane (SSHWS)
 
DurationOctober 12 – October 17
Peak intensity90 mph (150 km/h) (1-min);
969 mbar (hPa)

A tropical wave exited the coast of Africa on October 5.[153] On October 8, the NHC first monitored a tropical wave about halfway between Cape Verde and the coast of South America, which had a weak low pressure area and elongated convection.[154] The thunderstorms gradually became more concentrated,[155] and the system became better organized.[156] By October 10, the area was producing tropical storm-force winds in its northern periphery.[157] Early on October 12, the system crossed into the eastern Caribbean Sea, passing near Saint Lucia.[158] Later that day, a Hurricane Hunters flight confirmed a closed circulation, which prompted the NHC to initiate advisories on Tropical Storm Rafael about 125 mi (200 km) west-southwest of Dominica. At the time, the deepest convection was located to the east and southeast of the center, due to southwesterly wind shear from an upper-level low near Puerto Rico. A weakness in the subtropical ridge allowed Rafael to track north-northwestward, and conditions were expected to favor further intensification.[159] On the morning of October 13, Rafael was observed to be moving north-westward followed by a slight left turn caused by a rebuilding mid–level ridge. On October 15, Rafael strengthened into a Category 1 hurricane with winds of 75 knots (85 mph, 140 km/h) as it was moving northeast.[160] Rafael's center was found to be relocated which resulted in a track proceeding farther to the east. Rafael slowly intensified further, and reached its peak winds of 90 mph. Soon after, it began to weaken very slowly as it entered an environment of very strong vertical wind shear and cooler sea surface temperatures. During the afternoon hours of October 17, Rafael transitioned into a extratropical cyclone, but remained powerful.[citation needed]

Tropical Storm Sandy

Tropical Storm Sandy
Current storm status
Tropical storm (1-min mean)
Forecast map
As of:5 p.m. EDT (2100 UTC) October 22
Location:12°30′N 78°30′W / 12.5°N 78.5°W / 12.5; -78.5 (Tropical Storm Sandy) ± 50 nm
About 395 mi (640 km) SSW of Kingston, Jamaica
Sustained winds:35 knots (40 mph; 65 km/h) (1-min mean)
gusting to 45 knots (50 mph; 85 km/h)
Pressure:999 mbar (hPa; 29.5 inHg)
Movement:Nearly stationary
See more detailed information.

Current storm information

As of 5 p.m. EDT (2100 UTC) October 22, Tropical Storm Sandy is located within 50 nautical miles of 12°30′N 78°30′W / 12.5°N 78.5°W / 12.5; -78.5 (Sandy), about 395 mi (640 km) south-southwest of Kingston, Jamaica. Maximum sustained winds are 35 knots (40 mph, 65 km/h), with stronger gusts. Minimum central pressure is 999 mbar (hPa; 29.50 InHg), and the system is nearly stationary. Tropical storm force winds extend outward up to 70 miles (110 km) from the center of Sandy.

For latest official information see:

Watches and warnings

Template:HurricaneWarningsTable

Tropical Depression Nineteen

Tropical Depression Nineteen
Current storm status
Tropical depression (1-min mean)
Forecast map
As of:5 p.m. AST (2100 UTC) October 22
Location:22°18′N 51°42′W / 22.3°N 51.7°W / 22.3; -51.7 (Tropical Depression Nineteen) ± 30 nm
About 750 mi (1205 km) ENE of the Leeward Islands
Sustained winds:30 knots (35 mph; 55 km/h) (1-min mean)
gusting to 40 knots (45 mph; 75 km/h)
Pressure:1006 mbar (hPa; 29.71 inHg)
Movement:N at 6 kt (7 mph; 11 km/h)
See more detailed information.

Tropical Depression Nineteen formed on October 22.[citation needed]

Current storm information

As of 5 p.m. AST (2100 UTC) October 22, Tropical Depression Nineteen is located within 30 nautical miles of 22°18′N 51°42′W / 22.3°N 51.7°W / 22.3; -51.7 (Nineteen), about 750 mi (1205 km) east-northeast of the Leeward Islands. Maximum sustained winds are 30 knots (35 mph, 55 km/h), with stronger gusts. Minimum central pressure is 1006 mbar (hPa; 29.71 InHg), and the system is moving north at 6 kt (7 mph, 11 km/h).


For latest official information see:

  1. ^ Michael Brennan; David Cangialosi (May 19, 2012). "Special Tropical Weather Outlook". National Hurricane Center. Retrieved May 20, 2012.
  2. ^ Michael Brennan (May 19, 2012). "Tropical Storm Alberto Discussion Number 1". National Hurricane Center. Retrieved May 20, 2012.
  3. ^ Dominic Brown (May 20, 2012). "First Tropical Storm of Season Forms, Could Impact Eastern [[North Carolina]]". WCTI-TV. Retrieved May 20, 2012. {{cite web}}: URL–wikilink conflict (help)
  4. ^ Eric Blake; James Franklin (May 19, 2012). "Tropical Storm Alberto Tropical Cyclone Update". National Hurricane Center. Retrieved May 20, 2012.
  5. ^ Eric Blake; James Franklin (May 20, 2012). "Tropical Storm Alberto Discussion Number 2". National Hurricane Center. Retrieved May 20, 2012.
  6. ^ David Cangialosi; Daniel Brown (May 20, 2012). "Tropical Storm Alberto Discussion Number 3". National Hurricane Center. Retrieved May 20, 2012.
  7. ^ Stacy Stewart (May 22, 2012). "Tropical Storm Alberto Discussion Number 10". National Hurricane Center. Retrieved May 22, 2012.
  8. ^ Richard Pasch (May 22, 2012). "Tropical Storm Alberto Discussion Number 12". National Hurricane Center. Retrieved May 22, 2012.
  9. ^ Al Sandrik (May 22, 2012). Post Tropical Cyclone Report... Tropical Depression Alberto (Report). Jacksonville, Florida National Weather Service. Retrieved May 30, 2012.
  10. ^ Robbie Berg; Richard Pasch (May 23, 2012). "Graphical Tropical Weather Outlook". National Hurricane Center. Retrieved May 23, 2012.
  11. ^ Michael Brennan; James Franklin (May 24, 2012). "Special Tropical Weather Outlook". National Hurricane Center. Retrieved May 25, 2012.
  12. ^ Todd Kimberlain; Stacy Stewart (May 24, 2012). "Special Tropical Weather Outlook". National Hurricane Center. Retrieved May 25, 2012.
  13. ^ a b Todd Kimberlain (May 26, 2012). "Subtropical Storm Beryl Discussion Number 1". National Hurricane Center. Retrieved May 26, 2012. Cite error: The named reference "disc1" was defined multiple times with different content (see the help page).
  14. ^ Todd Kimberlain, Lixion Avila and. "Tropical Storm Beryl Discussion #9". National Hurricane Center. Retrieved 6 August 2012.
  15. ^ Avila, Lixion; Cangialosi, John (May 28, 2012). Tropical Depression Beryl Discussion Number 11 (Report). National Hurricane Center. Retrieved August 10, 2012.
  16. ^ Franklin, James (May 29, 2012). "Tropical Depression Beryl Discussion Number 14". National Hurricane Center. Retrieved August 10, 2012.
  17. ^ a b John Cangialosi, James Franklin /. "Tropical Storm Beryl Discussion #20". National Hurricane Center. Retrieved 6 August 2012.
  18. ^ Cite error: The named reference 61two was invoked but never defined (see the help page).
  19. ^ Brown, Daniel (June 17, 2012). Tropical Weather Outlook (Report). National Hurricane Center. Retrieved August 10, 2012.
  20. ^ Landsea, Christopher (June 18, 2012). Tropical Weather Outlook (Report). National Hurricane Center. Retrieved August 10, 2012.
  21. ^ Daniel Brown (June 19, 2012). "Tropical Storm Chris Forecast Discussion Number 1". National Hurricane Center. Retrieved June 19, 2012.
  22. ^ Roberts, Dave (June 21, 2012). Hurricane Chris Discussion Number 9 (Report). National Hurricane Center. Retrieved August 10, 2012.
  23. ^ Roberts, Dave (June 21, 2012). Tropical Storm Chris Discussion Number 9 (Report). National Hurricane Center. Retrieved August 10, 2012.
  24. ^ Cangialosi, John (June 22, 2012). Tropical Storm Chris Discussion Number 11 (Report). National Hurricane Center. Retrieved August 10, 2012.
  25. ^ Berg, Robbie. "Chris Discussion #12". National Hurricane Center. Retrieved 6 August 2012.
  26. ^ Todd Kimberlain (June 27, 2012). "Post-Tropical Cyclone Debby Discussion Number 18". National Hurricane Center. Retrieved June 27, 2012.
  27. ^ Stewart, Stacy. "Debby Discussion #2". National Hurricane Center. Retrieved 6 August 2012.
  28. ^ Stewart, Stacy. "Debby Discussion #11". National Hurricane Center. Retrieved 6 August 2012.
  29. ^ Beven, Jack. "Debby Discussion #15". National Hurricane Center. Retrieved 6 August 2012.
  30. ^ Kimberlain, Todd. "Debby Discussion #17". National Hurricane Center. Retrieved 7 August 2012.
  31. ^ Kimberlain, Todd. "Debby Discussion #18". National Hurricane Center. Retrieved 6 August 2012.
  32. ^ "Tropical Storm Debby ATCF File". National Hurricane Center. Retrieved 9 August 2012.
  33. ^ a b Eric Blake, Richard Pasch and. "Ernesto Discussion #1". National Hurricane Center. Retrieved 6 August 2012.
  34. ^ Todd Kimberlain, Lixion Avila and. "Ernesto Discussion #3". National Hurricane Center. Retrieved 6 August 2012.
  35. ^ Pasch, Richard. "Ernesto Discussion #5". National Hurricane Center. Retrieved 6 August 2012.
  36. ^ Avila, Lixion. "Ernesto Public Advisory 7a". National Hurricane Center. Retrieved 6 August 2012.
  37. ^ Beven, Jack. "Ernesto Discussion #10". National Hurricane Center. Retrieved 6 August 2012.
  38. ^ Avila, Lixion. "Ernesto Update 8AM ADT 8-4-12". National Hurricane Center. Retrieved 6 August 2012.
  39. ^ Brennan, Michael. "Ernesto Public Advisory #15". National Hurricane Center. Retrieved 6 August 2012.
  40. ^ Dave Roberts, Richard Pasch and. "Ernesto Discussion #16". National Hurricane Center. Retrieved 6 August 2012.
  41. ^ Pasch, Eric. "Ernesto Discussion #20". National Hurricane Center. Retrieved 6 August 2012.
  42. ^ "Ernesto Discussion #20". National Hurricane Center. Retrieved 8 August 2012.
  43. ^ Hernandez, Miguel (August 10, 2012). "Tropical Storm Ernesto kills 2 in Mexico". USA Today. Retrieved 28 August 2012.
  44. ^ Avila, Lixion (August 9, 2012). Tropical Storm Ernesto Advisory Number 34 (Report). National Hurricane Center. Retrieved August 10, 2012.
  45. ^ Avila, Lixion (August 10, 2012). Tropical Depression Ernesto Advisory Number 37 (Report). National Hurricane Center. Retrieved August 10, 2012.
  46. ^ Lixion A. Avila (August 11, 2012). "Tropical Depression Eight-E Special Discussion Number One". National Hurricane Center. Retrieved August 15, 2012.
  47. ^ Eric S. Blake (August 11, 2012). "Tropical Storm Hector Public Advisory Three". National Hurricane Center. Retrieved August 15, 2012.
  48. ^ Kimberlain, Todd. "200 AM EDT 8-3-12 Graphical Tropical Weather Outlook". National Hurricane Center. Retrieved 6 August 2012.
  49. ^ Landsea, Christopher. "Florence Discussion #1". National Hurricane Center. Retrieved 6 August 2012.
  50. ^ Blake, Eric. "Florence Discussion #3". National Hurricane Center. Retrieved 6 August 2012.
  51. ^ Kimberlain, Todd. "Tropical Storm Florence Discussion 5". National Hurricane Center. Retrieved 6 August 2012.
  52. ^ Kimberlain, Todd. "Florence Discussion #9". National Hurricane Center. Retrieved 6 August 2012.
  53. ^ Cangialosi, John. "Tropical Depression Florence Discussion 10". National Hurricane Center. Retrieved 6 August 2012.
  54. ^ Roberts, Dave. "US Navy Hurricane Specialist". National Hurricane Center. Retrieved 12-8-6. {{cite web}}: Check date values in: |accessdate= (help)
  55. ^ Beven, Jack. "Atlantic Tropical Weather Outlook 8AM EDT 8-7-12". National Hurricane Center. Retrieved 7 August 2012.
  56. ^ Stewart, Stacy (August 6, 2012). Tropical Weather Outlook (Report). National Hurricane Center. Retrieved August 11, 2012.
  57. ^ Beven, Jack (August 7, 2012). Tropical Weather Outlook (Report). National Hurricane Center. Retrieved August 11, 2012.
  58. ^ Pasch, Richard (August 9, 2012). Tropical Depression Seven Discussion Number 1 (Report). National Hurricane Center. Retrieved August 11, 2012.
  59. ^ Berg, Robbie; Avila, Lixion (August 11, 2012). Remnants of Seven Discussion Number 8 (Report). National Hurricane Center. Retrieved August 11, 2012.
  60. ^ Brown, Daniel (August 14, 2012). Tropical Weather Outlook for the North Atlantic, Caribbean Sea and the Gulf of Mexico (Report). National Hurricane Center. Retrieved August 15, 2012.
  61. ^ Brennan, Michael (August 17, 2012). Helene Special Advisory #9 (Report). Retrieved August 19, 2012.
  62. ^ Berg, Robbie (August 18, 2012). Helene Advisory #12 (Report). Retrieved August 19, 2012.
  63. ^ Avila, Lixion (August 18, 2012). Helene Advisory #14 (Report). Retrieved August 19, 2012.
  64. ^ "2 dead, 2 missing in Trinidad as tropical wave churns in eastern Caribbean". The Washington Post. Associated Press. August 11, 2012. Retrieved August 12, 2012.
  65. ^ Renuka Singh (August 14, 2012). "$109m And Rising". Trinidad Express Newspapers. Retrieved August 15, 2012.
  66. ^ Berg, Robbie (August 10, 2012). Graphical Tropical Weather Outlook (Report). National Hurricane Center. Retrieved August 22, 2012.
  67. ^ Stewart, Stacy (August 13, 2012). Graphical Tropical Weather Outlook (Report). National Hurricane Center. Retrieved August 22, 2012.
  68. ^ Stewart, Stacy (August 14, 2012). Graphical Tropical Weather Outlook (Report). National Hurricane Center. Retrieved August 22, 2012.
  69. ^ Stewart, Stacy (August 15, 2012). Tropical Depression Eight Discussion Number 1 (Report). National Hurricane Center. Retrieved August 22, 2012.
  70. ^ Blake, Eric (August 15, 2012). Tropical Storm Gordon Discussion Number 3 (Report). National Hurricane Center. Retrieved August 22, 2012.
  71. ^ Roberts, Dave (August 15, 2012). Tropical Storm Gordon Discussion Number 10 (Report). National Hurricane Center. Retrieved August 22, 2012.
  72. ^ Beven, Jack (August 18, 2012). Hurricane Gordon Discussion Number 11 (Report). National Hurricane Center. Retrieved August 22, 2012.
  73. ^ Stacy Stewart; John Cangialosi (August 20, 2012). "Hurricane Gordon Update Statement". Retrieved August 20, 2012.
  74. ^ Andrei Khalip (August 20, 2012). "Hurricane Gordon causes minor damage in Azores, losing intensity". Lisbon, Portugal: Reuters. Retrieved August 20, 2012.
  75. ^ "Hurricane Gordon passes Portugal's Azores Islands, causes little damage as it weakens". Associated Press. Lisbon, Portugal: The Washington Post. August 20, 2012. Retrieved August 20, 2012.
  76. ^ Todd Kimberlain and John Zelinsky (August 16, 2012). "Tropical Weather Outlook". National Hurricane Center. Retrieved August 22, 2012.
  77. ^ Eric Blake (August 17, 2012). "Tropical Weather Outlook". National Hurricane Center. Retrieved August 22, 2012.
  78. ^ Jack Beven (August 21, 2012). Tropical Storm Isaac Discussion Number 3 (Report). National Hurricane Center. Retrieved August 23, 2012.
  79. ^ Jack Beven (August 22, 2012). Tropical Storm Isaac Discussion Number 6 (Report). National Hurricane Center. Retrieved August 23, 2012.
  80. ^ Jack Beven (August 22, 2012). Tropical Storm Isaac Discussion Number 7 (Report). National Hurricane Center. Retrieved August 23, 2012.
  81. ^ Jack Beven (August 25, 2012). Tropical Storm Isaac Discussion Number 16 (Report). National Hurricane Center. Retrieved August 26, 2012.
  82. ^ Michael Brennan (August 25, 2012). Tropical Storm Isaac Discussion Number 17 (Report). National Hurricane Center. Retrieved August 26, 2012.
  83. ^ Jack Beven (August 25, 2012). Tropical Storm Isaac Discussion Number 18 (Report). National Hurricane Center. Retrieved August 26, 2012.
  84. ^ Jack Beven (August 25, 2012). Tropical Storm Isaac Discussion Number 19 (Report). National Hurricane Center. Retrieved August 26, 2012.
  85. ^ Michael Brennan (August 26, 2012). Tropical Storm Isaac Discussion Number 21 (Report). National Hurricane Center. Retrieved August 26, 2012.
  86. ^ Stacy Stewart (August 27, 2012). Tropical Storm Isaac Discussion Number 26 (Report). National Hurricane Center. Retrieved August 28, 2012.
  87. ^ Stacy Stewart; Jack Beven (August 28, 2012). Hurricane Isaac Tropical Cyclone Update (Report). National Hurricane Center. Retrieved August 28, 2012.
  88. ^ Daniel Brown; Michael Brennan (August 29, 2012). Hurricane Isaac Tropical Cyclone Position Estimate (Report). National Hurricane Center. Retrieved August 29, 2012.
  89. ^ Todd Kimberlain; Richard Pasch (August 29, 2012). Hurricane Isaac Tropical Cyclone Position Estimate (Report). National Hurricane Center. Retrieved August 29, 2012.
  90. ^ Richard Pasch; John Roberts (August 29, 2012). Hurricane Isaac Tropical Cyclone Position Estimate (Report). National Hurricane Center. Retrieved August 29, 2012.
  91. ^ Stacy Stewart (August 29, 2012). Tropical Storm Isaac Intermediate Advisory Number 34B (Report). National Hurricane Center. Retrieved August 30, 2012.
  92. ^ Stacy Stewart (August 30, 2012). Tropical Storm Isaac Public Advisory Number 39 (Report). National Hurricane Center. Retrieved August 30, 2012.
  93. ^ "Post-Tropical Cyclone Isaac Advisory Number 46". Hydrometeorological Prediction Center. September 1, 2012. Retrieved September 23, 2012.
  94. ^ Blake, Eric (August 22, 2012). Tropical Weather Outlook (Report). National Hurricane Center. Retrieved August 22, 2012.
  95. ^ Stewart, Stacy (August 22, 2012). Tropical Depression Ten Discussion Number 1 (Report). National Hurricane Center. Retrieved August 22, 2012.
  96. ^ Kimberlain, Todd (August 23, 2012). Tropical Storm Joyce Discussion Number 5 (Report). National Hurricane Center. Retrieved August 23, 2012.
  97. ^ Blake, Eric (August 24, 2012). Tropical Depression Joyce Discussion Number 7 (Report). National Hurricane Center. Retrieved August 24, 2012.
  98. ^ Tropical Storm Joyce Discussion Number 9 (Report). National Hurricane Center. August 24, 2012. Retrieved August 25, 2012. {{cite report}}: |first= missing |last= (help)
  99. ^ Berg, Robbie (August 22, 2012). "Graphical Tropical Weather Outlook". National Hurricane Center. Retrieved September 22, 2012.
  100. ^ Cangialosi, John (August 27, 2012). "Graphical Tropical Weather Outlook". National Hurricane Center. Retrieved September 15, 2012.
  101. ^ Brennan, Michael (August 28, 2012). "Tropical Depression Eleven Public Advisory Number 1". National Hurricane Center. {{cite web}}: Text "September 15, 2012" ignored (help)
  102. ^ John Cangialosi; Todd Kimberlain (August 28, 2012). "Tropical Storm Kirk Discussion Number 2". National Hurricane Center. Retrieved September 15, 2012.
  103. ^ Stewart, Stacy (August 30, 2012). "Hurricane Kirk Public Advisory Number 8". National Hurricane Center. Retrieved September 15, 2012.
  104. ^ Kimberlain, Todd (August 30, 2012). "Hurricane Kirk Public Advisory Number 10". National Hurricane Center. Retrieved September 15, 2012.
  105. ^ Cangialosi, John (September 2, 2012). "Post-Tropical Cyclone Kirk Public Advisory Number 21". National Hurricane Center. Retrieved September 15, 2012.
  106. ^ Todd Kimberlain (August 27, 2012). "Tropical Weather Outlook". National Hurricane Center. National Oceanic and Atmospheric Administration. Retrieved September 6, 2012.
  107. ^ Daniel Brown (August 29, 2012). "Tropical Weather Outlook". National Hurricane Center. National Oceanic and Atmospheric Administration. Retrieved September 6, 2012.
  108. ^ Eric Blake (August 30, 2012). "Tropical Depression Twelve Public Advisory One". National Hurricane Center. National Oceanic and Atmospheric Administration. Retrieved September 6, 2012.
  109. ^ Eric Blake (August 30, 2012). "Tropical Depression Twelve Discussion One". National Hurricane Center. National Oceanic and Atmospheric Administration. Retrieved September 6, 2012.
  110. ^ Eric Blake (August 30, 2012). "Tropical Storm Leslie Tropical Cyclone Update". National Hurricane Center. National Oceanic and Atmospheric Administration. Retrieved September 6, 2012.
  111. ^ Eric Blake (August 30, 2012). "Tropical Storm Leslie Discussion Two". National Hurricane Center. National Oceanic and Atmospheric Administration. Retrieved September 6, 2012.
  112. ^ Robbie Berg (August 31, 2012). "Tropical Storm Leslie Discussion Four". National Hurricane Center. National Oceanic and Atmospheric Administration. Retrieved September 6, 2012.
  113. ^ Eric Blake (August 31, 2012). "Tropical Storm Leslie Discussion Five". National Hurricane Center. National Oceanic and Atmospheric Administration. Retrieved September 6, 2012.
  114. ^ Robbie Berg (September 1, 2012). "Tropical Storm Leslie Discussion Eight". National Hurricane Center. National Oceanic and Atmospheric Administration. Retrieved September 6, 2012.
  115. ^ Stewart. "Hurricane LESLIE Update Statement". National Hurricane Center. Retrieved 5 September 2012.
  116. ^ Avila, Lixion (September 11, 2012). "Post-Tropical Cyclone Leslie Public Advisory Number 49". National Hurricane Center. Retrieved September 15, 2012.
  117. ^ Stacy Stewart (September 2, 2012). "Graphical Tropical Weather Outlook". National Hurricane Center. Retrieved September 6, 2012.
  118. ^ Daniel Brown (September 2, 2012). "Graphical Tropical Weather Outlook". National Hurricane Center. Retrieved September 6, 2012.
  119. ^ Daniel Brown; John Cangialosi (September 3, 2012). "Tropical Depression Thirteen Public Advisory Number 1". Retrieved September 16, 2012.
  120. ^ Lixion Avila (September 4, 2012). "Tropical Storm Michael Public Advisory Number 4". National Hurricane Center. Retrieved September 16, 2012.
  121. ^ Richard Pasch (September 4, 2012). "Tropical Storm Michael Public Advisory Number 6". National Hurricane Center. Retrieved September 16, 2012.
  122. ^ Richard Pasch (September 5, 2012). "Hurricane Michael Public Advisory Number 11". National Hurricane Center. Retrieved September 16, 2012.
  123. ^ Eric Blake; Michael Brennan (September 6, 2012). "Hurricane Michael Special Public Advisory Number 12". National Hurricane Center. Retrieved September 16, 2012.
  124. ^ "Hurricane MICHAEL". National Hurricane Center. Retrieved 16 September 2012.
  125. ^ Blake, Eric. "Michael Discussion #13". National Hurricane Center. Retrieved 6 September 2012.
  126. ^ Avila, Lixion (September 11, 2012). "Post-Tropical Cyclone Michael". National Hurricane Center. Retrieved September 15, 2012.
  127. ^ Berg, Robbie (September 7, 2012). "Graphical Tropical Weather Outlook". National Hurricane Center. Retrieved September 14, 2012.
  128. ^ "Graphical Tropical Weather Outlook". National Hurricane Center. 10 September 2012. Retrieved 15 September 2012.
  129. ^ Berg, Robbie (September 11, 2012). "Tropical Depression Fourteen Discussion Number 1". National Hurricane Center. Retrieved September 14, 2012.
  130. ^ Stewart, Stacy (September 12, 2012). "Tropical Storm Nadine Discussion Number 3". National Hurricane Center. Retrieved September 25, 2012.
  131. ^ http://www.nhc.noaa.gov/archive/2012/al14/al142012.discus.011.shtml?
  132. ^ Brennan, Michael (September 14, 2012). "Hurricane Nadine Discussion Number 15". National Hurricane Center. Retrieved September 24, 2012.
  133. ^ Berg, Robbie (September 15, 2012). "Hurricane Nadine Discussion Number 17". National Hurricane Center. Retrieved September 24, 2012.
  134. ^ Brown, Daniel (September 17, 2012). "Tropical Storm Nadine Discussion Number 23". National Hurricane Center. Retrieved September 25, 2012.
  135. ^ "Tropical Storm Nadine Advisory Number 37A". Retrieved 20 September 2012.
  136. ^ Blake, Eric (September 21, 2012). "Subtropical Storm Nadine Discussion Number 42". National Hurricane Center. Retrieved September 25, 2012.
  137. ^ Beven, Jack (September 21, 2012). "Post-Tropical Cyclone Nadine Discussion Number 43". National Hurricane Center. Retrieved September 25, 2012.
  138. ^ Jack Beven (September 28, 2012). "Hurricane Nadine Public Advisory Number 64". National Hurricane Center. Retrieved September 28, 2012.
  139. ^ Brown, Daniel. "Graphical Tropical Weather Outlook". National Hurricane Center. Retrieved 4 October 2012.
  140. ^ Cangialosi, John. "Graphical Tropical Weather Outlook". National Hurricane Center. Retrieved 4 October 2012.
  141. ^ Stewart, Stacy. "Graphical Tropical Weather Outlook". National Hurricane Center. Retrieved 4 October 2012.
  142. ^ Berg, Robbie. "Tropical Depression Fifteen Discussion Number 1". National Hurricane Center. Retrieved 4 October 2012.
  143. ^ Kimberlain, Todd. "Tropical Storm Oscar Discussion Number 3". National Hurricane Center. Retrieved 4 October 2012.
  144. ^ Kimberlain, Todd. "Tropical Storm Oscar Discussion Number 3". National Hurricane Center. Retrieved 4 October 2012.
  145. ^ Berg, Robbie. "Tropical Storm Oscar Discussion Number 5". National Hurricane Center. Retrieved 4 October 2012.
  146. ^ Blake, Eric. "Tropical Storm Oscar Discussion Number 7". National Hurricane Center. Retrieved 5 October 2012.
  147. ^ Avila, Lixion. "Remnants of Oscar Discussion Number 9". National Hurricane Center. Retrieved 5 October 2012.
  148. ^ Brennan, Michael. "Tropical Depression Sixteen Discussion Number 1". National Hurricane Center. Retrieved 11 October 2012.
  149. ^ Blake, Eric. "Tropical Storm Patty Discussion Number 2". National Hurricane Center. Retrieved 11 October 2012.
  150. ^ Roberts, Dave. "Tropical Depression Patty Discussion Number 7". National Hurricane Center. Retrieved 13 October 2012.
  151. ^ Avila, Lixion. "Tropical Depression Patty Discussion Number 8". National Hurricane Center. Retrieved 13 October 2012.
  152. ^ Cangialosi, John. "Remnants Of Patty Discussion Number 9". National Hurricane Center. Retrieved 13 October 2012.
  153. ^ Mike Formosa (October 5, 2012). Tropical Weather Discussion (Report). National Hurricane Center. Retrieved October 12, 2012.
  154. ^ Robbie Berg (October 8, 2012). Tropical Weather Outlook (TXT) (Report). National Hurricane Center. Retrieved October 12, 2012.
  155. ^ Todd Kimberlain (October 9, 2012). Tropical Weather Outlook (TXT) (Report). National Hurricane Center. Retrieved October 12, 2012.
  156. ^ John Cangialosi (October 10, 2012). Tropical Weather Outlook (TXT) (Report). National Hurricane Center. Retrieved October 12, 2012.
  157. ^ Stacy Stewart (October 10, 2012). Tropical Weather Outlook (TXT) (Report). National Hurricane Center. Retrieved October 12, 2012.
  158. ^ Eric Blake (October 12, 2012). Tropical Weather Outlook (TXT) (Report). National Hurricane Center. Retrieved October 12, 2012.
  159. ^ Michael Brennan; Jack Beven (October 12, 2012). Tropical Storm Rafael Special Discussion Number 1 (Report). National Hurricane Center. Retrieved October 12, 2012.
  160. ^ Brennan, Brennan (October 13, 2012). Tropical Storm Rafael Discussion Number 4 (Report). National Hurricane Center. Retrieved October 13, 2012.. {{cite report}}: Check date values in: |accessdate= (help)