South Atlantic tropical cyclone: Difference between revisions
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==Theories concerning infrequency of occurrence== |
==Theories concerning infrequency of occurrence== |
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Until April 1991 it was thought that tropical cyclones did not develop within the South Atlantic.<ref name="GP March 2004">{{cite web|title=Monthly Tropical Cyclone Summary March 2004|accessdate=February 7, 2015|url=http://australiasevereweather.com/cyclones/2004/summ0403.htm|archiveurl=http://www.webcitation.org/6W9TGRpqN|author=Padgett, Gary|archivedate=February 7, 2015|deadurl=no}}</ref> Very strong vertical wind shear in the [[troposphere]] is considered a deterrent.<ref name="TC FAQ G6">{{cite book|author=Landsea, Christopher W|date=July 13, 2005|title=Tropical Cyclone Frequently Asked Question|chapter=Subject: Tropical Cyclone Names: G6) Why doesn't the South Atlantic Ocean experience tropical cyclones?|publisher=United States National Oceanic and Atmospheric Administration's Hurricane Research Division|accessdate=February 7, 2015|url=http://www.aoml.noaa.gov/hrd/tcfaq/G6.html|archiveurl=http://www.webcitation.org/6WAsf5xJD|archivedate=February 7, 2015|deadurl=no}}</ref> The [[Intertropical Convergence Zone]] drops one to two degrees south of the equator,<ref>{{cite book|title=Atlantic Hurricanes|author1=Gordon E. Dunn |author2=Banner I. Miller |lastauthoramp=yes |publisher=[[Louisiana State University Press]]|date=1960|ASIN=B0006BM85S|page=33}}</ref> not far enough from the equator for the [[Coriolis force]] to aid development. Water temperatures in the tropics of the southern Atlantic are cooler than those in the tropical north Atlantic.<ref name="AOML FAQ A15">{{cite web|author=Atlantic Oceanographic and Meteorological Laboratory, Hurricane Research Division|title=Frequently Asked Questions: How do tropical cyclones form?|publisher=[[National Oceanic and Atmospheric Administration]]|accessdate=July 26, 2006|url=http://www.aoml.noaa.gov/hrd/tcfaq/A15.html}}</ref> |
Until April 1991 it was thought that tropical cyclones did not develop within the South Atlantic.<ref name="GP March 2004">{{cite web|title=Monthly Tropical Cyclone Summary March 2004 |accessdate=February 7, 2015 |url=http://australiasevereweather.com/cyclones/2004/summ0403.htm |archiveurl=http://www.webcitation.org/6W9TGRpqN?url=http://www.australiasevereweather.com/cyclones/2004/summ0403.htm |author=Padgett, Gary |archivedate=February 7, 2015 |deadurl=no |df= }}</ref> Very strong vertical wind shear in the [[troposphere]] is considered a deterrent.<ref name="TC FAQ G6">{{cite book|author=Landsea, Christopher W |date=July 13, 2005 |title=Tropical Cyclone Frequently Asked Question |chapter=Subject: Tropical Cyclone Names: G6) Why doesn't the South Atlantic Ocean experience tropical cyclones? |publisher=United States National Oceanic and Atmospheric Administration's Hurricane Research Division |accessdate=February 7, 2015 |url=http://www.aoml.noaa.gov/hrd/tcfaq/G6.html |archiveurl=http://www.webcitation.org/6WAsf5xJD?url=http://www.aoml.noaa.gov/hrd/tcfaq/G6.html |archivedate=February 7, 2015 |deadurl=no |df= }}</ref> The [[Intertropical Convergence Zone]] drops one to two degrees south of the equator,<ref>{{cite book|title=Atlantic Hurricanes|author1=Gordon E. Dunn |author2=Banner I. Miller |lastauthoramp=yes |publisher=[[Louisiana State University Press]]|date=1960|ASIN=B0006BM85S|page=33}}</ref> not far enough from the equator for the [[Coriolis force]] to aid development. Water temperatures in the tropics of the southern Atlantic are cooler than those in the tropical north Atlantic.<ref name="AOML FAQ A15">{{cite web|author=Atlantic Oceanographic and Meteorological Laboratory, Hurricane Research Division|title=Frequently Asked Questions: How do tropical cyclones form?|publisher=[[National Oceanic and Atmospheric Administration]]|accessdate=July 26, 2006|url=http://www.aoml.noaa.gov/hrd/tcfaq/A15.html}}</ref> |
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During April 1991, these assertions were proven false when the United States [[National Hurricane Center]] reported that a tropical cyclone had developed over the Eastern Atlantic.<ref name="GP March 2004"/><ref name="NHC">{{cite report|type=Diagnostic Report of the National Hurricane Center: June and July 1991|title=II. Tropical cyclone activity in the Atlantic Basin: A. Overview|author=National Hurricane Center|editor1=McAdie, Colin J|url=http://hdl.handle.net/2027/uiug.30112005414658|publisher=National Oceanic and Atmospheric Administration|accessdate=May 12, 2013|pages=10–14|year=1991|editor2=Rappaport, Edward N}}</ref> In subsequent years, a few systems were suspected to have the characteristics needed to be classified as a tropical cyclone including in March 1994 and January 2004.<ref name="GP January 2004">{{cite web|title=Monthly Tropical Cyclone Summary January 2004|accessdate=February 7, 2015|author=Padgett, Gary|url=http://australiasevereweather.com/cyclones/2004/summ0401.htm|archiveurl=http://www.webcitation.org/6W9TGRpqN|archivedate=February 7, 2015|deadurl=no}}</ref><ref name="IWTCVI">{{cite conference|publisher=World Meteorological Organization|title=Topic 2a: The Catarina Phenomenon|url=http://severe.worldweather.org/iwtc/document/Topic_2a_Pedro_Silva_Dias.pdf|year=2006|conference-url=http://severe.worldweather.org/iwtc/|conference=The Sixth WMO International Workshop on Tropical Cyclones (IWTC-VI)|archiveurl=http://www.webcitation.org/6WAYJ4fTq|archivedate=February 7, 2015|location=San José, Costa Rica|pages=329–360|format=PDF|accessdate=February 7, 2015}}</ref> During March 2004, an [[extratropical cyclone]] formally transitioned into a tropical cyclone and made landfall on Brazil, after becoming a Category 2 hurricane on the [[Saffir-Simpson hurricane wind scale]]. While the system was threatening the Brazilian state of [[Santa Catarina (state)|Santa Catarina]], a newspaper used the headline "Furacão Catarina," which was originally presumed to mean "furacão (hurricane) threatening (Santa) Catarina (the state)".<ref name="GP March 2004"/> After international presses started monitoring the system, "Hurricane Catarina" has formally been adopted. |
During April 1991, these assertions were proven false when the United States [[National Hurricane Center]] reported that a tropical cyclone had developed over the Eastern Atlantic.<ref name="GP March 2004"/><ref name="NHC">{{cite report|type=Diagnostic Report of the National Hurricane Center: June and July 1991|title=II. Tropical cyclone activity in the Atlantic Basin: A. Overview|author=National Hurricane Center|editor1=McAdie, Colin J|url=http://hdl.handle.net/2027/uiug.30112005414658|publisher=National Oceanic and Atmospheric Administration|accessdate=May 12, 2013|pages=10–14|year=1991|editor2=Rappaport, Edward N}}</ref> In subsequent years, a few systems were suspected to have the characteristics needed to be classified as a tropical cyclone including in March 1994 and January 2004.<ref name="GP January 2004">{{cite web|title=Monthly Tropical Cyclone Summary January 2004 |accessdate=February 7, 2015 |author=Padgett, Gary |url=http://australiasevereweather.com/cyclones/2004/summ0401.htm |archiveurl=http://www.webcitation.org/6W9TGRpqN?url=http://www.australiasevereweather.com/cyclones/2004/summ0403.htm |archivedate=February 7, 2015 |deadurl=no |df= }}</ref><ref name="IWTCVI">{{cite conference|publisher=World Meteorological Organization |title=Topic 2a: The Catarina Phenomenon |url=http://severe.worldweather.org/iwtc/document/Topic_2a_Pedro_Silva_Dias.pdf |year=2006 |conference-url=http://severe.worldweather.org/iwtc/ |conference=The Sixth WMO International Workshop on Tropical Cyclones (IWTC-VI) |archiveurl=http://www.webcitation.org/6WAYJ4fTq?url=http://severe.worldweather.org/iwtc/document/Topic_2a_Pedro_Silva_Dias.pdf |archivedate=February 7, 2015 |location=San José, Costa Rica |pages=329–360 |format=PDF |accessdate=February 7, 2015 |deadurl=yes |df= }}</ref> During March 2004, an [[extratropical cyclone]] formally transitioned into a tropical cyclone and made landfall on Brazil, after becoming a Category 2 hurricane on the [[Saffir-Simpson hurricane wind scale]]. While the system was threatening the Brazilian state of [[Santa Catarina (state)|Santa Catarina]], a newspaper used the headline "Furacão Catarina," which was originally presumed to mean "furacão (hurricane) threatening (Santa) Catarina (the state)".<ref name="GP March 2004"/> After international presses started monitoring the system, "Hurricane Catarina" has formally been adopted. |
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At the Sixth WMO International Workshop on Tropical Cyclones (IWTC-VI) in 2006 it was questioned if any subtropical or tropical cyclones, had developed within the South Atlantic before Catarina.<ref name="IWTCVI"/> It was noted that suspect systems had developed in January 1970, March 1994, January 2004, March 2004, May 2004, February 2006 and March 2006.<ref name="IWTCVI"/> It was also suggested that an effort should be made to locate any possible systems using satellite imagery and synoptic data, however, it was noted that this effort may be hindered by the lack of any geostationary imagery over the basin before 1966.<ref name="IWTCVI"/> A study was subsequently performed and published during 2012 which concluded that there had been 63 subtropical cyclones in the Southern Atlantic between 1957 and 2007.<ref>{{cite journal|author2=Braun, Aviva J|publisher=American Meteorological Society|year=2012|pages=7328–7340|title=A Climatology of Subtropical Cyclones in the South Atlantic|doi=10.1175/JCLI-D-11-00212.1|journal=Journal of Climate|issue=25|author1=Evans, Jenny L}}</ref> During January 2009 a subtropical storm developed over the basin, before a tropical storm developed during March 2010 and was named Anita by Brazilian public and private weather services.<ref name="GPJan2009">{{cite web|author=Padgett, Gary|date=April 7, 2009|title=January 2009 Tropical Weather Summary|url=http://australiasevereweather.com/cyclones/2009/summ0901.htm|accessdate=April 15, 2010}}</ref><ref name="GP March 2010">{{cite web|title=Monthly Global Tropical Cyclone Tracks March 2010|accessdate=February 7, 2015|url=http://www.australiasevereweather.com/cyclones/2010/trak1003.htm|archiveurl=http://www.webcitation.org/6W9TGRpqN|author=Padgett, Gary|archivedate=February 7, 2015|deadurl=no}}</ref> During 2011, the [[Brazilian Navy|Brazilian Navy Hydrographic Center]] started to assign [[Lists of tropical cyclone names#South Atlantic|names]] to tropical and subtropical cyclones, that develop within its area of responsibility to the west of 20°W when they have sustained wind speeds of at least 65 km/h (40 mph).<ref name=names>{{cite web|title=Normas Da Autoridade Marítima Para As Atividades De Meteorologia Marítima|url=http://www.mar.mil.br/dhn/dhn/downloads/normam/normam_19.pdf|publisher=Brazilian Navy|accessdate=February 6, 2015|archiveurl=http://www.webcitation.org/6W90YxOTJ|archivedate=February 6, 2015|language=Portuguese|date=2011}}</ref> |
At the Sixth WMO International Workshop on Tropical Cyclones (IWTC-VI) in 2006 it was questioned if any subtropical or tropical cyclones, had developed within the South Atlantic before Catarina.<ref name="IWTCVI"/> It was noted that suspect systems had developed in January 1970, March 1994, January 2004, March 2004, May 2004, February 2006 and March 2006.<ref name="IWTCVI"/> It was also suggested that an effort should be made to locate any possible systems using satellite imagery and synoptic data, however, it was noted that this effort may be hindered by the lack of any geostationary imagery over the basin before 1966.<ref name="IWTCVI"/> A study was subsequently performed and published during 2012 which concluded that there had been 63 subtropical cyclones in the Southern Atlantic between 1957 and 2007.<ref>{{cite journal|author2=Braun, Aviva J|publisher=American Meteorological Society|year=2012|pages=7328–7340|title=A Climatology of Subtropical Cyclones in the South Atlantic|doi=10.1175/JCLI-D-11-00212.1|journal=Journal of Climate|issue=25|author1=Evans, Jenny L}}</ref> During January 2009 a subtropical storm developed over the basin, before a tropical storm developed during March 2010 and was named Anita by Brazilian public and private weather services.<ref name="GPJan2009">{{cite web|author=Padgett, Gary|date=April 7, 2009|title=January 2009 Tropical Weather Summary|url=http://australiasevereweather.com/cyclones/2009/summ0901.htm|accessdate=April 15, 2010}}</ref><ref name="GP March 2010">{{cite web|title=Monthly Global Tropical Cyclone Tracks March 2010 |accessdate=February 7, 2015 |url=http://www.australiasevereweather.com/cyclones/2010/trak1003.htm |archiveurl=http://www.webcitation.org/6W9TGRpqN?url=http://www.australiasevereweather.com/cyclones/2004/summ0403.htm |author=Padgett, Gary |archivedate=February 7, 2015 |deadurl=no |df= }}</ref> During 2011, the [[Brazilian Navy|Brazilian Navy Hydrographic Center]] started to assign [[Lists of tropical cyclone names#South Atlantic|names]] to tropical and subtropical cyclones, that develop within its area of responsibility to the west of 20°W when they have sustained wind speeds of at least 65 km/h (40 mph).<ref name=names>{{cite web|title=Normas Da Autoridade Marítima Para As Atividades De Meteorologia Marítima |url=http://www.mar.mil.br/dhn/dhn/downloads/normam/normam_19.pdf |publisher=Brazilian Navy |accessdate=February 6, 2015 |archiveurl=http://www.webcitation.org/6W90YxOTJ?url=http://www.mar.mil.br/dhn/dhn/downloads/normam/normam_19.pdf |archivedate=February 6, 2015 |language=Portuguese |date=2011 |deadurl=yes |df= }}</ref> |
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==Known occurrences and impacts== |
==Known occurrences and impacts== |
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On March 8, 2010, a previously extratropical cyclone developed tropical characteristics and was classified as a subtropical cyclone off the coast of southern Brazil. The following day, the [[United States Naval Research Laboratory]] began monitoring the system as a system of interest under the designation of ''90Q''. The [[National Hurricane Center]] also began monitoring the system as Low SL90. During the afternoon of March 9, the system had attained an intensity of 55 km/h (35 mph) and a [[barometric pressure]] of 1000 hPa (mbar). It was declared a tropical storm on March 10 and became extratropical late on March 12.<ref>http://www.webcitation.org/5o7vOfDzk</ref> Anita's [[accumulated cyclone energy]] was estimated at 2.0525 by the Florida State University. There was no damage associated to the storm, except high sea in the coasts of Rio Grande do Sul and Santa Catarina. Post mortem, the cyclone was given the name "Anita" by private and public weather centers from Southern Brazil.<ref name="BZMet">{{cite web|publisher=Brazilian Meteorological Service |date=March 2010 |title=Monitoramento - Ciclone tropical na costa gaúcha |url=http://www.metsul.com/blog/ |language=Portuguese |deadurl= |
On March 8, 2010, a previously extratropical cyclone developed tropical characteristics and was classified as a subtropical cyclone off the coast of southern Brazil. The following day, the [[United States Naval Research Laboratory]] began monitoring the system as a system of interest under the designation of ''90Q''. The [[National Hurricane Center]] also began monitoring the system as Low SL90. During the afternoon of March 9, the system had attained an intensity of 55 km/h (35 mph) and a [[barometric pressure]] of 1000 hPa (mbar). It was declared a tropical storm on March 10 and became extratropical late on March 12.<ref>http://www.webcitation.org/5o7vOfDzk?url=http://www.hpc.ncep.noaa.gov/discussions/fxsa20.html</ref> Anita's [[accumulated cyclone energy]] was estimated at 2.0525 by the Florida State University. There was no damage associated to the storm, except high sea in the coasts of Rio Grande do Sul and Santa Catarina. Post mortem, the cyclone was given the name "Anita" by private and public weather centers from Southern Brazil.<ref name="BZMet">{{cite web|publisher=Brazilian Meteorological Service |date=March 2010 |title=Monitoramento - Ciclone tropical na costa gaúcha |url=http://www.metsul.com/blog/ |language=Portuguese |deadurl=yes |archiveurl=http://www.webcitation.org/5o7aEbpqG?url=http://www.metsul.com/blog/ |archivedate=March 10, 2010 |df= }}</ref> |
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Early on March 14, 2011, the Navy Hydrographic Center-[[Brazilian Navy]] (SMM), in coordination with the National Institute of Meteorology, were monitoring an organizing area of [[convection (meteorology)|convection]] near the southeast coast of Brazil.<ref>{{cite web|author=Chura, Ledesma, Davison |title=South American Synopsis |publisher=Hydrometeorological Prediction Center |date=March 14, 2011 |accessdate=March 14, 2011 |url=http://www.hpc.ncep.noaa.gov/discussions/fxsa20.html |deadurl= |
Early on March 14, 2011, the Navy Hydrographic Center-[[Brazilian Navy]] (SMM), in coordination with the National Institute of Meteorology, were monitoring an organizing area of [[convection (meteorology)|convection]] near the southeast coast of Brazil.<ref>{{cite web|author=Chura, Ledesma, Davison |title=South American Synopsis |publisher=Hydrometeorological Prediction Center |date=March 14, 2011 |accessdate=March 14, 2011 |url=http://www.hpc.ncep.noaa.gov/discussions/fxsa20.html |deadurl=yes |archiveurl=http://www.webcitation.org/5xBkoaJWa?url=http://www.hpc.ncep.noaa.gov/discussions/fxsa20.html |archivedate=March 14, 2011 |df= }}</ref> Later that day a [[low pressure area]] developed just east of [[Vitória, Brazil|Vitória]], [[Espírito Santo]],<ref>{{cite web|author=Chura, Ledesma, Davison |title=South American Synopsis (2) |publisher=Hydrometeorological Prediction Center |date=March 14, 2011 |accessdate=March 14, 2011 |url=http://www.hpc.ncep.noaa.gov/discussions/fxsa21.html |deadurl=yes |archiveurl=http://www.webcitation.org/5xBlOwyHD?url=http://www.hpc.ncep.noaa.gov/discussions/fxsa21.html |archivedate=March 14, 2011 |df= }}</ref> and by 1200 [[Coordinated Universal Time|UTC]], the system organized into a [[subtropical cyclone|subtropical depression]], located about 140 km (90 mi) east of [[Campos dos Goytacazes]].<ref>{{cite web|author=Marine Meteorological Service |publisher=Brazil Navy Hydrographic Center |date=March 14, 2011 |title=Weather and Sea Bulletin Referent Analysis 1200 GMT - 14/MAR/2011 |accessdate=March 14, 2011 |url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |deadurl=yes |archiveurl=http://www.webcitation.org/5xBkFt1UJ?url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |archivedate=March 14, 2011 |df= }}</ref> Guided by a [[trough (meteorology)|trough]] and a weak [[ridge (meteorology)|ridge]] to its north, the system moved slowly southeastward over an area of warm waters,<ref>{{cite web|author=Chura, Ledesma, Davison |title=South American Synopsis (3) |publisher=Hydrometeorological Prediction Center |date=March 15, 2011 |accessdate=March 15, 2011 |url=http://www.hpc.ncep.noaa.gov/discussions/fxsa21.html |deadurl=yes |archiveurl=http://www.webcitation.org/5xCyMZt9W?url=http://www.hpc.ncep.noaa.gov/discussions/fxsa21.html |archivedate=March 15, 2011 |df= }}</ref><ref>{{cite web|author=Chura, Ledesma, Davison |title=South American Synopsis (4) |publisher=Hydrometeorological Prediction Center |date=March 15, 2011 |accessdate=March 15, 2011 |url=http://www.hpc.ncep.noaa.gov/discussions/fxsa20.html |deadurl=yes |archiveurl=http://www.webcitation.org/5xCwhzIl1?url=http://www.hpc.ncep.noaa.gov/discussions/fxsa20.html |archivedate=March 15, 2011 |df= }}</ref> intensifying into Subtropical Cyclone Arani on March 15,<ref>{{cite web|author=Marine Meteorological Service |publisher=Brazil Navy Hydrographic Center |date=March 15, 2011 |title=Severe Weather Warnings |accessdate=March 15, 2011 |url=http://www.mar.mil.br/dhn/chm/meteo/prev/avisos/avisosing.htm |deadurl=yes |archiveurl=http://www.webcitation.org/5xCwy72IM?url=http://www.mar.mil.br/dhn/chm/meteo/prev/avisos/avisosing.htm |archivedate=March 15, 2011 |df= }}</ref> as named by the Brazilian Navy Hydrographic Center.<ref name="March11BrazilianNavy">{{cite web|url=http://www.mar.mil.br/dhn/chm/meteo/prev/avisos/avisosing.htm |title=Severe Weather Warnings - March 11, 2011 |date=March 11, 2011 |publisher=[[Brazilian Navy]] |accessdate=March 15, 2011 |deadurl=yes |archiveurl=http://www.webcitation.org/5xCwy72IM?url=http://www.mar.mil.br/dhn/chm/meteo/prev/avisos/avisosing.htm |archivedate=March 15, 2011 |df= }}</ref> The storm was classified as subtropical, as the convection was east of the center. On March 16, Arani began experiencing 25 knots of wind shear because another frontal system bumped it from behind.<ref>{{cite web|author=Rob Gutro|publisher=National Aeronautics and Space Administration|date=March 15, 2011|title=NASA's Aqua Satellite Spots Rare Southern Atlantic Sub-tropical Storm|accessdate=March 15, 2011|url=http://www.nasa.gov/mission_pages/hurricanes/archives/2011/h2011_90L.html}}</ref> |
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Before it developed into a subtropical cyclone, Arani produced torrential rains over portions of southeastern [[Brazil]], resulting in flash flooding and landslides. Significant damage was reported in portions of [[Espírito Santo]], though specifics are unknown.<ref>{{cite web|author=Unattributed|publisher=Climatempo|date=March 16, 2011|accessdate=March 19, 2011|title=Arani – tempestade subtropical afasta-se da costa do ES|url=http://www.climatempo.com.br/destaques/2011/03/16/arani-tempestade-subtropical-afasta-se-da-costa-do-es/|language=pt}}</ref> Increased swells along the coast prompted ocean travel warnings.<ref>{{cite web|author=Unattributed|publisher=Jornal De Tempo|date=March 16, 2011|accessdate=March 19, 2011|title=Após formar um olho, ciclone subtropical Arani perde força nesta quarta|url=http://jornaldotempo.uol.com.br/noticias.html/52249/|language=pt}}</ref> |
Before it developed into a subtropical cyclone, Arani produced torrential rains over portions of southeastern [[Brazil]], resulting in flash flooding and landslides. Significant damage was reported in portions of [[Espírito Santo]], though specifics are unknown.<ref>{{cite web|author=Unattributed|publisher=Climatempo|date=March 16, 2011|accessdate=March 19, 2011|title=Arani – tempestade subtropical afasta-se da costa do ES|url=http://www.climatempo.com.br/destaques/2011/03/16/arani-tempestade-subtropical-afasta-se-da-costa-do-es/|language=pt}}</ref> Increased swells along the coast prompted ocean travel warnings.<ref>{{cite web|author=Unattributed|publisher=Jornal De Tempo|date=March 16, 2011|accessdate=March 19, 2011|title=Após formar um olho, ciclone subtropical Arani perde força nesta quarta|url=http://jornaldotempo.uol.com.br/noticias.html/52249/|language=pt}}</ref> |
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During February 5, 2015, a subtropical depression developed about {{convert|105|mi|km|disp=5|abbr=on}} to the southeast of [[São Paulo]], [[Brazil]].<ref>{{cite web|url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |publisher=Marinha do Brasil - Navy Hydrographic Centre |accessdate=February 5, 2015 |date=February 5, 2015 |title=Weather and Sea Bulletin Referent Analysis 1200 UTC for February 5, 2015 |deadurl= |
During February 5, 2015, a subtropical depression developed about {{convert|105|mi|km|disp=5|abbr=on}} to the southeast of [[São Paulo]], [[Brazil]].<ref>{{cite web|url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |publisher=Marinha do Brasil - Navy Hydrographic Centre |accessdate=February 5, 2015 |date=February 5, 2015 |title=Weather and Sea Bulletin Referent Analysis 1200 UTC for February 5, 2015 |deadurl=yes |archiveurl=http://www.webcitation.org/6W7f4mJbp?url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |archivedate=February 5, 2015 |df= }}</ref> Over the next day low-level [[Baroclinity|baroclincity]] decreased around the system, as it moved south-eastwards away from the Brazilian coast and intensified further.<ref>http://www.webcitation.org/6WC1P8mZO?url=http://www.hpc.ncep.noaa.gov/discussions/hpcdiscussions.php?disc=fxsa21</ref> The system was named Bapo by the Brazilian Navy Hydrography Center during February 6, after it had intensified into a subtropical storm.<ref>{{cite web|url=http://thevane.gawker.com/rare-subtropical-storm-forms-off-the-coast-of-brazil-1684420069 |title=Archived copy |accessdate=2015-02-08 |deadurl=yes |archiveurl=https://web.archive.org/web/20150208225137/http://thevane.gawker.com/rare-subtropical-storm-forms-off-the-coast-of-brazil-1684420069 |archivedate=2015-02-08 |df= }}</ref><ref>{{cite web|url=http://www.cptec.inpe.br/~rupload/arquivo/analise_06022015.pdf|publisher=CPTEC - INPE|accessdate=February 6, 2015|date=February 6, 2015|title=Análise Sinótica – 06/02/2015}}</ref> Over the next couple of days the system continued to move south-eastwards before it transitioned into an [[extratropical cyclone]] during February 8.<ref>{{cite web|title=Weather and Sea Bulletin Referent Analysis 0000 UTC - 08/FEB/2015 |url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |publisher=Brazilian Navy Hydrography Center - Marine Meteorological Service |accessdate=February 8, 2015 |archiveurl=http://www.webcitation.org/6WBHXQFmA?url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |archivedate=February 8, 2015 |deadurl=yes |df= }}</ref> |
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On March 10, 2015, the Hydrographic Center of the Brazilian Navy began issuing warnings of Subtropical Depression 3 during early afternoon,<ref>{{cite web|url=http://www.mar.mil.br/dhn/chm/meteo/prev/cartas/C15031012.jpg|publisher=Marinha do Brasil - Navy Hydrographic Centre|accessdate=March 11, 2015|date=March 10, 2015|title=Análise Sinótica de 1200 UTC}}</ref> while CPTEC already assigned the name ''Cari'' for the storm.<ref>{{cite web|url=http://www.cptec.inpe.br/~rupload/arquivo/analise_10032015.pdf|publisher=CPTEC - INPE|accessdate=March 11, 2015|date=March 10, 2015|title=Análise Sinótica – 10/03/2015}}</ref> At 0000 UTC on March 11, the Hydrographic Center of the Brazilian Navy upgraded Cari to a subtropical storm, also assigning a name to it.<ref>{{cite web|url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |publisher=Marinha do Brasil - Navy Hydrographic Centre |accessdate=March 11, 2015 |date=March 11, 2015 |title=Weather and Sea Bulletin Referent Analysis 0000 UTC - 11/03/2015 |deadurl= |
On March 10, 2015, the Hydrographic Center of the Brazilian Navy began issuing warnings of Subtropical Depression 3 during early afternoon,<ref>{{cite web|url=http://www.mar.mil.br/dhn/chm/meteo/prev/cartas/C15031012.jpg|publisher=Marinha do Brasil - Navy Hydrographic Centre|accessdate=March 11, 2015|date=March 10, 2015|title=Análise Sinótica de 1200 UTC}}</ref> while CPTEC already assigned the name ''Cari'' for the storm.<ref>{{cite web|url=http://www.cptec.inpe.br/~rupload/arquivo/analise_10032015.pdf|publisher=CPTEC - INPE|accessdate=March 11, 2015|date=March 10, 2015|title=Análise Sinótica – 10/03/2015}}</ref> At 0000 UTC on March 11, the Hydrographic Center of the Brazilian Navy upgraded Cari to a subtropical storm, also assigning a name to it.<ref>{{cite web|url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |publisher=Marinha do Brasil - Navy Hydrographic Centre |accessdate=March 11, 2015 |date=March 11, 2015 |title=Weather and Sea Bulletin Referent Analysis 0000 UTC - 11/03/2015 |deadurl=yes |archiveurl=http://www.webcitation.org/6Wx6H2Aw9?url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |archivedate=March 11, 2015 |df= }}</ref> On March 12, the Brazilian Hydrographic Center downgraded Cari to a subtropical depression,<ref>{{cite web|url=https://www.mar.mil.br/dhn/chm/meteo/prev/cartas/C15031200.jpg|publisher=Marinha do Brasil - Navy Hydrographic Centre|accessdate=March 12, 2015|date=March 12, 2015|title=Análise Sinótica de 0000 UTC}}</ref> while the CPTEC stated that the storm became a "Hybrid cyclone".<ref>{{cite web|url=http://www.cptec.inpe.br/noticias/noticia/127378|publisher=CPTEC - INPE|accessdate=March 12, 2015|date=March 12, 2015|title=Análise Sinótica – 12/03/2015}}</ref> During early afternoon of March 13, the Brazilian Navy declared that Cari became a remnant low.<ref>{{cite web|url=https://www.mar.mil.br/dhn/chm/meteo/prev/cartas/C15031312.jpg|publisher=Marinha do Brasil - Navy Hydrographic Centre|accessdate=March 14, 2015|date=March 13, 2015|title=Análise Sinótica de 1200 UTC}}</ref> |
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Cari brought heavy rainfall, flooding and landslides to eastern cities of [[Santa Catarina (state)|Santa Catarina]] and [[Rio Grande do Sul]] states.<ref name="Metsul">{{cite web|url=http://www.metsul.com/blog2012/Home/home/843/Cari_%C3%A9_rebaixado_ao_enfraquecer_e_ciclone_se_afasta_do_continente|publisher=Metsul|accessdate=March 14, 2015|date=March 12, 2015|title=Cari é rebaixado ao enfraquecer e ciclone se afasta do continente|language=portuguese}}</ref> Rain totals from 100 mm to 180 mm were observed associated with the storms and wind topped 75 km/h (45 mph) in [[Laguna, Santa Catarina|Cabo de Santa Marta]].<ref name="Metsul" /> A Navy buoy registered a 20-ft wave off the coast of Santa Catarina.<ref name="Metsul" /> |
Cari brought heavy rainfall, flooding and landslides to eastern cities of [[Santa Catarina (state)|Santa Catarina]] and [[Rio Grande do Sul]] states.<ref name="Metsul">{{cite web|url=http://www.metsul.com/blog2012/Home/home/843/Cari_%C3%A9_rebaixado_ao_enfraquecer_e_ciclone_se_afasta_do_continente|publisher=Metsul|accessdate=March 14, 2015|date=March 12, 2015|title=Cari é rebaixado ao enfraquecer e ciclone se afasta do continente|language=portuguese}}</ref> Rain totals from 100 mm to 180 mm were observed associated with the storms and wind topped 75 km/h (45 mph) in [[Laguna, Santa Catarina|Cabo de Santa Marta]].<ref name="Metsul" /> A Navy buoy registered a 20-ft wave off the coast of Santa Catarina.<ref name="Metsul" /> |
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A subtropical depression formed southwest of [[Rio de Janeiro]] on November 15, 2016.<ref>{{cite web|title=Weather and Sea Bulletin Issued at 1200 UTC - 15/NOV/2016|url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm|publisher=Brazilian Navy Hydrography Center|accessdate=15 November 2016|archiveurl=http://www.webcitation.org/6m2gpAh4O|archivedate=15 November 2016|date=15 November 2016}}</ref> It intensified into a subtropical storm and received the name ''Deni'' on November 16.<ref>{{cite web|title=Weather and Sea Bulletin Issued at 0000 UTC - 16/NOV/2016|url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm|publisher=Brazilian Navy Hydrography Center|accessdate=16 November 2016|archiveurl=https://web.archive.org/web/20161116034310/http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm|archivedate=16 November 2016|date=16 November 2016}}</ref> Moving south-southeastwards, Deni soon became extratropical shortly before 00:00 UTC on November 17.<ref>{{cite web|title=Weather and Sea Bulletin Issued at 0000 UTC - 17/NOV/2016|url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm|publisher=Brazilian Navy Hydrography Center|accessdate=17 November 2016|archiveurl=http://www.webcitation.org/6m4z3QPKm|archivedate=17 November 2016|date=17 November 2016}}</ref> |
A subtropical depression formed southwest of [[Rio de Janeiro]] on November 15, 2016.<ref>{{cite web|title=Weather and Sea Bulletin Issued at 1200 UTC - 15/NOV/2016 |url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |publisher=Brazilian Navy Hydrography Center |accessdate=15 November 2016 |archiveurl=http://www.webcitation.org/6m2gpAh4O?url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |archivedate=15 November 2016 |date=15 November 2016 |deadurl=yes |df= }}</ref> It intensified into a subtropical storm and received the name ''Deni'' on November 16.<ref>{{cite web|title=Weather and Sea Bulletin Issued at 0000 UTC - 16/NOV/2016|url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm|publisher=Brazilian Navy Hydrography Center|accessdate=16 November 2016|archiveurl=https://web.archive.org/web/20161116034310/http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm|archivedate=16 November 2016|date=16 November 2016}}</ref> Moving south-southeastwards, Deni soon became extratropical shortly before 00:00 UTC on November 17.<ref>{{cite web|title=Weather and Sea Bulletin Issued at 0000 UTC - 17/NOV/2016 |url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |publisher=Brazilian Navy Hydrography Center |accessdate=17 November 2016 |archiveurl=http://www.webcitation.org/6m4z3QPKm?url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |archivedate=17 November 2016 |date=17 November 2016 |deadurl=yes |df= }}</ref> |
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An extratropical cyclone entered the ocean from [[Santa Catarina (state)|Santa Catarina]] early on December 4, 2016.<ref>{{cite web|title=Sea Level Pressure Chart 0000 UTC for 4 Dec 2016|url=http://www.mar.mil.br/dhn/chm/meteo/prev/cartas/C16120400.jpg|publisher=Brazilian Navy Hydrography Center|accessdate=5 December 2016|archiveurl=https://web.archive.org/web/20161205084452/http://www.mar.mil.br/dhn/chm/meteo/prev/cartas/C16120400.jpg|archivedate=5 December 2016|language=Portuguese|format=JPEG|date=4 December 2016}}</ref> Later, it intensified quickly and then transitioned into a subtropical storm shortly before 22:00 [[Time in Brazil|BRST]] (00:00 UTC on December 5), with the name ''Eçaí'' assigned by the Hydrographic Center of the Brazilian Navy.<ref>{{cite web|title=Weather and Sea Bulletin Issued at 0000 UTC - 05/DEC/2016|url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm|publisher=Brazilian Navy Hydrography Center|accessdate=5 December 2016|archiveurl=http://www.webcitation.org/6m2gpAh4O|archivedate= |
An extratropical cyclone entered the ocean from [[Santa Catarina (state)|Santa Catarina]] early on December 4, 2016.<ref>{{cite web|title=Sea Level Pressure Chart 0000 UTC for 4 Dec 2016|url=http://www.mar.mil.br/dhn/chm/meteo/prev/cartas/C16120400.jpg|publisher=Brazilian Navy Hydrography Center|accessdate=5 December 2016|archiveurl=https://web.archive.org/web/20161205084452/http://www.mar.mil.br/dhn/chm/meteo/prev/cartas/C16120400.jpg|archivedate=5 December 2016|language=Portuguese|format=JPEG|date=4 December 2016}}</ref> Later, it intensified quickly and then transitioned into a subtropical storm shortly before 22:00 [[Time in Brazil|BRST]] (00:00 UTC on December 5), with the name ''Eçaí'' assigned by the Hydrographic Center of the Brazilian Navy.<ref>{{cite web|title=Weather and Sea Bulletin Issued at 0000 UTC - 05/DEC/2016 |url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |publisher=Brazilian Navy Hydrography Center |accessdate=5 December 2016 |archiveurl=http://www.webcitation.org/6m2gpAh4O?url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |archivedate=15 November 2016 |date=5 December 2016 |deadurl=yes |df= }}</ref> Eçaí started to decay on December 5 and weakened into a subtropical depression at around 00:00 UTC on December 6.<ref>{{cite web|title=Weather and Sea Bulletin Issued at 0000 UTC - 06/DEC/2016 |url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |publisher=Brazilian Navy Hydrography Center |accessdate=6 December 2016 |archiveurl=http://www.webcitation.org/6mY1wIGWD?url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |archivedate=6 December 2016 |date=6 December 2016 |deadurl=yes |df= }}</ref> |
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===2010–2016=== |
===2010–2016=== |
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[[File:November 2010 subtropical cyclone.jpg|thumb|Subtropical storm in November 2010]] |
[[File:November 2010 subtropical cyclone.jpg|thumb|Subtropical storm in November 2010]] |
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On November 16, 2010, a cold-core mid to upper-level [[Trough (meteorology)|trough]] in phase with a low-level warm-core [[Low pressure area|low]] formed a [[Pressure system|system]] state in [[Brazil]] and moved southeastward into the [[Atlantic Ocean|South Atlantic]], where it slightly deepened.<ref name="BMet">{{cite web|publisher=CPTEC - INPE|date=November 2010|title=Análise Sinótica: 17/11/2010-00Z|url=http://tempo.cptec.inpe.br/bol_tecnico.shtml|language=Portuguese|archiveurl=http://www.webcitation.org/5uMZq1iOM|archivedate=November 19, 2010}}</ref> The system brought locally heavy rains in southern Brazil and northeast of Uruguay that exceeded 200 millimeters in a few hours in some locations of Southern Rio Grande do Sul northwest of Pelotas.<ref name="MetS">{{cite web|publisher=METSUL|date=November 2010|title=Baixas começam a semana "em alta"|url=http://www.metsul.com/blog/|language=Portuguese|archiveurl=http://www.webcitation.org/5uMZq1iOM|archivedate=November 19, 2010}}</ref> Damages and flooding were observed in Cerrito, São Lourenço do Sul and Pedro Osório.<ref name="MetS" /> Bañado de Pajas, departament of Cerro Largo in Uruguay, recorded 240 mm of rain.<ref name="MetS" /> The subtropical cyclone then became a weak trough on November 19, according to the CPTEC.<ref>{{cite web|title=Boletim Technico 19/11/10 - 00z |url=http://tempo.cptec.inpe.br/bol_tecnico.shtml |publisher=CPTEC |deadurl= |
On November 16, 2010, a cold-core mid to upper-level [[Trough (meteorology)|trough]] in phase with a low-level warm-core [[Low pressure area|low]] formed a [[Pressure system|system]] state in [[Brazil]] and moved southeastward into the [[Atlantic Ocean|South Atlantic]], where it slightly deepened.<ref name="BMet">{{cite web|publisher=CPTEC - INPE |date=November 2010 |title=Análise Sinótica: 17/11/2010-00Z |url=http://tempo.cptec.inpe.br/bol_tecnico.shtml |language=Portuguese |archiveurl=http://www.webcitation.org/5uMZq1iOM?url=http://tempo.cptec.inpe.br/bol_tecnico.shtml |archivedate=November 19, 2010 |deadurl=yes |df= }}</ref> The system brought locally heavy rains in southern Brazil and northeast of Uruguay that exceeded 200 millimeters in a few hours in some locations of Southern Rio Grande do Sul northwest of Pelotas.<ref name="MetS">{{cite web|publisher=METSUL |date=November 2010 |title=Baixas começam a semana "em alta" |url=http://www.metsul.com/blog/ |language=Portuguese |archiveurl=http://www.webcitation.org/5uMZq1iOM?url=http://tempo.cptec.inpe.br/bol_tecnico.shtml |archivedate=November 19, 2010 |deadurl=yes |df= }}</ref> Damages and flooding were observed in Cerrito, São Lourenço do Sul and Pedro Osório.<ref name="MetS" /> Bañado de Pajas, departament of Cerro Largo in Uruguay, recorded 240 mm of rain.<ref name="MetS" /> The subtropical cyclone then became a weak trough on November 19, according to the CPTEC.<ref>{{cite web|title=Boletim Technico 19/11/10 - 00z |url=http://tempo.cptec.inpe.br/bol_tecnico.shtml |publisher=CPTEC |deadurl=yes |archiveurl=http://www.webcitation.org/5uMp0glTN?url=http://tempo.cptec.inpe.br/bol_tecnico.shtml |archivedate=November 19, 2010 |df= }}</ref> |
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Between December 23, 2013 and January 24, 2015, the Center for Weather Forecast and Climatic Studies (CPTEC) and Navy Hydrography Center monitored four subtropical depressions to the south of [[Rio de Janeiro]]. The first one lasted until [[Christmas Day]], 2013.<ref>{{cite web|publisher=CPTEC - INPE|date=December 23, 2013|title=Análise Sinótica – 23/12/2013|url=http://www.cptec.inpe.br/~rupload/arquivo/analise_23122013.pdf|language=Portuguese|accessdate=February 24, 2014}}</ref><ref>{{cite web|publisher=CPTEC - INPE|date=December 24, 2013|title=Análise Sinótica – 24/12/2013|url=http://www.cptec.inpe.br/~rupload/arquivo/analise_24122013.pdf|language=Portuguese|accessdate=February 24, 2014}}</ref><ref name="CPTECDEC">{{cite web|publisher=CPTEC - INPE|title=SÍNTESE SINÓTICA DEZEMBRO DE 2013|url=http://www.cptec.inpe.br/~rupload/arquivo/sintese_dezembro2013.pdf|language=Portuguese|accessdate=February 24, 2014}}</ref><ref>{{cite web|publisher=CPTEC - INPE|date=December 25, 2013|title=Análise Sinótica – 25/12/2013|url=http://www.cptec.inpe.br/~rupload/arquivo/analise_25122013.pdf|language=Portuguese|accessdate=February 24, 2014}}</ref> Two subtropical depressions formed in 2014: one in late-February 2014 and the other in late-March 2014.<ref>{{cite web|url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |publisher=Navy Hydrography Center/Brazilian Navy |accessdate=February 21, 2014 |date=February 20, 2014 |title=Weather and Sea Bulletin Referent Analysis 1200 UTC for 20 Feb 2014 |deadurl= |
Between December 23, 2013 and January 24, 2015, the Center for Weather Forecast and Climatic Studies (CPTEC) and Navy Hydrography Center monitored four subtropical depressions to the south of [[Rio de Janeiro]]. The first one lasted until [[Christmas Day]], 2013.<ref>{{cite web|publisher=CPTEC - INPE|date=December 23, 2013|title=Análise Sinótica – 23/12/2013|url=http://www.cptec.inpe.br/~rupload/arquivo/analise_23122013.pdf|language=Portuguese|accessdate=February 24, 2014}}</ref><ref>{{cite web|publisher=CPTEC - INPE|date=December 24, 2013|title=Análise Sinótica – 24/12/2013|url=http://www.cptec.inpe.br/~rupload/arquivo/analise_24122013.pdf|language=Portuguese|accessdate=February 24, 2014}}</ref><ref name="CPTECDEC">{{cite web|publisher=CPTEC - INPE|title=SÍNTESE SINÓTICA DEZEMBRO DE 2013|url=http://www.cptec.inpe.br/~rupload/arquivo/sintese_dezembro2013.pdf|language=Portuguese|accessdate=February 24, 2014}}</ref><ref>{{cite web|publisher=CPTEC - INPE|date=December 25, 2013|title=Análise Sinótica – 25/12/2013|url=http://www.cptec.inpe.br/~rupload/arquivo/analise_25122013.pdf|language=Portuguese|accessdate=February 24, 2014}}</ref> Two subtropical depressions formed in 2014: one in late-February 2014 and the other in late-March 2014.<ref>{{cite web|url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |publisher=Navy Hydrography Center/Brazilian Navy |accessdate=February 21, 2014 |date=February 20, 2014 |title=Weather and Sea Bulletin Referent Analysis 1200 UTC for 20 Feb 2014 |deadurl=yes |archiveurl=http://www.webcitation.org/6NXfB7UBu?url=http://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |archivedate=February 21, 2014 |df= }}</ref><ref>{{cite web|publisher=CPTEC - INPE|date=March 28, 2014|title=Análise Sinótica – 28/03/2014|url=http://www.cptec.inpe.br/~rupload/arquivo/analise_28032014.pdf|language=Portuguese|accessdate=January 7, 2015}}</ref><ref>{{cite web|publisher=Navy Hydrography Center|date=March 28, 2014|title=Meteoromarinha referente à análise de 1200 HMG - 28/mar/2014|url=https://www.mar.mil.br/dhn/chm/meteo/prev/iac/P14032812.iac|language=Portuguese|accessdate=January 7, 2015}}</ref> A fourth one formed in late January 2015.<ref>{{cite web|url=http://www.mar.mil.br/dhn/chm/meteo/prev/cartas/C15012312.jpg |publisher=Marinha do Brasil - Navy Hydrographic Centre |accessdate=January 25, 2015 |date=January 23, 2015 |title=Sea Level Pressure Chart 1200 UTC for 23 Jan 2015 |deadurl=yes |archiveurl=http://www.webcitation.org/6Vr3c5VTg?url=http://www.mar.mil.br/dhn/chm/meteo/prev/cartas/C15012312.jpg |archivedate=January 25, 2015 |df= }}</ref><ref>{{cite web|url=http://www.mar.mil.br/dhn/chm/meteo/prev/cartas/C15012400.jpg |publisher=Marinha do Brasil - Navy Hydrographic Centre |accessdate=January 25, 2015 |date=January 24, 2015 |title=Sea Level Pressure Chart 0000 UTC for 24 Jan 2015 |deadurl=yes |archiveurl=http://www.webcitation.org/6Vr2tugBA?url=http://www.mar.mil.br/dhn/chm/meteo/prev/cartas/C15012400.jpg |archivedate=January 25, 2015 |df= }}</ref> |
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On January 5, 2016, the Hydrographic Center of the Brazilian Navy issued warnings on a subtropical depression that formed east of [[Vitória, Brazil|Vitória]], [[Espírito Santo]].<ref>{{cite web|title=Sea Level Pressure Chart 1200 UTC - 5 Jan 2016|url=https://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm|publisher=Marinha do Brasil - Navy Hydrographic Center|accessdate=6 January 2016|archiveurl=http://www.webcitation.org/6eK3pKm2N|archivedate=6 January 2016|format=JPEG}}</ref> On the next day, the system strengthened into a tropical depression and other agencies considered it as an invest, designating it as ''90Q'';<ref name="Jan 2016 South Atlantic storm">[http://www.weather.com/storms/hurricane/news/subtropical-tropical-depression-storm-deni-south-atlantic Could a Rare Tropical Storm Form in the South Atlantic Ocean?]</ref><ref>[http://www.nrlmry.navy.mil/archdat/test/kml/TC/2016/ATL/90Q/locationfile.txt]</ref> however, on January 7, the tropical depression dissipated.<ref name="Jan 2016 South Atlantic storm" /><ref name="Atlantic subtropical system">[http://www.wunderground.com/blog/JeffMasters/rare-january-depression-in-central-pacific-atlantic-subtropical-storm Rare January Depression in Central Pacific; Atlantic Subtropical Storm Next Week?]</ref> |
On January 5, 2016, the Hydrographic Center of the Brazilian Navy issued warnings on a subtropical depression that formed east of [[Vitória, Brazil|Vitória]], [[Espírito Santo]].<ref>{{cite web|title=Sea Level Pressure Chart 1200 UTC - 5 Jan 2016 |url=https://www.mar.mil.br/dhn/chm/meteo/prev/meteoro/boletiming.htm |publisher=Marinha do Brasil - Navy Hydrographic Center |accessdate=6 January 2016 |archiveurl=http://www.webcitation.org/6eK3pKm2N?url=https://www.mar.mil.br/dhn/chm/meteo/prev/cartas/C16010512.jpg |archivedate=6 January 2016 |format=JPEG |deadurl=yes |df= }}</ref> On the next day, the system strengthened into a tropical depression and other agencies considered it as an invest, designating it as ''90Q'';<ref name="Jan 2016 South Atlantic storm">[http://www.weather.com/storms/hurricane/news/subtropical-tropical-depression-storm-deni-south-atlantic Could a Rare Tropical Storm Form in the South Atlantic Ocean?]</ref><ref>[http://www.nrlmry.navy.mil/archdat/test/kml/TC/2016/ATL/90Q/locationfile.txt]</ref> however, on January 7, the tropical depression dissipated.<ref name="Jan 2016 South Atlantic storm" /><ref name="Atlantic subtropical system">[http://www.wunderground.com/blog/JeffMasters/rare-january-depression-in-central-pacific-atlantic-subtropical-storm Rare January Depression in Central Pacific; Atlantic Subtropical Storm Next Week?]</ref> |
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==Storm names== |
==Storm names== |
Revision as of 01:55, 22 May 2017
![](http://upload.wikimedia.org/wikipedia/commons/thumb/e/ed/South_Atlantic_hurricane_tracks.png/220px-South_Atlantic_hurricane_tracks.png)
South Atlantic tropical cyclones are unusual weather events that occur in the Southern Hemisphere. Strong wind shear, which disrupts the formation of cyclones, as well as a lack of weather disturbances favorable for development in the South Atlantic Ocean make any strong tropical system extremely rare, and Catarina in 2004 was the only recorded South Atlantic hurricane in history. Those storms have only developed during the months from November through to April in this basin. Since 2011, the Brazilian Navy Hydrographic Center has started to assign names to tropical and subtropical systems in this basin, when they have sustained wind speeds of at least 65 km/h (40 mph), the generally accepted minimum sustained wind velocity for a disturbance to be designated as a tropical storm in the North Atlantic basin. Below is a list of notable South Atlantic tropical and subtropical cyclones.
Theories concerning infrequency of occurrence
Until April 1991 it was thought that tropical cyclones did not develop within the South Atlantic.[1] Very strong vertical wind shear in the troposphere is considered a deterrent.[2] The Intertropical Convergence Zone drops one to two degrees south of the equator,[3] not far enough from the equator for the Coriolis force to aid development. Water temperatures in the tropics of the southern Atlantic are cooler than those in the tropical north Atlantic.[4]
During April 1991, these assertions were proven false when the United States National Hurricane Center reported that a tropical cyclone had developed over the Eastern Atlantic.[1][5] In subsequent years, a few systems were suspected to have the characteristics needed to be classified as a tropical cyclone including in March 1994 and January 2004.[6][7] During March 2004, an extratropical cyclone formally transitioned into a tropical cyclone and made landfall on Brazil, after becoming a Category 2 hurricane on the Saffir-Simpson hurricane wind scale. While the system was threatening the Brazilian state of Santa Catarina, a newspaper used the headline "Furacão Catarina," which was originally presumed to mean "furacão (hurricane) threatening (Santa) Catarina (the state)".[1] After international presses started monitoring the system, "Hurricane Catarina" has formally been adopted.
At the Sixth WMO International Workshop on Tropical Cyclones (IWTC-VI) in 2006 it was questioned if any subtropical or tropical cyclones, had developed within the South Atlantic before Catarina.[7] It was noted that suspect systems had developed in January 1970, March 1994, January 2004, March 2004, May 2004, February 2006 and March 2006.[7] It was also suggested that an effort should be made to locate any possible systems using satellite imagery and synoptic data, however, it was noted that this effort may be hindered by the lack of any geostationary imagery over the basin before 1966.[7] A study was subsequently performed and published during 2012 which concluded that there had been 63 subtropical cyclones in the Southern Atlantic between 1957 and 2007.[8] During January 2009 a subtropical storm developed over the basin, before a tropical storm developed during March 2010 and was named Anita by Brazilian public and private weather services.[9][10] During 2011, the Brazilian Navy Hydrographic Center started to assign names to tropical and subtropical cyclones, that develop within its area of responsibility to the west of 20°W when they have sustained wind speeds of at least 65 km/h (40 mph).[11]
Known occurrences and impacts
1991 Angola tropical cyclone
Tropical storm (SSHWS) | |
Duration | April 10, 1991 – April 14, 1991 |
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Peak intensity | 65 km/h (40 mph) (1-min); |
A low pressure area formed over the Congo Basin on April 9. The next day it moved offshore northern Angola with a curved cloud pattern. It moved westward over an area of warm waters, and the circulation became better defined. According to the United States National Hurricane Center, the system was probably either a tropical depression or a tropical storm at its peak intensity. On April 14, the system rapidly dissipated as it was absorbed into a large squall line.[12][13]
Hurricane Catarina
Category 2 hurricane (SSHWS) | |
Duration | March 24, 2004 – March 28, 2004 |
---|---|
Peak intensity | 155 km/h (100 mph) (1-min); 972 hPa (mbar) |
Hurricane Catarina was an extraordinarily rare tropical cyclone, forming in the southern Atlantic Ocean in March 2004.[14] Just after becoming a hurricane, it hit the southern coast of Brazil in the state of Santa Catarina on the evening of March 28, with winds estimated near 155 kilometres per hour (96 mph), making it a Category 2-equivalent on the Saffir-Simpson Hurricane Scale. The cyclone killed 3 to 10 people and caused millions of dollars in damage in Brazil.
At the time, the Brazilians were taken completely by surprise, and were initially unwilling to believe that an actual tropical cyclone could have formed in the South Atlantic, despite the insistence of the National Hurricane Center that that was exactly what had happened. Eventually, however, they were convinced, and adopted the previously-unofficial name "Catarina" for the storm, after Santa Catarina state. This event is considered by some meteorologists to be a nearly once-in-a-lifetime occurrence.
Tropical Storm Anita
Tropical storm (SSHWS) | |
Duration | March 8, 2010 – March 12, 2010 |
---|---|
Peak intensity | 85 km/h (50 mph) (1-min); 995 hPa (mbar) |
On March 8, 2010, a previously extratropical cyclone developed tropical characteristics and was classified as a subtropical cyclone off the coast of southern Brazil. The following day, the United States Naval Research Laboratory began monitoring the system as a system of interest under the designation of 90Q. The National Hurricane Center also began monitoring the system as Low SL90. During the afternoon of March 9, the system had attained an intensity of 55 km/h (35 mph) and a barometric pressure of 1000 hPa (mbar). It was declared a tropical storm on March 10 and became extratropical late on March 12.[15] Anita's accumulated cyclone energy was estimated at 2.0525 by the Florida State University. There was no damage associated to the storm, except high sea in the coasts of Rio Grande do Sul and Santa Catarina. Post mortem, the cyclone was given the name "Anita" by private and public weather centers from Southern Brazil.[16]
Subtropical Storm Arani
Subtropical storm (SSHWS) | |
Duration | March 14, 2011 – March 16, 2011 |
---|---|
Peak intensity | 85 km/h (50 mph) (1-min); 989 hPa (mbar) |
Early on March 14, 2011, the Navy Hydrographic Center-Brazilian Navy (SMM), in coordination with the National Institute of Meteorology, were monitoring an organizing area of convection near the southeast coast of Brazil.[17] Later that day a low pressure area developed just east of Vitória, Espírito Santo,[18] and by 1200 UTC, the system organized into a subtropical depression, located about 140 km (90 mi) east of Campos dos Goytacazes.[19] Guided by a trough and a weak ridge to its north, the system moved slowly southeastward over an area of warm waters,[20][21] intensifying into Subtropical Cyclone Arani on March 15,[22] as named by the Brazilian Navy Hydrographic Center.[23] The storm was classified as subtropical, as the convection was east of the center. On March 16, Arani began experiencing 25 knots of wind shear because another frontal system bumped it from behind.[24]
Before it developed into a subtropical cyclone, Arani produced torrential rains over portions of southeastern Brazil, resulting in flash flooding and landslides. Significant damage was reported in portions of Espírito Santo, though specifics are unknown.[25] Increased swells along the coast prompted ocean travel warnings.[26]
Subtropical Storm Bapo
Subtropical storm (SSHWS) | |
Duration | February 5, 2015 – February 8, 2015 |
---|---|
Peak intensity | 65 km/h (40 mph) (1-min); 992 hPa (mbar) |
During February 5, 2015, a subtropical depression developed about 105 mi (170 km)* to the southeast of São Paulo, Brazil.[27] Over the next day low-level baroclincity decreased around the system, as it moved south-eastwards away from the Brazilian coast and intensified further.[28] The system was named Bapo by the Brazilian Navy Hydrography Center during February 6, after it had intensified into a subtropical storm.[29][30] Over the next couple of days the system continued to move south-eastwards before it transitioned into an extratropical cyclone during February 8.[31]
Subtropical Storm Cari
Subtropical storm (SSHWS) | |
Duration | March 10, 2015 – March 13, 2015 |
---|---|
Peak intensity | 65 km/h (40 mph) (1-min); 998 hPa (mbar) |
On March 10, 2015, the Hydrographic Center of the Brazilian Navy began issuing warnings of Subtropical Depression 3 during early afternoon,[32] while CPTEC already assigned the name Cari for the storm.[33] At 0000 UTC on March 11, the Hydrographic Center of the Brazilian Navy upgraded Cari to a subtropical storm, also assigning a name to it.[34] On March 12, the Brazilian Hydrographic Center downgraded Cari to a subtropical depression,[35] while the CPTEC stated that the storm became a "Hybrid cyclone".[36] During early afternoon of March 13, the Brazilian Navy declared that Cari became a remnant low.[37]
Cari brought heavy rainfall, flooding and landslides to eastern cities of Santa Catarina and Rio Grande do Sul states.[38] Rain totals from 100 mm to 180 mm were observed associated with the storms and wind topped 75 km/h (45 mph) in Cabo de Santa Marta.[38] A Navy buoy registered a 20-ft wave off the coast of Santa Catarina.[38]
Subtropical Storm Deni
Subtropical storm (SSHWS) | |
Duration | November 15, 2016 – November 16, 2016 |
---|---|
Peak intensity | 75 km/h (45 mph) (1-min); 998 hPa (mbar) |
A subtropical depression formed southwest of Rio de Janeiro on November 15, 2016.[39] It intensified into a subtropical storm and received the name Deni on November 16.[40] Moving south-southeastwards, Deni soon became extratropical shortly before 00:00 UTC on November 17.[41]
Subtropical Storm Eçaí
Subtropical storm (SSHWS) | |
Duration | December 4, 2016 – December 6, 2016 |
---|---|
Peak intensity | 100 km/h (65 mph) (1-min); 992 hPa (mbar) |
An extratropical cyclone entered the ocean from Santa Catarina early on December 4, 2016.[42] Later, it intensified quickly and then transitioned into a subtropical storm shortly before 22:00 BRST (00:00 UTC on December 5), with the name Eçaí assigned by the Hydrographic Center of the Brazilian Navy.[43] Eçaí started to decay on December 5 and weakened into a subtropical depression at around 00:00 UTC on December 6.[44]
Other systems
Pre-2004
![](http://upload.wikimedia.org/wikipedia/commons/thumb/b/bb/SATL_TD_2004-01-19_1704Z.jpg/200px-SATL_TD_2004-01-19_1704Z.jpg)
According to a presentation at the Sixth WMO International Workshop on Tropical Cyclones (IWTC-VI), satellite imagery from January 1970 showed that a system with an eyewall had developed behind a cold front and that the system needed further analysis to determine if it was tropical or subtropical.[7] On March 27, 1974, a weak area of low pressure that had originated over the Amazon River started to intensify further.[45] Over the next 48 hours the system quickly developed further and was classified as subtropical, as it developed a banding structure and deep convection near its warm core.[45] On March 29, a north-westerly flow encroached on the systems environment, which caused the system to rapidly move towards 40S and the cold waters that were present to the south of 40°S.[45] In March 1994, a system that was thought to be weaker than Catarina was spawned but was located over cool and open waters.[46]
2004–2009
During 2004 the large-scale conditions over the South Atlantic, were more conducive than usual for subtropical or tropical systems with 4 systems noted.[7] The first possible tropical cyclone developed within a trough of low pressure, to the southeast of Salvador, Brazil on January 18.[6][7] The system subsequently displayed a small central dense overcast and was suspected to be at the peak of its development as either a tropical depression or a tropical storm during the next day.[6] The system was subsequently affected by some strong shear, before it moved inland and weakened along the coast of Brazil before it was last noted during January 21.[6] Within Brazil the system caused heavy rain and flooding with a state of emergency declared in Aracaju, after the river overflowed and burst its banks which flooded homes, destroyed crops and caused parts of the highway to collapse.[6] However, it was noted that not all of the heavy rain and impacts were attributable to the system, as a large monsoon low covered much of Brazil at the time.[6] The second system was a possible hybrid cyclone that developed near south-eastern Brazil between March 15–16.[7] Hurricane Catarina was the third system, while the fourth system had a well-defined eye like structure, and formed off the coast of Brazil during on March 15, 2004.[7]
![](http://upload.wikimedia.org/wikipedia/commons/thumb/5/59/SATL_TC_Feb_23_2006_1705Z.jpg/200px-SATL_TC_Feb_23_2006_1705Z.jpg)
On February 22, 2006 a baroclinic cyclone intensified quickly and was estimated to have peaked with 1-minute sustained wind speeds of 65 mph (100 km/h), after radar data showed that the system had developed an eye and banding.[7] However, there were questions about how tropical the system was as it did not separate from the westerlies or the baroclinic zone it was in.[7][47] Between March 11–17, 2006, a system with a warm core developed and moved southwards along the South Atlantic Zone.[7]
Two subtropical cyclones affected both Uruguay and Rio Grande do Sul state in Brazil. On January 28, 2009, a cold-core mid to upper-level trough in phase with a low-level warm-core low formed a system and moved eastward into the South Atlantic.[48] The storm produced rainfall in 24 hours of 300 mm or more in some locations of Rocha (Uruguay) and southern Rio Grande do Sul. The weather station owned by MetSul Weather Center in Morro Redondo, Southern Brazil, recorded 278.2 mm in a 24-hour period. Fourteen deaths and thousands of evacuees are attributed to the storm with an emergency declared in four cities.[9] It lasted until February 1, when the cyclone became extratropical.[49]
2010–2016
![](http://upload.wikimedia.org/wikipedia/commons/thumb/a/ad/Subtropical_Cyclone_2010-11-17_0000Z.jpg/220px-Subtropical_Cyclone_2010-11-17_0000Z.jpg)
On November 16, 2010, a cold-core mid to upper-level trough in phase with a low-level warm-core low formed a system state in Brazil and moved southeastward into the South Atlantic, where it slightly deepened.[50] The system brought locally heavy rains in southern Brazil and northeast of Uruguay that exceeded 200 millimeters in a few hours in some locations of Southern Rio Grande do Sul northwest of Pelotas.[51] Damages and flooding were observed in Cerrito, São Lourenço do Sul and Pedro Osório.[51] Bañado de Pajas, departament of Cerro Largo in Uruguay, recorded 240 mm of rain.[51] The subtropical cyclone then became a weak trough on November 19, according to the CPTEC.[52]
Between December 23, 2013 and January 24, 2015, the Center for Weather Forecast and Climatic Studies (CPTEC) and Navy Hydrography Center monitored four subtropical depressions to the south of Rio de Janeiro. The first one lasted until Christmas Day, 2013.[53][54][55][56] Two subtropical depressions formed in 2014: one in late-February 2014 and the other in late-March 2014.[57][58][59] A fourth one formed in late January 2015.[60][61]
On January 5, 2016, the Hydrographic Center of the Brazilian Navy issued warnings on a subtropical depression that formed east of Vitória, Espírito Santo.[62] On the next day, the system strengthened into a tropical depression and other agencies considered it as an invest, designating it as 90Q;[63][64] however, on January 7, the tropical depression dissipated.[63][65]
Storm names
The following names are published by the Brazilian Navy Hydrographic Center and used for named storms that form in the area west of 20ºW and south of equator in the South Atlantic Ocean since 2011. Arani is confirmed to be used again in the future after its next nine names are all used, but it is unclear if those names will be also rotated.[11]
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Listed by month
There have been 25 recorded tropical and subtropical cyclones in the South Atlantic Ocean since 1974. Like most southern hemisphere cyclone seasons, all storms have formed from November to April.
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See also
- Unusual areas of tropical cyclone formation
- List of tropical cyclone records
- List of South America tropical cyclones
- Southern Hemisphere tropical cyclone
- Atlantic hurricane (North Atlantic tropical cyclone)
- Atlantic Equatorial mode
- Mediterranean tropical-like cyclone
- Tropical cyclone basins
- 2006 Central Pacific cyclone
- 1996 Lake Huron cyclone
References
- ^ a b c Padgett, Gary. "Monthly Tropical Cyclone Summary March 2004". Archived from the original on February 7, 2015. Retrieved February 7, 2015.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ Landsea, Christopher W (July 13, 2005). "Subject: Tropical Cyclone Names: G6) Why doesn't the South Atlantic Ocean experience tropical cyclones?". Tropical Cyclone Frequently Asked Question. United States National Oceanic and Atmospheric Administration's Hurricane Research Division. Archived from the original on February 7, 2015. Retrieved February 7, 2015.
{{cite book}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ Gordon E. Dunn; Banner I. Miller (1960). Atlantic Hurricanes. Louisiana State University Press. p. 33. ASIN B0006BM85S.
{{cite book}}
: Unknown parameter|lastauthoramp=
ignored (|name-list-style=
suggested) (help) - ^ Atlantic Oceanographic and Meteorological Laboratory, Hurricane Research Division. "Frequently Asked Questions: How do tropical cyclones form?". National Oceanic and Atmospheric Administration. Retrieved July 26, 2006.
- ^ National Hurricane Center (1991). McAdie, Colin J; Rappaport, Edward N (eds.). II. Tropical cyclone activity in the Atlantic Basin: A. Overview (Diagnostic Report of the National Hurricane Center: June and July 1991). National Oceanic and Atmospheric Administration. pp. 10–14. Retrieved May 12, 2013.
- ^ a b c d e f Padgett, Gary. "Monthly Tropical Cyclone Summary January 2004". Archived from the original on February 7, 2015. Retrieved February 7, 2015.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ a b c d e f g h i j k l Topic 2a: The Catarina Phenomenon (PDF). The Sixth WMO International Workshop on Tropical Cyclones (IWTC-VI). San José, Costa Rica: World Meteorological Organization. 2006. pp. 329–360. Archived from the original (PDF) on February 7, 2015. Retrieved February 7, 2015.
{{cite conference}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ Evans, Jenny L; Braun, Aviva J (2012). "A Climatology of Subtropical Cyclones in the South Atlantic". Journal of Climate (25). American Meteorological Society: 7328–7340. doi:10.1175/JCLI-D-11-00212.1.
- ^ a b Padgett, Gary (April 7, 2009). "January 2009 Tropical Weather Summary". Retrieved April 15, 2010.
- ^ Padgett, Gary. "Monthly Global Tropical Cyclone Tracks March 2010". Archived from the original on February 7, 2015. Retrieved February 7, 2015.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ a b "Normas Da Autoridade Marítima Para As Atividades De Meteorologia Marítima" (PDF) (in Portuguese). Brazilian Navy. 2011. Archived from the original (PDF) on February 6, 2015. Retrieved February 6, 2015.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ National Hurricane Center (1991). McAdie, Colin J; Rappaport, Edward N (eds.). II. Tropical cyclone activity in the Atlantic Basin: A. Overview (Diagnostic Report of the National Hurricane Center: June and July 1991). National Oceanic and Atmospheric Administration. pp. 10, 13, 14. Retrieved May 12, 2013.
- ^ Marcel Leroux (2001). "Tropical Cyclones". The Meteorology and Climate of Tropical Africa. Praxis Publishing Ltd. p. 314. Retrieved March 28, 2013.
- ^ College of Earth; Mineral Sciences (2004). "Upper-level lows". Pennsylvania State University. Retrieved 2009-05-14.
{{cite web}}
: Unknown parameter|lastauthoramp=
ignored (|name-list-style=
suggested) (help) - ^ http://www.webcitation.org/5o7vOfDzk?url=http://www.hpc.ncep.noaa.gov/discussions/fxsa20.html
- ^ "Monitoramento - Ciclone tropical na costa gaúcha" (in Portuguese). Brazilian Meteorological Service. March 2010. Archived from the original on March 10, 2010.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ Chura, Ledesma, Davison (March 14, 2011). "South American Synopsis". Hydrometeorological Prediction Center. Archived from the original on March 14, 2011. Retrieved March 14, 2011.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help)CS1 maint: multiple names: authors list (link) - ^ Chura, Ledesma, Davison (March 14, 2011). "South American Synopsis (2)". Hydrometeorological Prediction Center. Archived from the original on March 14, 2011. Retrieved March 14, 2011.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help)CS1 maint: multiple names: authors list (link) - ^ Marine Meteorological Service (March 14, 2011). "Weather and Sea Bulletin Referent Analysis 1200 GMT - 14/MAR/2011". Brazil Navy Hydrographic Center. Archived from the original on March 14, 2011. Retrieved March 14, 2011.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ Chura, Ledesma, Davison (March 15, 2011). "South American Synopsis (3)". Hydrometeorological Prediction Center. Archived from the original on March 15, 2011. Retrieved March 15, 2011.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help)CS1 maint: multiple names: authors list (link) - ^ Chura, Ledesma, Davison (March 15, 2011). "South American Synopsis (4)". Hydrometeorological Prediction Center. Archived from the original on March 15, 2011. Retrieved March 15, 2011.
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: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help)CS1 maint: multiple names: authors list (link) - ^ Marine Meteorological Service (March 15, 2011). "Severe Weather Warnings". Brazil Navy Hydrographic Center. Archived from the original on March 15, 2011. Retrieved March 15, 2011.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ Rob Gutro (March 15, 2011). "NASA's Aqua Satellite Spots Rare Southern Atlantic Sub-tropical Storm". National Aeronautics and Space Administration. Retrieved March 15, 2011.
- ^ Unattributed (March 16, 2011). "Arani – tempestade subtropical afasta-se da costa do ES" (in Portuguese). Climatempo. Retrieved March 19, 2011.
- ^ Unattributed (March 16, 2011). "Após formar um olho, ciclone subtropical Arani perde força nesta quarta" (in Portuguese). Jornal De Tempo. Retrieved March 19, 2011.
- ^ "Weather and Sea Bulletin Referent Analysis 1200 UTC for February 5, 2015". Marinha do Brasil - Navy Hydrographic Centre. February 5, 2015. Archived from the original on February 5, 2015. Retrieved February 5, 2015.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ http://www.webcitation.org/6WC1P8mZO?url=http://www.hpc.ncep.noaa.gov/discussions/hpcdiscussions.php?disc=fxsa21
- ^ "Archived copy". Archived from the original on 2015-02-08. Retrieved 2015-02-08.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help)CS1 maint: archived copy as title (link) - ^ "Análise Sinótica – 06/02/2015" (PDF). CPTEC - INPE. February 6, 2015. Retrieved February 6, 2015.
- ^ "Weather and Sea Bulletin Referent Analysis 0000 UTC - 08/FEB/2015". Brazilian Navy Hydrography Center - Marine Meteorological Service. Archived from the original on February 8, 2015. Retrieved February 8, 2015.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ "Análise Sinótica de 1200 UTC". Marinha do Brasil - Navy Hydrographic Centre. March 10, 2015. Retrieved March 11, 2015.
- ^ "Análise Sinótica – 10/03/2015" (PDF). CPTEC - INPE. March 10, 2015. Retrieved March 11, 2015.
- ^ "Weather and Sea Bulletin Referent Analysis 0000 UTC - 11/03/2015". Marinha do Brasil - Navy Hydrographic Centre. March 11, 2015. Archived from the original on March 11, 2015. Retrieved March 11, 2015.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ "Análise Sinótica de 0000 UTC". Marinha do Brasil - Navy Hydrographic Centre. March 12, 2015. Retrieved March 12, 2015.
- ^ "Análise Sinótica – 12/03/2015". CPTEC - INPE. March 12, 2015. Retrieved March 12, 2015.
- ^ "Análise Sinótica de 1200 UTC". Marinha do Brasil - Navy Hydrographic Centre. March 13, 2015. Retrieved March 14, 2015.
- ^ a b c "Cari é rebaixado ao enfraquecer e ciclone se afasta do continente" (in Portuguese). Metsul. March 12, 2015. Retrieved March 14, 2015.
- ^ "Weather and Sea Bulletin Issued at 1200 UTC - 15/NOV/2016". Brazilian Navy Hydrography Center. 15 November 2016. Archived from the original on 15 November 2016. Retrieved 15 November 2016.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ "Weather and Sea Bulletin Issued at 0000 UTC - 16/NOV/2016". Brazilian Navy Hydrography Center. 16 November 2016. Archived from the original on 16 November 2016. Retrieved 16 November 2016.
- ^ "Weather and Sea Bulletin Issued at 0000 UTC - 17/NOV/2016". Brazilian Navy Hydrography Center. 17 November 2016. Archived from the original on 17 November 2016. Retrieved 17 November 2016.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ "Sea Level Pressure Chart 0000 UTC for 4 Dec 2016" (in Portuguese). Brazilian Navy Hydrography Center. 4 December 2016. Archived from the original (JPEG) on 5 December 2016. Retrieved 5 December 2016.
- ^ "Weather and Sea Bulletin Issued at 0000 UTC - 05/DEC/2016". Brazilian Navy Hydrography Center. 5 December 2016. Archived from the original on 15 November 2016. Retrieved 5 December 2016.
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: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ "Weather and Sea Bulletin Issued at 0000 UTC - 06/DEC/2016". Brazilian Navy Hydrography Center. 6 December 2016. Archived from the original on 6 December 2016. Retrieved 6 December 2016.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ a b c McTaggart-Cowan, Ron; Bosart, Lance; Davis, Christopher; Eyad, Atallah; Gyakum, John; Emaunel, Kerry (2006). "Analysis of Hurricane Catarina (2004)". Monthly Weather Review. 134 (11). American Meteorological Society: 3048–3049. Bibcode:2006MWRv..134.3029M. doi:10.1175/MWR3330.1.
- ^ Henson, Bob (2005). "What was Catarina?". University Corporation for Atmospheric Research. Retrieved February 8, 2015.
- ^ Padgett, Gary. "Monthly Tropical Cyclone Summary February 2006". Retrieved February 7, 2015.
- ^ "Boletim Técnico – 30/01/2009" (in Portuguese). CPTEC - INPE. January 30, 2009. Retrieved February 8, 2009.
- ^ "Boletim Técnico – 01/02/2009" (in Portuguese). CPTEC - INPE. February 1, 2009. Retrieved February 8, 2009.
- ^ "Análise Sinótica: 17/11/2010-00Z" (in Portuguese). CPTEC - INPE. November 2010. Archived from the original on November 19, 2010.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ a b c "Baixas começam a semana "em alta"" (in Portuguese). METSUL. November 2010. Archived from the original on November 19, 2010.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ "Boletim Technico 19/11/10 - 00z". CPTEC. Archived from the original on November 19, 2010.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ "Análise Sinótica – 23/12/2013" (PDF) (in Portuguese). CPTEC - INPE. December 23, 2013. Retrieved February 24, 2014.
- ^ "Análise Sinótica – 24/12/2013" (PDF) (in Portuguese). CPTEC - INPE. December 24, 2013. Retrieved February 24, 2014.
- ^ "SÍNTESE SINÓTICA DEZEMBRO DE 2013" (PDF) (in Portuguese). CPTEC - INPE. Retrieved February 24, 2014.
- ^ "Análise Sinótica – 25/12/2013" (PDF) (in Portuguese). CPTEC - INPE. December 25, 2013. Retrieved February 24, 2014.
- ^ "Weather and Sea Bulletin Referent Analysis 1200 UTC for 20 Feb 2014". Navy Hydrography Center/Brazilian Navy. February 20, 2014. Archived from the original on February 21, 2014. Retrieved February 21, 2014.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ "Análise Sinótica – 28/03/2014" (PDF) (in Portuguese). CPTEC - INPE. March 28, 2014. Retrieved January 7, 2015.
- ^ "Meteoromarinha referente à análise de 1200 HMG - 28/mar/2014" (in Portuguese). Navy Hydrography Center. March 28, 2014. Retrieved January 7, 2015.
- ^ "Sea Level Pressure Chart 1200 UTC for 23 Jan 2015". Marinha do Brasil - Navy Hydrographic Centre. January 23, 2015. Archived from the original on January 25, 2015. Retrieved January 25, 2015.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ "Sea Level Pressure Chart 0000 UTC for 24 Jan 2015". Marinha do Brasil - Navy Hydrographic Centre. January 24, 2015. Archived from the original on January 25, 2015. Retrieved January 25, 2015.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
suggested) (help) - ^ "Sea Level Pressure Chart 1200 UTC - 5 Jan 2016". Marinha do Brasil - Navy Hydrographic Center. Archived from the original (JPEG) on 6 January 2016. Retrieved 6 January 2016.
{{cite web}}
: Unknown parameter|deadurl=
ignored (|url-status=
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- ^ [1]
- ^ Rare January Depression in Central Pacific; Atlantic Subtropical Storm Next Week?
External links
![](http://upload.wikimedia.org/wikipedia/en/thumb/4/4a/Commons-logo.svg/30px-Commons-logo.svg.png)