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'''July 1'''
'''July 1'''
* 03:00 UTC (11:00 p.m. AST, June 30) at {{Coord|9.6|-46.3|}} {{Endash}} Tropical Depression Five forms about {{Convert|1020|mi|km|abbr=on|round=5|}} east-southeast of the Windward Islands.{{#tag:ref|Due to the threat the developing system posed to the countries and territories in the [[Lesser Antilles]], the National Hurricane Center initiated advisories it, designating it Potential Tropical Cyclone Five at 21:00 UTC (5:00 p.m. AST) on June 30.<ref>{{Cite report|url=https://www.nhc.noaa.gov/archive/2021/al05/al052021.public.001.shtml?|title=Potential Tropical Cyclone Five Advisory Number 1|last=Beven|first=Jack|date=June 30, 2021|publisher=National Hurricane Center|location=Miami, Florida|access-date=June 30, 2021}}</ref>|group="nb"}}<ref>{{Cite report|url=https://www.nhc.noaa.gov/archive/2021/al05/al052021.public.002.shtml?|title=Tropical Depression Five Advisory Number 2|last1=Papin|first1=Philippe|last2=Brown|first2=Daniel|date=July 1, 2021|publisher=[[National Hurricane Center]]|location=Miami, Florida|language=en-US|access-date=July 1, 2021}}</ref>
* 03:00 UTC (11:00 p.m. AST, June 30) at {{Coord|9.6|-46.3|}} {{Endash}} Tropical Depression Five forms about {{Convert|1020|mi|km|abbr=on|round=5|}} east-southeast of the Windward Islands.{{#tag:ref|Due to the threat the developing system posed to the countries and territories in the [[Lesser Antilles]], the National Hurricane Center initiated advisories it, designating it ''Potential Tropical Cyclone Five'' at 21:00 UTC (5:00 p.m. AST) on June 30.<ref>{{Cite report|url=https://www.nhc.noaa.gov/archive/2021/al05/al052021.public.001.shtml?|title=Potential Tropical Cyclone Five Advisory Number 1|last=Beven|first=Jack|date=June 30, 2021|publisher=National Hurricane Center|location=Miami, Florida|access-date=June 30, 2021}}</ref>|group="nb"}}<ref>{{Cite report|url=https://www.nhc.noaa.gov/archive/2021/al05/al052021.public.002.shtml?|title=Tropical Depression Five Advisory Number 2|last1=Papin|first1=Philippe|last2=Brown|first2=Daniel|date=July 1, 2021|publisher=[[National Hurricane Center]]|location=Miami, Florida|language=en-US|access-date=July 1, 2021}}</ref>
* 09:00 UTC (5:00 a.m. AST) at {{Coord|9.4|-48.8|}} {{Endash}} Tropical Depression Five strengthens into Tropical Storm Elsa about {{Convert|865|mi|km|abbr=on|round=5}} east-southeast of the Windward Islands.<ref>{{Cite report|url=https://www.nhc.noaa.gov/archive/2021/al05/al052021.public.003.shtml?|title=Tropical Storm Elsa Advisory Number 3|last=Pasch|first=Richard|date=July 1, 2021|publisher=[[National Hurricane Center]]|location=Miami, Florida|language=en-US|access-date=July 1, 2021}}</ref>
* 09:00 UTC (5:00 a.m. AST) at {{Coord|9.4|-48.8|}} {{Endash}} Tropical Depression Five strengthens into Tropical Storm Elsa about {{Convert|865|mi|km|abbr=on|round=5}} east-southeast of the Windward Islands.<ref>{{Cite report|url=https://www.nhc.noaa.gov/archive/2021/al05/al052021.public.003.shtml?|title=Tropical Storm Elsa Advisory Number 3|last=Pasch|first=Richard|date=July 1, 2021|publisher=[[National Hurricane Center]]|location=Miami, Florida|language=en-US|access-date=July 1, 2021}}</ref>


Revision as of 05:12, 31 December 2021

For broader coverage of this topic, see 2021 Atlantic hurricane season.
Timeline of the
2021 Atlantic hurricane season
Track of all the tropical cyclones in the North Atlantic in 2021.
Season summary map
Season boundaries
First system formedMay 22, 2021
Last system dissipatedNovember 7, 2021
Strongest system
NameSam
Maximum winds155 mph (250 km/h)
(1-minute sustained)
Lowest pressure929 mbar (hPa; 27.43 inHg)
Longest lasting system
NameSam
Duration13 days
Storm articles
Other years
2019, 2020, 2021, 2022, 2023

The 2021 Atlantic hurricane season was the third most active Atlantic hurricane season on record with 21 named storms, and the sixth consecutive year in which there was above-average tropical cyclone activity[nb 1][2] The season officially began on June 1, 2021, and ended on November 30, 2021. These dates, adopted by convention, historically describe the period in each year when most Northern Atlantic tropical cyclones form.[3] However, tropical cyclone formation is possible at any time of the year, as was the case this season, when Tropical Storm Ana formed on May 22. The season's final system, Tropical Storm Wanda, dissipated on November 7. Of the season's 21 named storms, seven became hurricanes, and four further intensified into major hurricanes.[nb 2][5] The season's most devastating storm was Hurricane Ida. It made landfall in Louisiana with maximum sustained winds of 150 mph (240 km/h), destroying coastal communities in its path; parts of the New Orleans metropolitan area were left without power for several weeks.[6] The storm caused an estimated $64.5 billion (2021 USD) in damages and resulted in at least 95 deaths.[7] Over half of those deaths occurred in New York and New Jersey, as the hurricane's remnants brought rains that triggered widespread flooding throughout that region.[6] Rains from its predecessor tropical wave also caused damaging floods and landslides across Venezuela, resulting in at least 20 deaths.[8]

This timeline documents tropical cyclone formations, strengthening, weakening, landfalls, extratropical transitions, and dissipations during the season. It includes information that was not released throughout the season, meaning that data from post-storm reviews by the National Hurricane Center, such as a storm that was not initially warned upon, has been included.

By convention, meteorologists use one time zone when issuing forecasts and making observations: Coordinated Universal Time (UTC), and also use the 24-hour clock (where 00:00 = midnight UTC).[9] The National Hurricane Center uses both UTC and the time zone where the center of the tropical cyclone is currently located. The time zones utilized (east to west) are: Greenwich, Cape Verde, Atlantic, Eastern, and Central.[10] In this timeline, all information is listed by UTC first, with the respective regional time zone included in parentheses. Additionally, figures for maximum sustained winds and position estimates are rounded to the nearest 5 units (knots, miles, or kilometers), following National Hurricane Center practice. Direct wind observations are rounded to the nearest whole number. Atmospheric pressures are listed to the nearest millibar and nearest hundredth of an inch of mercury.

Timeline

October 2021 nor'easterHurricane SamHurricane NicholasHurricane LarryHurricane IdaHurricane HenriHurricane GraceTropical Storm Fred (2021)Hurricane ElsaTropical Storm Danny (2021)Tropical Storm Claudette (2021)Saffir-Simpson scale

May

Ana as a subtropical storm on May 22

May 22

May 23

June

June 1

  • The 2021 Atlantic hurricane season officially begins.[3]

June 14

June 15

June 16

Claudette over Mississippi on June 19

June 19

June 21

June 22

June 27

June 28

June 29

July

July 1

Elsa over the Lesser Antilles as a Category 1 hurricane on July 2

July 2

July 3

July 5

July 7

July 9

August

August 11

August 12

August 13

August 14

Fred off the coast of Florida on August 15

August 15

August 16

August 17

August 18

August 19

Satellite loop of Hurricane Grace rapidly intensifying in the Bay of Campeche on August 20

August 20

August 21

August 22

August 23

Ida as a rapidly intensifying Category 4 hurricane nearing landfall in Louisiana on August 29

August 26

August 27

August 28

August 29

August 30

August 31

September

Larry as a high-end Category 3 hurricane on September 5, displaying annular characteristics

September 1

September 2

September 3

September 4

September 5

September 7

September 8

September 9

September 10

September 11

September 12

September 14

September 15

September 16

September 17

September 18

Peter in the tropical Atlantic north of the Leeward Islands on September 19

September 19

September 21

September 22

September 23

September 24

September 25

September 26

September 27

Victor in the eastern tropical Atlantic on September 30

September 28

September 29

October

October 1

October 2

October 3

October 4

October 5

October 31

November

November 1

November 7

November 30

  • The 2021 Atlantic hurricane season officially ends.[3]

See also

Notes

  1. ^ An average Atlantic hurricane season, as defined by the National Oceanic and Atmospheric Administration, has 12 tropical storms, six hurricanes and two major hurricanes.[1]
  2. ^ Hurricanes reaching Category 3 (111 miles per hour (179 km/h)) and higher on the 5-level Saffir–Simpson wind speed scale are considered major hurricanes.[4]
  3. ^ Due to the threat the developing system posed to the Gulf Coast of the United States, the National Hurricane Center initiated advisories it, designating it Potential Tropical Cyclone Three at 21:00 UTC (4:00 p.m. CDT) on June 17.[13]
  4. ^ Due to the threat the developing system posed to the countries and territories in the Lesser Antilles, the National Hurricane Center initiated advisories it, designating it Potential Tropical Cyclone Five at 21:00 UTC (5:00 p.m. AST) on June 30.[20]
  5. ^ Due to the threat the developing system posed to the countries and territories in the Lesser Antilles, the National Hurricane Center initiated advisories it, designating it Potential Tropical Cyclone Six at 21:00 UTC (5:00 p.m. AST) on August 9. [31]
  6. ^ Due to the threat the developing system posed to the countries and territories in the Leeward Islands, the National Hurricane Center initiated advisories on it, designating it Potential Tropical Cyclone Seven at 15:00 UTC (11:00 a.m. AST) on August 12.[33]
  7. ^ The remnants of Grace emerged offshore of the Pacific coast of west-central Mexico, where they reorganized as Tropical Storm Marty on August 23.[51][52]
  8. ^ The National Hurricane Center monitored Odette's remnants for possible tropical transition from September 19 to September 24. Though the cyclone did lose its frontal features, it never produced a sufficient amount of deep convection to be considered a tropical or subtropical cyclone again.[90]
  9. ^ The National Hurricane Center began monitoring Peter's remnants for possible regeneration on September 25. Although a well-defined surface low formed on September 28, the system never had the organized deep convection characteristics of a tropical cyclone.[91]

References

  1. ^ "Background Information: North Atlantic Hurricane Season". College Park, Maryland: NOAA Climate Prediction Center. Retrieved September 19, 2021.
  2. ^ Rice, Doyle (November 30, 2021). "Lots of storms but a slow finish: Busy 2021 Atlantic hurricane season ends today". USA Today. Retrieved November 30, 2021.
  3. ^ a b c "Hurricane Season Information". Frequently Asked Questions About Hurricanes. Miami, Florida: NOAA Atlantic Oceanographic and Meteorological Laboratory. June 1, 2018. Retrieved April 13, 2021.{{cite web}}: CS1 maint: url-status (link)
  4. ^ "Saffir-Simpson Hurricane Wind Scale". Miami, Florida: National Hurricane Center. Retrieved September 14, 2021.
  5. ^ Masters, Jeff (November 30, 2021). "Top-10 weirdest things about the bonkers 2021 Atlantic hurricane season". New Haven, Connecticut: Yale Climate Connections. Retrieved November 30, 2021.
  6. ^ a b Reimann, Nicholas (September 18, 2021). "Tropical Storm Odette Swirls Off East Coast With Peter's Formation Imminent As Hurricane Season Shows No Signs Of Slowing". Forbes. Retrieved September 18, 2021.
  7. ^ "Billion-Dollar Weather and Climate Disasters: Events". Asheville, North Carolina: National Centers for Environmental Information. Retrieved October 8, 2021.
  8. ^ DREF Plan of Action – Venezuela: Floods (PDF) (Report). International Federation of the Red Cross and Red Crescent Societies. September 2, 2021. Retrieved October 8, 2021 – via ReliefWeb.
  9. ^ "Understanding the Date/Time Stamps". Miami, Florida: NOAA National Hurricane Center. Retrieved July 10, 2020.{{cite web}}: CS1 maint: url-status (link)
  10. ^ "Update on National Hurricane Center Products and Services for 2020" (PDF). Miami, Florida: National Hurricane Center. April 20, 2020. Retrieved May 17, 2020.
  11. ^ a b c d Reinhart, Brad (August 3, 2021). Tropical Cyclone Report: Tropical Storm Ana (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved August 30, 2021.
  12. ^ a b c d Brown, Daniel (September 27, 2021). Tropical Cyclone Report: Tropical Storm Bill (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved September 27, 2021.
  13. ^ Pasch, Richard (June 17, 2021). "Potential Tropical Cyclone Three Advisory Number 1". nhc.noaa.gov. Miami, Florida: National Hurricane Center. Retrieved June 17, 2021.{{cite web}}: CS1 maint: url-status (link)
  14. ^ Blake, Eric (June 19, 2021). "Tropical Storm Claudette Advisory Number 7". www.nhc.noaa.gov. Miami, Florida: National Hurricane Center. Retrieved June 19, 2021.{{cite web}}: CS1 maint: url-status (link)
  15. ^ Cangialosi, John (June 19, 2021). "Tropical Storm Claudette Advisory Number 9". www.nhc.noaa.gov. Miami, Florida: National Hurricane Center. Retrieved June 19, 2021.{{cite web}}: CS1 maint: url-status (link)
  16. ^ Reinhart, Brad; Blake, Eric (June 21, 2021). "Tropical Storm Claudette Advisory Number 15". www.nhc.noaa.gov. Miami, Florida: National Hurricane Center. Retrieved June 22, 2021.{{cite web}}: CS1 maint: url-status (link)
  17. ^ Stewart, Stacy (June 21, 2021). "Tropical Storm Claudette Advisory Number 17". www.nhc.noaa.gov. Miami, Florida: National Hurricane Center. Retrieved June 22, 2021.{{cite web}}: CS1 maint: url-status (link)
  18. ^ Pasch, Richard (June 22, 2021). "Remnants Of Claudette Advisory Number 18". www.nhc.noaa.gov. Miami, Florida: National Hurricane Center. Retrieved June 22, 2021.{{cite web}}: CS1 maint: url-status (link)
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  20. ^ Beven, Jack (June 30, 2021). Potential Tropical Cyclone Five Advisory Number 1 (Report). Miami, Florida: National Hurricane Center. Retrieved June 30, 2021.
  21. ^ Papin, Philippe; Brown, Daniel (July 1, 2021). Tropical Depression Five Advisory Number 2 (Report). Miami, Florida: National Hurricane Center. Retrieved July 1, 2021.
  22. ^ Pasch, Richard (July 1, 2021). Tropical Storm Elsa Advisory Number 3 (Report). Miami, Florida: National Hurricane Center. Retrieved July 1, 2021.
  23. ^ Beven, Jack; Latto, Andy; Zelinsky, David (July 2, 2021). Hurricane Elsa Tropical Cyclone Update (Report). Miami, Florida: National Hurricane Center. Retrieved July 2, 2021.
  24. ^ Beven, Jack (July 2, 2021). Hurricane Elsa Advisory Number 10 (Report). Miami, Florida: National Hurricane Center. Retrieved July 12, 2021.
  25. ^ Beven, Jack (July 3, 2021). Tropical Storm Elsa Advisory Number 13 (Report). Miami, Florida: National Hurricane Center. Retrieved July 3, 2021.
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  29. ^ Pasch, Richard (July 7, 2021). Tropical Storm Elsa Advisory Number 30 (Report). Miami, Florida: National Hurricane Center. Retrieved July 7, 2021.
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  31. ^ Papin, Philippe; Brown, Daniel (August 9, 2021). Potential Tropical Cyclone Six Advisory Number 1 (Report). Miami, Florida: National Hurricane Center. Retrieved August 9, 2021.
  32. ^ a b c d e f g h i j k l Berg, Robbie (November 19, 2021). Tropical Cyclone Report: Tropical Storm Fred (PDF) (Report). Miami, Florida: National Hurricane Center. Retrieved November 21, 2021.
  33. ^ Berg, Robbie (August 13, 2021). Potential Tropical Cyclone Seven Advisory Number 1 (Report). Miami, Florida: National Hurricane Center. Retrieved August 13, 2021.
  34. ^ Berg, Robbie (August 13, 2021). Tropical Depression Seven Advisory Number 2 (Report). Miami, Florida: National Hurricane Center. Retrieved August 13, 2021.
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  42. ^ Zelinsky, David (August 19, 2021). Tropical Storm Grace Advisory Number 25 (Report). Miami, Florida: National Hurricane Center. Retrieved August 19, 2021.
  43. ^ Reinhart, Brad; Cangialosi, John (August 20, 2021). Hurricane Grace Intermediate Advisory Number 28 (Report). Miami, Florida: National Hurricane Center. Retrieved August 20, 2021.
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  45. ^ Hurricane Grace Advisory Number 31 (Report). Miami, Florida: National Hurricane Center. August 21, 2021. Retrieved August 21, 2021.
  46. ^ Hurricane Grace Intermediate Advisory Number 31A (Report). Miami, Florida: National Hurricane Center. August 21, 2021. Retrieved August 21, 2021.
  47. ^ Hurricane Grace Advisory Number 32 (Report). Miami, Florida: National Hurricane Center. August 21, 2021. Retrieved August 21, 2021.
  48. ^ Hurricane Grace Intermediate Advisory Number 32A (Report). Miami, Florida: National Hurricane Center. August 21, 2021. Retrieved August 21, 2021.
  49. ^ Tropical Storm Grace Advisory Number 33 (Report). Miami, Florida: National Hurricane Center. August 21, 2021. Retrieved August 21, 2021.
  50. ^ Hurricane Henri Advisory Number 23 (Report). Miami, Florida: National Hurricane Center. August 21, 2021. Retrieved August 21, 2021.
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  53. ^ Remnants of Grace Advisory Number 34 (Report). Miami, Florida: National Hurricane Center. August 21, 2021. Retrieved August 21, 2021.
  54. ^ Hurricane Henri Advisory Number 26 (Report). Miami, Florida: National Hurricane Center. August 22, 2021. Retrieved August 22, 2021.
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  111. ^ Berg, Robbie (October 1, 2021). Hurricane Sam Advisory Number 35 (Report). Miami, Florida: National Hurricane Center. Retrieved October 2, 2021.
  112. ^ Blake, Eric (October 2, 2021). Hurricane Sam Advisory Number 41 (Report). Miami, Florida: National Hurricane Center. Retrieved October 2, 2021.
  113. ^ Stewart, Stacy (October 3, 2021). Hurricane Sam Advisory Number 43 (Report). Miami, Florida: National Hurricane Center. Retrieved October 3, 2021.
  114. ^ Brown, Daniel (October 4, 2021). Hurricane Sam Advisory Number 49 (Report). Miami, Florida: National Hurricane Center. Retrieved October 4, 2021.
  115. ^ Stewart, Stacy (October 5, 2021). Post-Tropical Cyclone Sam Advisory Number 51 (Report). Miami, Florida: National Hurricane Center. Retrieved October 5, 2021.
  116. ^ Masters, Jeff; Henson, Bob (October 31, 2021). "Subtropical Storm Wanda forms, exhausting the Atlantic list of storms". New Haven, Connecticut: Yale Climate Connections. Retrieved October 31, 2021.
  117. ^ Cangialosi, John (October 30, 2021). Subtropical Storm Wanda Advisory Number 1 (Report). Miami Florida: National Hurricane Center. Retrieved October 31, 2021.
  118. ^ Stewert, Stacy (November 1, 2021). "Tropical Storm Wanda Advisory Number 8". Miami, Florida: National Hurricane Center. Retrieved November 1, 2021.
  119. ^ Papin, Philippe (November 7, 2021). Post-Tropical Cyclone Wanda Advisory Number 31 (Report). Miami, Florida: National Hurricane Center. Retrieved November 7, 2021..
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