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ABNT30 KNHC 011230
TWSAT

Monthly Tropical Weather Summary
NWS National Hurricane Center Miami FL
800 AM EDT Wed Dec 1 2021

For the North Atlantic...Caribbean Sea and the Gulf of Mexico:

No tropical cyclones formed in the basin during November. However, Tropical Storm Wanda continued from the end of October through the first seven days of November. Based on a 30-year climatology (1991-2020), a tropical storm forms in November every one to two years.

Overall, the 2021 Atlantic hurricane season featured above normal activity. Twenty-one named storms formed, of which seven became hurricanes and four became major hurricanes - category 3 or higher on the Saffir-Simpson Hurricane Wind Scale. This compares to the long-term averages of 14 named storms, 7 hurricanes, and 3 major hurricanes. In terms of Accumulated Cyclone Energy (ACE), which measures the strength and duration of tropical storms and hurricanes, activity in the basin in 2021 was also above normal, about 20 percent above the long-term (1991-2020) mean.

Reports on individual cyclones, when completed, are available at the National Hurricane Center website at www.hurricanes.gov/data/tcr/index.php?season=2021&basin=atl

Summary Table

Name Dates Max Wind (mph)
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TS Ana 22-23 May 45* TS Bill 14-15 Jun 65* TS Claudette 19-22 Jun 45 TS Danny 27-29 Jun 45* H Elsa 1- 9 Jul 85 TS Fred 11-17 Aug 65* MH Grace 13-21 Aug 125 H Henri 16-23 Aug 75 MH Ida 26 Aug- 1 Sep 150 TS Kate 28 Aug- 1 Sep 45 TS Julian 28-30 Aug 60* MH Larry 31 Aug-11 Sep 125 TS Mindy 8-10 Sep 45 H Nicholas 12-16 Sep 75 TS Odette 17-18 Sep 45* TS Peter 19-22 Sep 50 TS Rose 19-23 Sep 50 MH Sam 22 Sep- 5 Oct 150 STS Teresa 24-25 Sep 45 TS Victor 29 Sep- 4 Oct 65 TS Wanda 31 Oct- 7 Nov 50
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* Denotes a storm for which the post-storm analysis is complete.

$$ Hurricane Specialist Unit

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