Atlantic Summary for November 2021
Monthly Summary

000 ABNT30 KNHC 011201 TWSAT Monthly Tropical Weather Summary NWS National Hurricane Center Miami FL 800 AM EDT Mon Nov 1 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: One subtropical cyclone, Subtropical Storm Wanda, formed in the Atlantic basin during October, and was ongoing at the end of the month over the north-central portion of the Atlantic basin. In addition, both Hurricane Sam and Tropical Storm Victor continued from the end of September through the first few days of October. Based on a 30-year climatology (1991-2020), two to three named storms typically form in October, with one of them becoming a hurricane. A major hurricane tends to form in October every one to two years. In terms of Accumulated Cyclone Energy (ACE), which measures the strength and duration of tropical storms and hurricanes, activity in the basin so far in 2021 has been above normal, about 20 percent above the long-term (1991-2020) mean to date. The 21 named storms through the end of October is above the 30-year (1991-2020) average of 13 to 14 named storms by the end of October. 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) --------------------------------------------------- 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 11-18 Aug 65 MH Grace 13-21 Aug 125 H Henri 16-23 Aug 75 MH Ida 26 Aug- 2 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 STS Wanda 31 Oct- 50 --------------------------------------------------- * Denotes a storm for which the post-storm analysis is complete. $$ Hurricane Specialist Unit
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