Atlantic Summary for October 2021
Monthly Summary

000 ABNT30 KNHC 011119 TWSAT Monthly Tropical Weather Summary NWS National Hurricane Center Miami FL 800 AM EDT Fri Oct 1 2021 For the North Atlantic...Caribbean Sea and the Gulf of Mexico: Tropical cyclone activity in the Atlantic basin during September was above normal in terms of the numbers of named storms, and major hurricanes. Nine named storms formed in the Atlantic basin in September, with three of them becoming hurricanes, and two of those becoming major hurricanes. Larry was a long-lived category 3 hurricane that ultimately made landfall in Newfoundland as a Category 1 hurricane, while Nicholas made landfall near Sargent Beach, Texas, as a Category 1 hurricane. Based on a 30-year climatology (1991-2020), four named storms typically develop in September, with three of them becoming hurricanes, and one of those becoming a major hurricane. 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 also been above normal, almost 50 percent above the long-term mean. The 20 named storms through the end of September is well above the 30-year (1991-2020) average of 9 to 10 named storms by the end of September. Reports on individual cyclones, when completed, are available at the National Hurricane Center website at 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 28-29 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 29-30 Aug 60 MH Larry 31 Aug-11 Sep 125 TS Mindy 8-10 Sep 45 H Nicholas 12-17 Sep 75 TS Odette 17-18 Sep 45 TS Peter 18-22 Sep 50 TS Rose 19-23 Sep 50 MH Sam 22 Sep- 150 STS Teresa 24-25 Sep 45 TS Victor 29 Sep- 60 --------------------------------------------------- * Denotes a storm for which the post-storm analysis is complete. $$ Hurricane Specialist Unit
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