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Monthly Atlantic Tropical Weather 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
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            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