000
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