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05:49 19:04
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Hurricane Season 2021

Hurricane Season 2021 Predictions

An above average activity expected for the 2021 hurricane season
 

Colorado State University (CSU) has decreased the total number of storms expected for the 2021 Atlantic Hurricane Season. They are still predicting an above normal hurricane season given the sea surface temperatures and weaker than normal vertical wind shear. 

 

The following is the adjusted prediction from CSU. 

  

ATLANTIC BASIN SEASONAL HURRICANE FORECAST FOR 2021

Forecast Parameter and 1981-2010 Average (in parentheses)Issue Date 5 August 2020
Named Storms (NS) (14.4)18
Hurricanes (H) (7.2)8
Major Hurricanes (MH) (3.2)4

By: CSU University Communications Staff

 

 

2021 Atlantic Storm Names

Atlantic Storm Names

STORM NAME

DATES ACTIVE

STAGE

ANA

May 22 - 23

TS

BILL

Jun 14 - 15

TS 

CLAUDETTE

Jun 19 -23

TS

DANNY

Jun 27 - 29

TS

ELSA

Jun 30 - Jul 9

H

FRED

Aug 11 - 17

TS

GRACE

Aug 13 - 21

MH

HENRI 

Aug 15 -23

H

IDA

Aug 26 - Sep 1

MH

KATE

Aug 28 - Sep 1

TS

JULIAN

Aug 28 - 30

TS

LARRY

Aug 31 - Sep 11

MH

MINDY

Sep 8 - 9

TS

NICHOLAS

Sep 12 - 15

H

ODETTE

Sep 17 - 18

TS

PETER

Sep 19 - 22

TS

ROSE

Sep 19 - 22

TS

SAM

Sep 22 - Oct 5

MH

TERESA

Sep 24 - 25

STS

VICTOR

Sep 29 - Oct 4

TS

WANDA

Oct 30 - Nov 7

TS

TD - TROPICAL DEPRESSION

TS - TROPICAL STORM

STS - SUB-TROPICAL STORM

H - HURRICANE

MH - MAYOR HURRICANE

 

 

2021 Atlantic hurricane season summary:

 

The 2021 Atlantic hurricane season officially ran from June 1 to November 30.  A total of 21 tropical depressions formed, all of which reached at least tropical or subtropical intensity. 

The season ranks as the third-most active of all time in the Atlantic basin, behind only 2005 and 2020

Consequently, the 2021 Atlantic hurricane season was the third on record to exhaust its naming list. Nine of the systems lasted for two days or less, tied with 2007 for the most since the NHC began monitoring subtropical systems in 1968

Although the season was highly active in terms of the number of named storms, seven of those tropical or subtropical systems intensified into a hurricane and four of those became a major hurricane, which is near-average and just slightly above-average, respectively. Nonetheless, 2021 marked the record sixth consecutive above-average season in the Atlantic.  

The ongoing warm Atlantic multidecadal oscillation, which began in 1995, contributed to the season's high level of activity, as it led to above-average sea surface temperatures in the Atlantic basin. 

Other factors included the presence of a La Niña and abnormally heavy West African Monsoon precipitation.