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The 2021 Atlantic hurricane season was the most active hurricane season since records began in 1851. 44 depressions, 35 named storms, 19 hurricanes and 13 major hurricanes developed during 2021. Despite the record active season, not many fatalities were recorded.

Seasonal forecasts

Source Date Named

storms

Hurricanes Major

hurricanes

TSR December 1, 2020 18 10 5
WSI December 14, 2020 18 8 4
CSU April 1, 2021 21 12 7
TSR April 15, 2021 20 11 7
TWC April 20, 2021 25 10 5
UKMO May 24, 2021 17 6 2
NOAA May 24, 2021 18-24 11-16 6-9
FSU COAPS May 30, 2021 25 12 8
CSU June 1, 2021 24 12 6
TSR June 6, 2021 25 12 7
NOAA August 6, 2021 24-30 10-17 9-13
WSI August 20, 2021 28 15 12
TSR September 10, 2021 29 16 9
–––––––––––––––––––––––––––––––––––––––––––––––––––––––
Actual activity 35 19 13

Storms

Hurricane Ana

Category 2 hurricane (SSHWS)
Counterclockwise vortex Ana 2021 track.png
Duration May 29 – June 2
Peak intensity 105 mph (165 km/h) (1-min)  985 mbar (hPa)

Hurricane Bill

Category 5 hurricane (SSHWS)
Counterclockwise vortex Bill 2021 track.png
Duration June 27 – July 5
Peak intensity 195 mph (315 km/h) (1-min)  881 mbar (hPa)
Bill recorded the lowest air pressure of the season.

Hurricane Christobal

Category 1 hurricane (SSHWS)
Counterclockwise vortex Christobal 2021 track.png
Duration July 9 – July 12
Peak intensity 80 mph (130 km/h) (1-min)  980 mbar (hPa)

Tropical Storm Danny

Tropical storm (SSHWS)
Counterclockwise vortex Danny 2021 track.png
Duration July 19 – July 26
Peak intensity 65 mph (100 km/h) (1-min)  994 mbar (hPa)

Tropical Storm Erika

Tropical storm (SSHWS)
Counterclockwise vortex Erika 2021 track.png
Duration July 20 – July 24
Peak intensity 70 mph (110 km/h) (1-min)  992 mbar (hPa)

Tropical Storm Fred

Tropical storm (SSHWS)
Counterclockwise vortex Fred 2021 track.png
Duration July 29 – August 1
Peak intensity 50 mph (85 km/h) (1-min)  1002 mbar (hPa)

Tropical Depression Seven

Tropical depression (SSHWS)
Counterclockwise vortex Seven 2021 track.png
Duration July 31 – August 1
Peak intensity 35 mph (55 km/h) (1-min)  1009 mbar (hPa)

Main article: Tropical Depression Seven (2021)

Tropical Depression Eight

Tropical depression (SSHWS)
Counterclockwise vortex Eight 2021 track.png
Duration August 3 – August 3
Peak intensity 35 mph (55 km/h) (1-min)  1014 mbar (hPa)

Tropical Depression Nine

Tropical depression (SSHWS)
Counterclockwise vortex Nine 2021 track.png
Duration August 4 – August 5
Peak intensity 35 mph (55 km/h) (1-min)  1007 mbar (hPa)

Tropical Storm Grace

Tropical storm (SSHWS)
Counterclockwise vortex Grace 2021 track.png
Duration August 8 – August 13
Peak intensity 65 mph (100 km/h) (1-min)  999 mbar (hPa)

Tropical Storm Henri

Tropical storm (SSHWS)
Counterclockwise vortex Henri 2021 track.png
Duration August 11 – August 13
Peak intensity 40 mph (65 km/h) (1-min)  1003 mbar (hPa)

Hurricane Ida

Category 1 hurricane (SSHWS)
Counterclockwise vortex Ida 2021 track.png
Duration August 14 – August 26
Peak intensity 75 mph (120 km/h) (1-min)  995 mbar (hPa)

Hurricane Julian

Category 3 hurricane (SSHWS)
Counterclockwise vortex Joaquin 2021 track.png
Duration August 16 – August 22
Peak intensity 125 mph (205 km/h) (1-min)  949 mbar (hPa)

Earliest tenth storm of the season, beating Jose in 2005.

Hurricane Kate

Category 5 hurricane (SSHWS)
Counterclockwise vortex Kate 2021 track.png
Duration August 18 – August 31
Peak intensity 175 mph (280 km/h) (1-min)  915 mbar (hPa)

Earliest 11th storm of the season, beating Katrina in 2005.

Hurricane Larry

Category 5 hurricane (SSHWS)
Counterclockwise vortex Larry 2021 track.png
Duration August 20 – August 23
Peak intensity 160 mph (260 km/h) (1-min)  920 mbar (hPa)

Earliest 12th storm of the season, beating Luis of 1995.

Hurricane Mindy

Category 5 hurricane (SSHWS)
Counterclockwise vortex Mindy 2021 track.png
Duration August 24 – August 27
Peak intensity 165 mph (270 km/h) (1-min)  917 mbar (hPa)
Earliest 13th storm of the season, beating Maria and Lee of 2005 and 2011, respectively.

Hurricane Nicholas

Category 4 hurricane (SSHWS)
Counterclockwise vortex Nicholas 2021 track.png
Duration August 29 – September 9
Peak intensity 145 mph (230 km/h) (1-min)  945 mbar (hPa)

Earliest 14th storm of the season, beating Nate of 2005.

Hurricane Odette

Category 3 hurricane (SSHWS)
Counterclockwise vortex Odette 2021 track.png
Duration August 31 – September 5
Peak intensity 115 mph (185 km/h) (1-min)  966 mbar (hPa)

Earliest 15th storm of the season, beating Ophelia and Nate of 2005 and 2011, respectively.

Tropical Storm Peter

Tropical storm (SSHWS)
Counterclockwise vortex Peter 2021 track.png
Duration September 2 – September 17
Peak intensity 70 mph (110 km/h) (1-min)  996 mbar (hPa)

Earliest 16th storm of the season, beating Philippe of 2005.

Tropical Storm Rose

Tropical storm (SSHWS)
Counterclockwise vortex Rose 2021 track.png
Duration September 3 – September 6
Peak intensity 60 mph (95 km/h) (1-min)  1000 mbar (hPa)

Tropical Storm Sam

Tropical storm (SSHWS)
Counterclockwise vortex Sam 2021 track.png
Duration September 4 – September 7
Peak intensity 70 mph (110 km/h) (1-min)  984 mbar (hPa)

Tropical Depression Twenty-Two

Tropical depression (SSHWS)
Counterclockwise vortex Twenty-two 2021 track.png
Duration September 5 – September 6
Peak intensity 30 mph (45 km/h) (1-min)  1010 mbar (hPa)

Tropical Depression Twenty-Three

Tropical depression (SSHWS)
Counterclockwise vortex Twenty-three 2021 track.png
Duration September 6 – September 8
Peak intensity 35 mph (55 km/h) (1-min)  1007 mbar (hPa)

Tropical Depression Twenty-Four

Tropical depression (SSHWS)
Counterclockwise vortex Twenty-four 2021 track.png
Duration September 8 – September 9
Peak intensity 35 mph (55 km/h) (1-min)  1010 mbar (hPa)

Tropical Storm Teresa

Tropical storm (SSHWS)
Counterclockwise vortex 150px
Duration September 9 – September 12
Peak intensity 60 mph (95 km/h) (1-min)  999 mbar (hPa)

Tropical Storm Victor

Tropical storm (SSHWS)
Counterclockwise vortex 150px
Duration September 10 – September 13
Peak intensity 40 mph (65 km/h) (1-min)  1005 mbar (hPa)

Tropical Storm Wanda

Tropical storm (SSHWS)
Counterclockwise vortex 150px
Duration September 12 – September 16
Peak intensity 60 mph (95 km/h) (1-min)  997 mbar (hPa)

Hurricane Alpha

Category 2 hurricane (SSHWS)
Counterclockwise vortex 150px
Duration September 14 – September 21
Peak intensity 110 mph (175 km/h) (1-min)  979 mbar (hPa)

Hurricane Beta

Category 4 hurricane (SSHWS)
Counterclockwise vortex Beta 2021 track.png
Duration September 19 – September 26
Peak intensity 155 mph (250 km/h) (1-min)  935 mbar (hPa)

Hurricane Gamma

Category 5 hurricane (SSHWS)
Counterclockwise vortex 150px
Duration September 23 – October 2
Peak intensity 160 mph (260 km/h) (1-min)  924 mbar (hPa)

Hurricane Delta

Category 3 hurricane (SSHWS)
Counterclockwise vortex 150px
Duration September 27 – October 3
Peak intensity 115 mph (185 km/h) (1-min)  954 mbar (hPa)

Hurricane Epsilon

Category 2 hurricane (SSHWS)
Counterclockwise vortex 150px
Duration October 1 – October 5
Peak intensity 105 mph (165 km/h) (1-min)  976 mbar (hPa)

Hurricane Zeta

Category 4 hurricane (SSHWS)
Counterclockwise vortex 150px
Duration October 3 – October 11
Peak intensity 130 mph (215 km/h) (1-min)  951 mbar (hPa)

Tropical Storm Eta

Tropical storm (SSHWS)
Counterclockwise vortex 150px
Duration October 8 – October 12
Peak intensity 70 mph (110 km/h) (1-min)  988 mbar (hPa)

Tropical Storm Theta

Tropical storm (SSHWS)
Counterclockwise vortex 150px
Duration October 14 – October 20
Peak intensity 65 mph (100 km/h) (1-min)  994 mbar (hPa)

Tropical Storm Iota

Tropical storm (SSHWS)
Counterclockwise vortex 150px
Duration October 19 – October 23
Peak intensity 50 mph (85 km/h) (1-min)  998 mbar (hPa)

Tropical Depression Thirty-Seven

Tropical depression (SSHWS)
Counterclockwise vortex 150px
Duration October 28 – October 31
Peak intensity 35 mph (55 km/h) (1-min)  1007 mbar (hPa)

Tropical Depression Thirty-Eight

Tropical depression (SSHWS)
Counterclockwise vortex 150px
Duration November 3 – November 5
Peak intensity 35 mph (55 km/h) (1-min)  1008 mbar (hPa)

Tropical Depression Thirty-Nine

Tropical depression (SSHWS)
Counterclockwise vortex 150px
Duration November 10 – November 13
Peak intensity 35 mph (55 km/h) (1-min)  1013 mbar (hPa)

Hurricane Kappa

Category 1 hurricane (SSHWS)
Counterclockwise vortex 150px
Duration November 16 – November 20
Peak intensity 85 mph (140 km/h) (1-min)  975 mbar (hPa)

Tropical Storm Lambda

Tropical storm (SSHWS)
Counterclockwise vortex 150px
Duration November 18 – November 21
Peak intensity 60 mph (95 km/h) (1-min)  997 mbar (hPa)

Hurricane Mu

Category 5 hurricane (SSHWS)
Counterclockwise vortex 150px
Duration November 24 – November 30
Peak intensity 160 mph (260 km/h) (1-min)  929 mbar (hPa)

Hurricane Nu

Category 3 hurricane (SSHWS)
Counterclockwise vortex 150px
Duration November 28 – December 5
Peak intensity 125 mph (205 km/h) (1-min)  945 mbar (hPa)

Tropical Storm Xi

Tropical storm (SSHWS)
Counterclockwise vortex 150px
Duration December 16 – December 20
Peak intensity 70 mph (110 km/h) (1-min)  998 mbar (hPa)

Accumulated Cyclone Energy

ACE (104 kt2) – Storm:
1 66.8325 Kate 12 3.2475 Grace
2 30.5075 Nicholas 13 2.2225 Fred
3 21.2675 Bill 14 0.2450 Henri
4 16.6050 Joaquin 15 0.00 Storm
5 13.7425 Ida 16 0.00 Storm
6 13.075 Mindy 17 0.00 Storm
7 11.81 Larry 18 0.00 Storm
8 9.7425 Peter 19 0.00 Storm
9 9.09 Odette 20 0.00 Storm
10 5.7650 Ana 21 0.00 Storm
11 5.0270 Danny 22 0.00 Storm
12 4.09 Christobal 23 0.00 Storm
13 4.06 Erika 24 0.00 Storm
Total=217.3295

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