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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Sam: 2021 North Atlantic

Sam reached 135 kt (250 km/h, 155 mph) (C4) in the 2021 North Atlantic season, from 2021-09-22 to 2021-10-07, with track, wind and pressure and 54.0 ACE.

Data as of . Last revised (2026-10-17).

Key Facts

  • Sam was a category 4 at its peak in the 2021 North Atlantic season.
  • Peak maximum sustained wind was 135 kt (250 km/h, 155 mph), reached on 26 September 2021, and the lowest pressure was 927 hPa.
  • The track runs from 22 September 2021 to 7 October 2021 with 117 six hourly positions.
  • Sam accumulated 54.0 ACE.
  • No landfall is recorded in the track.

Track

22 September 2021 to 7 October 2021
Track of Sam 2021, coloured by intensity Sam formed on 22 September 2021 and its track is coloured by category at each six hourly step, peaking as a category 4.
Sam formed on 22 September 2021 and its track is coloured by category at each six hourly step, peaking as a category 4. Made with Natural Earth and IBTrACS.
Track of Sam 2021, coloured by intensity: tracks drawn on the map
StormFirst position (lat, lon)Last position (lat, lon)Track points
Sam10.0, -33.158.1, -22.3117

Wind

Knots, six hourly
Maximum sustained wind of Sam Maximum sustained wind in knots every six hours, from 30 kt (56 km/h, 35 mph) at the start to a peak of 135 kt (250 km/h, 155 mph). 0 38 75 113 150 09-2209-2409-2609-2809-3010-0210-0410-05
Maximum sustained wind in knots every six hours, from 30 kt (56 km/h, 35 mph) at the start to a peak of 135 kt (250 km/h, 155 mph).
Maximum sustained wind of Sam
Time (UTC)Wind (kt)
2021-09-22T18:00:00Z30 kt
2021-09-22T21:00:00Z30 kt
2021-09-23T00:00:00Z30 kt
2021-09-23T03:00:00Z33 kt
2021-09-23T06:00:00Z35 kt
2021-09-23T09:00:00Z40 kt
2021-09-23T12:00:00Z45 kt
2021-09-23T15:00:00Z48 kt
2021-09-23T18:00:00Z50 kt
2021-09-23T21:00:00Z55 kt
2021-09-24T00:00:00Z60 kt
2021-09-24T03:00:00Z63 kt
2021-09-24T06:00:00Z65 kt
2021-09-24T09:00:00Z65 kt
2021-09-24T12:00:00Z65 kt
2021-09-24T15:00:00Z68 kt
2021-09-24T18:00:00Z70 kt
2021-09-24T21:00:00Z78 kt
2021-09-25T00:00:00Z85 kt
2021-09-25T03:00:00Z90 kt
2021-09-25T06:00:00Z95 kt
2021-09-25T09:00:00Z100 kt
2021-09-25T12:00:00Z105 kt
2021-09-25T15:00:00Z110 kt
2021-09-25T18:00:00Z115 kt
2021-09-25T21:00:00Z123 kt
2021-09-26T00:00:00Z130 kt
2021-09-26T03:00:00Z130 kt
2021-09-26T06:00:00Z130 kt
2021-09-26T09:00:00Z130 kt
2021-09-26T12:00:00Z130 kt
2021-09-26T15:00:00Z133 kt
2021-09-26T18:00:00Z135 kt
2021-09-26T21:00:00Z133 kt
2021-09-27T00:00:00Z130 kt
2021-09-27T03:00:00Z123 kt
2021-09-27T06:00:00Z115 kt
2021-09-27T09:00:00Z110 kt
2021-09-27T12:00:00Z105 kt
2021-09-27T15:00:00Z105 kt
2021-09-27T18:00:00Z105 kt
2021-09-27T21:00:00Z105 kt
2021-09-28T00:00:00Z105 kt
2021-09-28T03:00:00Z110 kt
2021-09-28T06:00:00Z115 kt
2021-09-28T09:00:00Z115 kt
2021-09-28T12:00:00Z115 kt
2021-09-28T15:00:00Z115 kt
2021-09-28T18:00:00Z115 kt
2021-09-28T21:00:00Z115 kt
2021-09-29T00:00:00Z115 kt
2021-09-29T03:00:00Z115 kt
2021-09-29T06:00:00Z115 kt
2021-09-29T09:00:00Z115 kt
2021-09-29T12:00:00Z115 kt
2021-09-29T15:00:00Z115 kt
2021-09-29T18:00:00Z115 kt
2021-09-29T21:00:00Z120 kt
2021-09-30T00:00:00Z125 kt
2021-09-30T03:00:00Z125 kt
2021-09-30T06:00:00Z125 kt
2021-09-30T09:00:00Z125 kt
2021-09-30T12:00:00Z125 kt
2021-09-30T15:00:00Z125 kt
2021-09-30T18:00:00Z125 kt
2021-09-30T21:00:00Z125 kt
2021-10-01T00:00:00Z125 kt
2021-10-01T03:00:00Z128 kt
2021-10-01T06:00:00Z130 kt
2021-10-01T09:00:00Z130 kt
2021-10-01T12:00:00Z130 kt
2021-10-01T15:00:00Z130 kt
2021-10-01T18:00:00Z130 kt
2021-10-01T21:00:00Z128 kt
2021-10-02T00:00:00Z125 kt
2021-10-02T03:00:00Z123 kt
2021-10-02T06:00:00Z120 kt
2021-10-02T09:00:00Z118 kt
2021-10-02T12:00:00Z115 kt
2021-10-02T15:00:00Z113 kt
2021-10-02T18:00:00Z110 kt
2021-10-02T21:00:00Z105 kt
2021-10-03T00:00:00Z100 kt
2021-10-03T03:00:00Z95 kt
2021-10-03T06:00:00Z90 kt
2021-10-03T09:00:00Z88 kt
2021-10-03T12:00:00Z85 kt
2021-10-03T15:00:00Z85 kt
2021-10-03T18:00:00Z85 kt
2021-10-03T21:00:00Z88 kt
2021-10-04T00:00:00Z90 kt
2021-10-04T03:00:00Z90 kt
2021-10-04T06:00:00Z90 kt
2021-10-04T09:00:00Z88 kt
2021-10-04T12:00:00Z85 kt
2021-10-04T15:00:00Z83 kt
2021-10-04T18:00:00Z80 kt
2021-10-04T21:00:00Z78 kt
2021-10-05T00:00:00Z75 kt
2021-10-05T03:00:00Z73 kt
2021-10-05T06:00:00Z70 kt
2021-10-05T09:00:00Z68 kt
2021-10-05T12:00:00Z65 kt
2021-10-05T15:00:00Z65 kt
2021-10-05T18:00:00Z65 kt
2021-10-05T21:00:00Z63 kt
2021-10-06T00:00:00Z60 kt
2021-10-06T03:00:00Z58 kt
2021-10-06T06:00:00Z55 kt
2021-10-06T09:00:00Z53 kt
2021-10-06T12:00:00Z50 kt
2021-10-06T15:00:00Z48 kt
2021-10-06T18:00:00Z45 kt
2021-10-06T21:00:00Z45 kt
2021-10-07T00:00:00Z45 kt
2021-10-07T03:00:00Z43 kt
2021-10-07T06:00:00Z40 kt

Pressure

hPa, six hourly
Central pressure of Sam Central pressure in hectopascals every six hours, falling to 927 hPa at the lowest. 920 990 1060 1130 1200 09-2209-2409-2609-2809-3010-0210-0410-05
Central pressure in hectopascals every six hours, falling to 927 hPa at the lowest.
Central pressure of Sam
Time (UTC)Pressure (hPa)
2021-09-22T18:00:00Z1008 hPa
2021-09-22T21:00:00Z1008 hPa
2021-09-23T00:00:00Z1008 hPa
2021-09-23T03:00:00Z1007 hPa
2021-09-23T06:00:00Z1006 hPa
2021-09-23T09:00:00Z1005 hPa
2021-09-23T12:00:00Z1003 hPa
2021-09-23T15:00:00Z1002 hPa
2021-09-23T18:00:00Z1000 hPa
2021-09-23T21:00:00Z999 hPa
2021-09-24T00:00:00Z997 hPa
2021-09-24T03:00:00Z995 hPa
2021-09-24T06:00:00Z993 hPa
2021-09-24T09:00:00Z993 hPa
2021-09-24T12:00:00Z993 hPa
2021-09-24T15:00:00Z991 hPa
2021-09-24T18:00:00Z989 hPa
2021-09-24T21:00:00Z986 hPa
2021-09-25T00:00:00Z982 hPa
2021-09-25T03:00:00Z978 hPa
2021-09-25T06:00:00Z973 hPa
2021-09-25T09:00:00Z967 hPa
2021-09-25T12:00:00Z960 hPa
2021-09-25T15:00:00Z955 hPa
2021-09-25T18:00:00Z950 hPa
2021-09-25T21:00:00Z947 hPa
2021-09-26T00:00:00Z943 hPa
2021-09-26T03:00:00Z943 hPa
2021-09-26T06:00:00Z943 hPa
2021-09-26T09:00:00Z941 hPa
2021-09-26T12:00:00Z939 hPa
2021-09-26T15:00:00Z933 hPa
2021-09-26T18:00:00Z927 hPa
2021-09-26T21:00:00Z934 hPa
2021-09-27T00:00:00Z940 hPa
2021-09-27T03:00:00Z944 hPa
2021-09-27T06:00:00Z948 hPa
2021-09-27T09:00:00Z952 hPa
2021-09-27T12:00:00Z955 hPa
2021-09-27T15:00:00Z957 hPa
2021-09-27T18:00:00Z958 hPa
2021-09-27T21:00:00Z957 hPa
2021-09-28T00:00:00Z955 hPa
2021-09-28T03:00:00Z954 hPa
2021-09-28T06:00:00Z952 hPa
2021-09-28T09:00:00Z952 hPa
2021-09-28T12:00:00Z952 hPa
2021-09-28T15:00:00Z950 hPa
2021-09-28T18:00:00Z947 hPa
2021-09-28T21:00:00Z947 hPa
2021-09-29T00:00:00Z947 hPa
2021-09-29T03:00:00Z950 hPa
2021-09-29T06:00:00Z952 hPa
2021-09-29T09:00:00Z952 hPa
2021-09-29T12:00:00Z952 hPa
2021-09-29T15:00:00Z949 hPa
2021-09-29T18:00:00Z945 hPa
2021-09-29T21:00:00Z943 hPa
2021-09-30T00:00:00Z940 hPa
2021-09-30T03:00:00Z939 hPa
2021-09-30T06:00:00Z937 hPa
2021-09-30T09:00:00Z937 hPa
2021-09-30T12:00:00Z937 hPa
2021-09-30T15:00:00Z939 hPa
2021-09-30T18:00:00Z941 hPa
2021-09-30T21:00:00Z940 hPa
2021-10-01T00:00:00Z938 hPa
2021-10-01T03:00:00Z937 hPa
2021-10-01T06:00:00Z936 hPa
2021-10-01T09:00:00Z936 hPa
2021-10-01T12:00:00Z936 hPa
2021-10-01T15:00:00Z937 hPa
2021-10-01T18:00:00Z937 hPa
2021-10-01T21:00:00Z939 hPa
2021-10-02T00:00:00Z940 hPa
2021-10-02T03:00:00Z943 hPa
2021-10-02T06:00:00Z945 hPa
2021-10-02T09:00:00Z947 hPa
2021-10-02T12:00:00Z948 hPa
2021-10-02T15:00:00Z949 hPa
2021-10-02T18:00:00Z950 hPa
2021-10-02T21:00:00Z952 hPa
2021-10-03T00:00:00Z954 hPa
2021-10-03T03:00:00Z957 hPa
2021-10-03T06:00:00Z960 hPa
2021-10-03T09:00:00Z962 hPa
2021-10-03T12:00:00Z964 hPa
2021-10-03T15:00:00Z964 hPa
2021-10-03T18:00:00Z964 hPa
2021-10-03T21:00:00Z961 hPa
2021-10-04T00:00:00Z957 hPa
2021-10-04T03:00:00Z957 hPa
2021-10-04T06:00:00Z957 hPa
2021-10-04T09:00:00Z959 hPa
2021-10-04T12:00:00Z960 hPa
2021-10-04T15:00:00Z963 hPa
2021-10-04T18:00:00Z965 hPa
2021-10-04T21:00:00Z965 hPa
2021-10-05T00:00:00Z965 hPa
2021-10-05T03:00:00Z965 hPa
2021-10-05T06:00:00Z965 hPa
2021-10-05T09:00:00Z966 hPa
2021-10-05T12:00:00Z966 hPa
2021-10-05T15:00:00Z966 hPa
2021-10-05T18:00:00Z966 hPa
2021-10-05T21:00:00Z967 hPa
2021-10-06T00:00:00Z967 hPa
2021-10-06T03:00:00Z968 hPa
2021-10-06T06:00:00Z968 hPa
2021-10-06T09:00:00Z969 hPa
2021-10-06T12:00:00Z969 hPa
2021-10-06T15:00:00Z970 hPa
2021-10-06T18:00:00Z971 hPa
2021-10-06T21:00:00Z972 hPa
2021-10-07T00:00:00Z973 hPa
2021-10-07T03:00:00Z975 hPa
2021-10-07T06:00:00Z976 hPa

ACE Compared With the 2021 Season

Accumulated cyclone energy of named storms in 2021
Sam (this storm)54.0 ACE
Habana (South-West Indian)34.2 ACE
Larry (North Atlantic)31.9 ACE
Surigae (Western North Pacific)28.7 ACE
Chanthu (Western North Pacific)28.7 ACE
Linda (Eastern North Pacific)25.4 ACE
Faraji (South-West Indian)22.1 ACE
Mindulle (Western North Pacific)21.9 ACE
Felicia (Eastern North Pacific)21.4 ACE
Yasa (South Pacific)19.8 ACE
Rai (Western North Pacific)18.9 ACE
In-Fa (Western North Pacific)14.9 ACE
Marian (South-West Indian)14.2 ACE
Niran (South Pacific)14.1 ACE
Ida (North Atlantic)10.6 ACE
Elsa (North Atlantic)9.9 ACE
Grace (North Atlantic)8.6 ACE
Hilda (Eastern North Pacific)8.3 ACE
Nyatoh (Western North Pacific)8.0 ACE
Henri (North Atlantic)7.8 ACE
Enrique (Eastern North Pacific)7.7 ACE
Tauktae (North Indian)7.7 ACE
Rick (Eastern North Pacific)6.7 ACE
Malou (Western North Pacific)6.6 ACE
Eloise (South-West Indian)6.2 ACE
Seroja (South-West Indian)6.1 ACE
Wanda (North Atlantic)5.7 ACE
Conson (Western North Pacific)5.4 ACE
Kompasu (Western North Pacific)5.3 ACE
Champi (Western North Pacific)5.0 ACE
Gulab:Shaheen-Gu (North Indian)4.9 ACE
Namtheun (Western North Pacific)4.8 ACE
Nora (Eastern North Pacific)4.6 ACE
Ana (South Pacific)4.4 ACE
Guambe (South-West Indian)4.3 ACE
Pamela (Eastern North Pacific)4.2 ACE
Odette (South-West Indian)3.9 ACE
Olaf (Eastern North Pacific)3.7 ACE
Chalane (South-West Indian)3.7 ACE
Alicia (South-West Indian)3.6 ACE
Yaas (North Indian)3.6 ACE
Danilo (South-West Indian)3.6 ACE
Cempaka (Western North Pacific)3.4 ACE
Mirinae (Western North Pacific)3.4 ACE
Bongoyo (South-West Indian)3.4 ACE
Kevin (Eastern North Pacific)3.2 ACE
Choi-Wan (Western North Pacific)3.2 ACE
Jobo (South-West Indian)3.2 ACE
Lucas (South Pacific)3.2 ACE
Nida (Western North Pacific)3.2 ACE
Lupit (Western North Pacific)3.0 ACE
Omais (Eastern North Pacific)2.9 ACE
Victor (North Atlantic)2.5 ACE
Fred (North Atlantic)2.4 ACE
Nicholas (North Atlantic)2.4 ACE
Zazu (South Pacific)2.2 ACE
Dujuan (Western North Pacific)2.0 ACE
Joshua (South-West Indian)1.9 ACE
Peter (North Atlantic)1.8 ACE
Blanca (Eastern North Pacific)1.7 ACE
Kimi (South Pacific)1.6 ACE
Guillermo (Eastern North Pacific)1.6 ACE
Rose (North Atlantic)1.4 ACE
Dolores (Eastern North Pacific)1.4 ACE
Carlos (Eastern North Pacific)1.3 ACE
Lionrock (Western North Pacific)1.2 ACE
Iman (South-West Indian)1.1 ACE
Claudette (North Atlantic)1.1 ACE
Julian (North Atlantic)1.1 ACE
Bill (North Atlantic)1.0 ACE
Ana (North Atlantic)0.8 ACE
Bina (South Pacific)0.8 ACE
Jawad (North Indian)0.7 ACE
Marty (Eastern North Pacific)0.7 ACE
Kate (North Atlantic)0.7 ACE
Andres (Eastern North Pacific)0.6 ACE
Jimena (Eastern North Pacific)0.6 ACE
Sandra (Eastern North Pacific)0.6 ACE
Teresa (North Atlantic)0.6 ACE
Imogen (South Pacific)0.5 ACE
Koguma (Western North Pacific)0.5 ACE
Terry (Eastern North Pacific)0.5 ACE
Mindy (North Atlantic)0.5 ACE
Odette (North Atlantic)0.4 ACE
Danny (North Atlantic)0.4 ACE
Ignacio (Eastern North Pacific)0.4 ACE
Dianmu (Western North Pacific)0.3 ACE
Nepartak (Western North Pacific)0.0 ACE

ACE is the sum of the squares of six hourly wind speeds, in units of 10,000 knots squared, counted while winds are at or above 34 knots.

Which Agency's Numbers

Wind and pressure from hurdat_atl,usa as carried in NOAA IBTrACS. Agencies average winds over different periods.

Related Headlines

Third party news, headline and link only

Download the Data

Sources: Source: International Best Track Archive for Climate Stewardship (IBTrACS) v04r01, NOAA National Centers for Environmental Information, doi:10.25921/82ty-9e16. Some agency values come from third parties such as JMA, IMD and BoM. (NOAA NCEI terms (citation requested)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-17. Storm records are best tracks and can be revised by the agencies.