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

Rai: 2021 Western North Pacific

Rai reached 143 kt (265 km/h, 165 mph) (C5) in the 2021 Western North Pacific season, from 2021-12-11 to 2021-12-21, with track, wind and pressure and 18.9 ACE.

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

Key Facts

  • Rai was a category 5 at its peak in the 2021 Western North Pacific season.
  • Peak maximum sustained wind was 143 kt (265 km/h, 165 mph), reached on 16 December 2021, and the lowest pressure was 915 hPa.
  • The track runs from 11 December 2021 to 21 December 2021 with 81 six hourly positions.
  • Rai accumulated 18.9 ACE.
  • 2 landfalls are recorded, the first on 16 December 2021.

Track

11 December 2021 to 21 December 2021
Track of Rai 2021, coloured by intensity Rai formed on 11 December 2021 and its track is coloured by category at each six hourly step, peaking as a category 5. Landfall 2021-12-16Landfall 2021-12-17
Rai formed on 11 December 2021 and its track is coloured by category at each six hourly step, peaking as a category 5. Made with Natural Earth and IBTrACS. Ringed points mark landfalls or the latest advisory position.
Track of Rai 2021, coloured by intensity: tracks drawn on the map
StormFirst position (lat, lon)Last position (lat, lon)Track points
Rai5.3, 145.021.7, 116.581

Wind

Knots, six hourly
Maximum sustained wind of Rai Maximum sustained wind in knots every six hours, from 20 kt (37 km/h, 23 mph) at the start to a peak of 143 kt (265 km/h, 165 mph). 0 38 75 113 150 12-1112-1212-1412-1512-1712-1812-1912-21
Maximum sustained wind in knots every six hours, from 20 kt (37 km/h, 23 mph) at the start to a peak of 143 kt (265 km/h, 165 mph).
Maximum sustained wind of Rai
Time (UTC)Wind (kt)
2021-12-11T12:00:00Z20 kt
2021-12-11T15:00:00Z18 kt
2021-12-11T18:00:00Z15 kt
2021-12-11T21:00:00Z15 kt
2021-12-12T00:00:00Z15 kt
2021-12-12T03:00:00Z18 kt
2021-12-12T06:00:00Z20 kt
2021-12-12T09:00:00Z23 kt
2021-12-12T12:00:00Z25 kt
2021-12-12T15:00:00Z25 kt
2021-12-12T18:00:00Z25 kt
2021-12-12T21:00:00Z25 kt
2021-12-13T00:00:00Z25 kt
2021-12-13T03:00:00Z28 kt
2021-12-13T06:00:00Z35 kt
2021-12-13T09:00:00Z33 kt
2021-12-13T12:00:00Z40 kt
2021-12-13T15:00:00Z40 kt
2021-12-13T18:00:00Z45 kt
2021-12-13T21:00:00Z48 kt
2021-12-14T00:00:00Z50 kt
2021-12-14T03:00:00Z53 kt
2021-12-14T06:00:00Z55 kt
2021-12-14T09:00:00Z58 kt
2021-12-14T12:00:00Z60 kt
2021-12-14T15:00:00Z63 kt
2021-12-14T18:00:00Z70 kt
2021-12-14T21:00:00Z68 kt
2021-12-15T00:00:00Z75 kt
2021-12-15T03:00:00Z73 kt
2021-12-15T06:00:00Z80 kt
2021-12-15T09:00:00Z83 kt
2021-12-15T12:00:00Z80 kt
2021-12-15T15:00:00Z108 kt
2021-12-15T18:00:00Z85 kt
2021-12-15T21:00:00Z138 kt
2021-12-16T00:00:00Z100 kt
2021-12-16T03:00:00Z143 kt
2021-12-16T06:00:00Z105 kt
2021-12-16T09:00:00Z128 kt
2021-12-16T12:00:00Z95 kt
2021-12-16T15:00:00Z115 kt
2021-12-16T18:00:00Z85 kt
2021-12-16T21:00:00Z103 kt
2021-12-17T00:00:00Z80 kt
2021-12-17T03:00:00Z90 kt
2021-12-17T06:00:00Z80 kt
2021-12-17T09:00:00Z88 kt
2021-12-17T12:00:00Z80 kt
2021-12-17T15:00:00Z90 kt
2021-12-17T18:00:00Z80 kt
2021-12-17T21:00:00Z95 kt
2021-12-18T00:00:00Z85 kt
2021-12-18T03:00:00Z108 kt
2021-12-18T06:00:00Z95 kt
2021-12-18T09:00:00Z128 kt
2021-12-18T12:00:00Z100 kt
2021-12-18T15:00:00Z135 kt
2021-12-18T18:00:00Z105 kt
2021-12-18T21:00:00Z125 kt
2021-12-19T00:00:00Z105 kt
2021-12-19T03:00:00Z110 kt
2021-12-19T06:00:00Z100 kt
2021-12-19T09:00:00Z93 kt
2021-12-19T12:00:00Z90 kt
2021-12-19T15:00:00Z80 kt
2021-12-19T18:00:00Z80 kt
2021-12-19T21:00:00Z73 kt
2021-12-20T00:00:00Z70 kt
2021-12-20T03:00:00Z60 kt
2021-12-20T06:00:00Z55 kt
2021-12-20T09:00:00Z48 kt
2021-12-20T12:00:00Z35 kt
2021-12-20T15:00:00Z43 kt
2021-12-20T18:00:00Z40 kt
2021-12-20T21:00:00Z38 kt
2021-12-21T00:00:00Z35 kt
2021-12-21T03:00:00Z33 kt
2021-12-21T06:00:00Z30 kt
2021-12-21T09:00:00Z28 kt
2021-12-21T12:00:00Z25 kt

Pressure

hPa, six hourly
Central pressure of Rai Central pressure in hectopascals every six hours, falling to 915 hPa at the lowest. 910 983 1055 1128 1200 12-1112-1212-1412-1512-1712-1812-1912-21
Central pressure in hectopascals every six hours, falling to 915 hPa at the lowest.
Central pressure of Rai
Time (UTC)Pressure (hPa)
2021-12-11T12:00:00Z1007 hPa
2021-12-11T15:00:00Z1006 hPa
2021-12-11T18:00:00Z1002 hPa
2021-12-11T21:00:00Z1005 hPa
2021-12-12T00:00:00Z1004 hPa
2021-12-12T03:00:00Z1005 hPa
2021-12-12T06:00:00Z1002 hPa
2021-12-12T09:00:00Z1004 hPa
2021-12-12T12:00:00Z1004 hPa
2021-12-12T15:00:00Z1002 hPa
2021-12-12T18:00:00Z1002 hPa
2021-12-12T21:00:00Z1001 hPa
2021-12-13T00:00:00Z1000 hPa
2021-12-13T03:00:00Z1002 hPa
2021-12-13T06:00:00Z998 hPa
2021-12-13T09:00:00Z1001 hPa
2021-12-13T12:00:00Z996 hPa
2021-12-13T15:00:00Z997 hPa
2021-12-13T18:00:00Z992 hPa
2021-12-13T21:00:00Z992 hPa
2021-12-14T00:00:00Z990 hPa
2021-12-14T03:00:00Z991 hPa
2021-12-14T06:00:00Z985 hPa
2021-12-14T09:00:00Z991 hPa
2021-12-14T12:00:00Z980 hPa
2021-12-14T15:00:00Z986 hPa
2021-12-14T18:00:00Z970 hPa
2021-12-14T21:00:00Z982 hPa
2021-12-15T00:00:00Z965 hPa
2021-12-15T03:00:00Z980 hPa
2021-12-15T06:00:00Z955 hPa
2021-12-15T09:00:00Z972 hPa
2021-12-15T12:00:00Z955 hPa
2021-12-15T15:00:00Z950 hPa
2021-12-15T18:00:00Z950 hPa
2021-12-15T21:00:00Z921 hPa
2021-12-16T00:00:00Z925 hPa
2021-12-16T03:00:00Z917 hPa
2021-12-16T06:00:00Z915 hPa
2021-12-16T09:00:00Z934 hPa
2021-12-16T12:00:00Z935 hPa
2021-12-16T15:00:00Z947 hPa
2021-12-16T18:00:00Z950 hPa
2021-12-16T21:00:00Z958 hPa
2021-12-17T00:00:00Z955 hPa
2021-12-17T03:00:00Z968 hPa
2021-12-17T06:00:00Z955 hPa
2021-12-17T09:00:00Z969 hPa
2021-12-17T12:00:00Z955 hPa
2021-12-17T15:00:00Z967 hPa
2021-12-17T18:00:00Z955 hPa
2021-12-17T21:00:00Z964 hPa
2021-12-18T00:00:00Z950 hPa
2021-12-18T03:00:00Z955 hPa
2021-12-18T06:00:00Z935 hPa
2021-12-18T09:00:00Z935 hPa
2021-12-18T12:00:00Z925 hPa
2021-12-18T15:00:00Z926 hPa
2021-12-18T18:00:00Z915 hPa
2021-12-18T21:00:00Z936 hPa
2021-12-19T00:00:00Z915 hPa
2021-12-19T03:00:00Z950 hPa
2021-12-19T06:00:00Z925 hPa
2021-12-19T09:00:00Z966 hPa
2021-12-19T12:00:00Z940 hPa
2021-12-19T15:00:00Z979 hPa
2021-12-19T18:00:00Z955 hPa
2021-12-19T21:00:00Z986 hPa
2021-12-20T00:00:00Z970 hPa
2021-12-20T03:00:00Z993 hPa
2021-12-20T06:00:00Z985 hPa
2021-12-20T09:00:00Z1000 hPa
2021-12-20T12:00:00Z1000 hPa
2021-12-20T15:00:00Z1004 hPa
2021-12-20T18:00:00Z1006 hPa
2021-12-20T21:00:00Z1006 hPa
2021-12-21T00:00:00Z1008 hPa
2021-12-21T03:00:00Z1006 hPa
2021-12-21T06:00:00Z1008 hPa
2021-12-21T09:00:00Z1009 hPa
2021-12-21T12:00:00Z1010 hPa

ACE Compared With the 2021 Season

Accumulated cyclone energy of named storms in 2021
Sam (North Atlantic)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 (this storm)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.

Landfalls

Landfalls of Rai 2021
DatePlacePositionWind
2021-12-16Open coast, place not named in the data10.1, 124.295 kt (176 km/h, 109 mph)
2021-12-17Open coast, place not named in the data10.3, 119.388 kt (163 km/h, 101 mph)

Which Agency's Numbers

Wind and pressure from jtwc_wp,tokyo,us 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.