2021 Central Pacific hurricane season
Jun 1, 2021 – Nov 30, 2021 · Season ended
The 2021 Central Pacific hurricane season produced 1 named storm, 0 hurricanes and 0 major hurricanes, against a 1991–2020 average of 1.6, 0.8 and 0.5. Its accumulated cyclone energy was 3, 12% of the average.
2021 season at a glance
- Named storms: 1 (1991–2020 average 1.6).
- Hurricanes (64 kt+): 0 (average 0.8).
- Major, 96 kt+: 0 (average 0.5).
- Accumulated cyclone energy: 2.8, 12% of the 24 average.
- Named-storm days: 4.0, counting each six-hourly fix at 34 kt or more as a quarter day.
- First named storm: Omais, August 10.
- First hurricane: none.
- Last storm to dissipate: Omais, August 31.
- All systems tracked: 1, every one of which reached tropical-storm strength.
Counts use 1-minute best-track winds: named storms reached 34 kt (39 mph), the next column 64 kt (74 mph) and major storms 96 kt (111 mph).
Every storm of the 2021 season
| Storm | Dates | Peak | Min pressure | Landfall |
|---|---|---|---|---|
| Omais | – | TS | 990 mb | Tongyeong, South Korea |
- Omais: Omais formed in the Central Pacific in August 2021 and peaked as a tropical storm with maximum sustained winds of 65 mph (100 km/h) and a minimum pressure of 990 mb. It made landfall near Tongyeong, South Korea. The system was tracked for 25 days.
Each summary is built from the storm’s best track.
Strongest storm of 2021
Tropical Storm Omais was the strongest storm of the season, peaking at 65 mph (100 km/h), with a lowest pressure of 990 mb, on August 21. It stayed below hurricane strength (64 kt, 74 mph).
38 Central Pacific storms since 1980 peaked higher, and 4 matched it. It produced 100% of the season’s accumulated cyclone energy.
Landfalls in 2021
1 of the season’s 1 systems made landfall, none of them at hurricane strength. Each landfall point is listed with the nearest town and the wind at that moment.
- August 23: Omais near Tongyeong, South Korea, 30 mph (tropical depression)
How 2021 ranks since 1980
The season ranks 21st of 47 Central Pacific seasons since 1980 for named storms (tied with 15 other seasons), 27th for hurricanes (tied with 20 other seasons) and 28th for accumulated cyclone energy.
The record since 1980 is 7 named storms, in 2015, and the highest ACE is 167, in 1992.
2021 storm names
The 2021 season used 1 name: Omais.
Central Pacific names are used in order across years from four lists, so a season picks up where the last one stopped. See the Central Pacific name lists.
2021 season FAQ
How many named storms were there in 2021?
The 2021 Central Pacific hurricane season had 1 named storm, 0 hurricanes and 0 major hurricanes, from 1 system tracked in all. The 1991–2020 average is 1.6 named storms, 0.8 at 64 kt or more and 0.5 major per season. The first to form was Omais and the last was Omais.
What was the strongest storm of 2021?
Tropical Storm Omais. It peaked at 65 mph (100 km/h, 55 kt) with a lowest pressure of 990 mb on August 21. It stayed below hurricane strength (64 kt, 74 mph). 38 Central Pacific storms since 1980 peaked higher. It produced 100% of the season’s accumulated cyclone energy.
When did the 2021 season end?
The official season ended on November 30, 2021, as it does every year in the Atlantic, eastern Pacific and Central Pacific. The last system, Omais, dissipated on August 31. Storms that form in December still count toward that year: 2 Central Pacific storms since 1980 reached tropical-storm strength in December.