All seasons · Eastern and Central Pacific
2004 Pacific hurricane season
The 2004 Pacific season has 17 storms in the best-track record; 12 reached tropical-storm strength and 6 became hurricanes, 3 of them major. Its accumulated cyclone energy of 71.1 is the 23rd-lowest of the 77 seasons in the eastern and central Pacific record since 1949. Javier was the strongest, peaking at 150 mph as a Category 4 hurricane. Landfall records exist for 2 of its storms, in Baja California Sur and Sinaloa. The first record is dated May 22, the last October 26.
Storm by storm
More storms formed in August than in any other month of 2004: 6 of 17. Javier both lasted longest, 8.8 days as a tropical or subtropical system, and contributed the most energy, 38% of the season's ACE. Strongest landfall of each storm: Javier reached Baja California Sur as a depression on September 19; Pacific Storm 16 of 2004 reached Sinaloa as a depression on October 26.
| Storm | Dates | Peak | Strength | Lowest | Landfalls |
|---|---|---|---|---|---|
| Agatha | May 22–24 | 60 mph | Tropical storm | 997 mb | – |
| Pacific Storm 2 of 2004 | Jul 2–3 | 35 mph | Depression | 1007 mb | – |
| Central Pacific Storm 1 of 2004 | Jul 4–6 | 30 mph | Depression | 1007 mb | – |
| Blas | Jul 12–15 | 65 mph | Tropical storm | 991 mb | – |
| Celia | Jul 19–25 | 85 mph | Category 1 | 981 mb | – |
| Darby | Jul 26 – Aug 1 | 120 mph | Category 3 | 957 mb | – |
| Pacific Storm 6 of 2004 | Aug 1–2 | 30 mph | Depression | 1008 mb | – |
| Estelle | Aug 19–24 | 70 mph | Tropical storm | 989 mb | – |
| Frank | Aug 23–26 | 85 mph | Category 1 | 979 mb | – |
| Pacific Storm 9 of 2004 | Aug 23–26 | 35 mph | Depression | 1005 mb | – |
| Georgette | Aug 26–30 | 65 mph | Tropical storm | 995 mb | – |
| Howard | Aug 30 – Sep 5 | 140 mph | Category 4 | 943 mb | – |
| Isis | Sep 8–16 | 75 mph | Category 1 | 987 mb | – |
| Javier | Sep 10–19 | 150 mph | Category 4 | 930 mb | Baja California Sur |
| Kay | Oct 4–6 | 45 mph | Tropical storm | 1004 mb | – |
| Lester | Oct 11–13 | 50 mph | Tropical storm | 1000 mb | – |
| Pacific Storm 16 of 2004 | Oct 25–26 | 35 mph | Depression | 1004 mb | Sinaloa |
Against other Pacific seasons
Accumulated cyclone energy of every season; the red bar is 2004.