All seasons · Atlantic
2003 Atlantic hurricane season
The 2003 Atlantic season has 21 storms in the best-track record; 16 reached tropical-storm strength and 7 became hurricanes, 3 of them major. Its accumulated cyclone energy of 174.7 is the 15th-highest of the 175 seasons in the Atlantic record since 1851. Isabel was the strongest, peaking at 165 mph as a Category 5 hurricane. Landfall records exist for 10 of its storms, in the Dominican Republic, Florida, Georgia, Louisiana, North Carolina, Nova Scotia, Quintana Roo, Tabasco, Tamaulipas and Texas. The first record is dated April 20, the last December 11.
Storm by storm
More storms formed in September than in any other month of 2003: 5 of 21. Isabel both lasted longest, 13.2 days as a tropical or subtropical system, and contributed the most energy, 36% of the season's ACE. Strongest landfall of each storm: Bill reached Louisiana as a tropical storm on June 30; Claudette reached Texas as a Category 1 hurricane on July 15; Storm 7 of 2003 reached Georgia as a depression on July 26; Erika reached Tamaulipas as a Category 1 hurricane on August 16; Grace reached Texas as a tropical storm on August 31; Henri reached Florida as a depression on September 6; Isabel reached North Carolina as a Category 2 hurricane on September 18; Juan reached Nova Scotia as a Category 2 hurricane on September 29; and others in the table below.
| Storm | Dates | Peak | Strength | Lowest | Landfalls |
|---|---|---|---|---|---|
| Ana | Apr 20–24 | 60 mph | Tropical storm | 994 mb | – |
| Storm 2 of 2003 | Jun 11–11 | 35 mph | Depression | 1008 mb | – |
| Bill | Jun 29 – Jul 2 | 60 mph | Tropical storm | 997 mb | Louisiana |
| Claudette | Jul 8–17 | 90 mph | Category 1 | 979 mb | Quintana Roo, Texas |
| Danny | Jul 16–21 | 75 mph | Category 1 | 1000 mb | – |
| Storm 6 of 2003 | Jul 19–21 | 35 mph | Depression | 1010 mb | – |
| Storm 7 of 2003 | Jul 25–27 | 35 mph | Depression | 1016 mb | Georgia |
| Erika | Aug 14–17 | 75 mph | Category 1 | 986 mb | Tamaulipas |
| Storm 9 of 2003 | Aug 21–22 | 35 mph | Depression | 1007 mb | – |
| Fabian | Aug 27 – Sep 8 | 145 mph | Category 4 | 939 mb | – |
| Grace | Aug 30 – Sep 2 | 40 mph | Tropical storm | 1007 mb | Texas |
| Henri | Sep 3–8 | 60 mph | Tropical storm | 997 mb | Florida |
| Isabel | Sep 6–19 | 165 mph | Category 5 | 915 mb | North Carolina |
| Storm 14 of 2003 | Sep 8–10 | 35 mph | Depression | 1007 mb | – |
| Juan | Sep 24–29 | 105 mph | Category 2 | 969 mb | Nova Scotia |
| Kate | Sep 25 – Oct 7 | 125 mph | Category 3 | 952 mb | – |
| Larry | Oct 1–6 | 65 mph | Tropical storm | 993 mb | Tabasco |
| Mindy | Oct 10–14 | 45 mph | Tropical storm | 1002 mb | – |
| Nicholas | Oct 13–23 | 70 mph | Tropical storm | 990 mb | – |
| Odette | Dec 4–7 | 65 mph | Tropical storm | 993 mb | Dominican Republic |
| Peter | Dec 7–11 | 70 mph | Tropical storm | 990 mb | – |
Against other Atlantic seasons
Accumulated cyclone energy of every season; the red bar is 2003.