| PERCENTAGES | |||||||||
| Intensity | Jan-Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
| Tropical Storms | 0.1 | 1.7 | 6.6 | 6.2 | 20.0 | 35.5 | 22.9 | 6.3 | 0.8 |
| Minor Hurricanes | 0.3 | 0.5 | 2.6 | 4.4 | 21.6 | 46.0 | 19.8 | 4.2 | 0.6 |
| Intense Hurricanes | 0.0 | 0.1 | 0.2 | 1.7 | 21.9 | 57.2 | 16.6 | 2.3 | 0.0 |
| Named Storms | 0.2 | 1.1 | 4.5 | 5.1 | 20.8 | 41.5 | 21.1 | 5.1 | 0.6 |
| U.S. Intense Hurricanes | |||||||||
| East Coast | 0.0 | 0.0 | 0.0 | 0.0 | 11.8 | 67.6 | 20.6 | 0.0 | 0.0 |
| Gulf Coast | 0.0 | 0.0 | 5.7 | 8.6 | 31.4 | 51.4 | 2.9 | 0.0 | 0.0 |
Table 3 Mean monthly occurrence (in percent of total annual) of various categories of Atlantic basin tropical cyclone activity (based on duration of individual storms; data from 1886 to 1991) and of U.S. IH strikes (data from 1899 to 1991).