Storm history › South Indian Ocean
1977 South Indian Ocean cyclone season
The 1977 South Indian Ocean season had 6 storms of tropical-storm strength or more, 4 of them cyclones and 0 major (Category 3 or stronger).
The first storm was tracked from October 2, 1976 and the last ended on May 3, 1977. The strongest by wind was Cyclone Leo (1977), at 105 mph (165 km/h). The season's accumulated cyclone energy (ACE) was 37.7.
- Storms
- 6
- Cyclones
- 4
- Major
- 0
- Category 5
- 0
- ACE
- 37.7
DepressionTropical stormCat 1Cat 2Cat 3Cat 4Cat 5
Storms
| Storm | Dates | Peak |
|---|---|---|
| Storm Agathe | Oct 2 – Oct 15 | — |
| Storm Brigitta | Nov 6 – Dec 1 | — |
| Tropical Storm Harry | Dec 15 – Dec 21 | 65 mph |
| Storm Clarence | Jan 1 – Jan 16 | — |
| Cyclone Irene | Jan 6 – Jan 13 | 100 mph |
| Storm Domitile | Jan 17 – Jan 23 | — |
| Storm Emilie | Jan 25 – Feb 10 | — |
| Storm Fifi | Jan 25 – Feb 10 | — |
| Storm Gilda | Feb 1 – Feb 9 | — |
| Storm Hervea | Feb 10 – Mar 3 | — |
| Cyclone Io / Jack | Feb 13 – Mar 2 | 80 mph |
| Cyclone Karen | Mar 2 – Mar 9 | 100 mph |
| Cyclone Leo | Mar 24 – Mar 28 | 105 mph |
| Tropical Storm Verna | Apr 28 – May 3 | 70 mph |