1976–77 South-West Indian Ocean cyclone season
Cyclone season in the Southwest Indian Ocean
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The 1976–77 South-West Indian Ocean cyclone season was a below-average cyclone season. The season officially ran from November 1, 1976, to April 30, 1977.
(10-minute sustained)
| 1976–77 South-West Indian Ocean cyclone season | |
|---|---|
Season summary map | |
| Seasonal boundaries | |
| First system formed | 3 October 1976 |
| Last system dissipated | 2 March 1977 |
| Strongest storm | |
| Name | Jack-Io |
| • Maximum winds | 165 km/h (105 mph) (10-minute sustained) |
| • Lowest pressure | 935 hPa (mbar) |
| Seasonal statistics | |
| Total depressions | 9 |
| Total storms | 8 |
| Tropical cyclones | 3 |
| Intense tropical cyclones | 1 |
| Total fatalities | 301 |
| Total damage | Unknown |
| Related articles | |
Systems

Moderate Tropical Storm Agathe
The first storm of the season, it stayed out to sea before dissipating.
Severe Tropical Storm Brigitta
This system formed west of Diego Garcia on November 15. For the next eleven days, Brigitta meandered southward as a tropical depression. After assuming a westward course, Brigitta strengthened into a tropical storm on November 26. The system reached its peak intensity as it passed by the northern tip of Madagascar. The system moved through the Comoros Islands, and then turned southward into Mozambique.[1]
Cyclone Clarence
On January 8, Clarence passed near St. Brandon, producing high waves that destroyed four boats and several homes. Wind gusts on the island reached 169 km/h (105 mph). For several days moved in a counterclockwise track around the Mascarene Islands, producing high waves and beneficial rainfall on Réunion.[2]
Moderate Tropical Storm Domitile
The cyclone paralleled the coast of Madagascar for most of its life, while remaining weak.
Severe Tropical Storm Emilie
Cyclone Emilie struck the east coast of Mozambique and northeastern South Africa in February 1977. Heavy flooding in the Limpopo Valley killed at least 300 people.[3][4]
Tropical Cyclone Fifi
Cyclone Fifi passed west of Réunion on February 6, bringing four days' of rainfall that reached 656 mm (25.8 in). Flooding damaged crops and roads, and one person died while attempting to cross an inundated road.[5][6]
Tropical Depression Gilda
The cyclone entered the basin on December 4, dissipating on December 9.
Severe Tropical Storm Hervea
The storm passed just south of Agaléga, dropping 147 mm (5.8 in) of rainfall.[7]
Intense Tropical Cyclone Jack–Io
The strongest storm of the season, the cyclone stayed out to sea for the time it existed.