Cyclone Hyacinthe
South-West Indian cyclone in 1980 / From Wikipedia, the free encyclopedia
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Cyclone Hyacinthe was the wettest tropical cyclone on record worldwide. The eighth named storm of the season, Hyacinthe formed on January 15, 1980, to the northeast of Mauritius in the southern Indian Ocean. Initially it moved to the west-southwest, and while slowly intensifying it passed north of the French overseas department of Réunion. On January 19, Météo-France estimated that the storm had intensified to a tropical cyclone. Hyacinthe looped to the south of eastern Madagascar and weakened, although it restrengthened after turning to the east. The storm executed another loop to the southwest of Réunion, passing near the island for a second and later third time. Hyacinthe became extratropical on January 29 after turning southward, dissipating two days later.
Meteorological history | |
---|---|
Formed | January 15, 1980 (1980-01-15) |
Extratropical | January 29, 1980 |
Dissipated | January 31, 1980 (1980-02-01) |
Intense tropical cyclone | |
10-minute sustained (MF) | |
Highest winds | 165 km/h (105 mph) |
Category 1-equivalent tropical cyclone | |
1-minute sustained (SSHWS/JTWC) | |
Highest winds | 130 km/h (80 mph) |
Overall effects | |
Fatalities | 25 |
Damage | $167 million (1980 USD) |
Areas affected | Mauritius, Réunion, Madagascar |
IBTrACS | |
Part of the 1979–80 South-West Indian Ocean cyclone season |
For twelve days, Hyacinthe dropped torrential rainfall on Réunion; nearly all of the island received more than 1 m (3.3 ft) of precipitation. Over a 15-day period from January 14 to January 28, 6,083 mm (239.5 in) of rainfall were recorded at Commerson Crater, a volcano caldera. The heaviest rainfall occurred through a process called orographic lift in the mountainous interior, leading to hundreds of landslides. Widespread floods damaged half the roads on Réunion and isolated three villages. Hyacinthe caused heavy damage to crops and damaged or destroyed 2,000 houses. Losses from the storm totaled $167 million (1980 USD, 676 million francs),[nb 1] and 25 people were killed.