2019–20 South-West Indian Ocean cyclone season | |
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Seasonal boundaries | |
First system formed | July 22, 2019 |
Last system dissipated | Season ongoing |
Strongest storm | |
Name | 01 |
• Maximum winds | 45 km/h (30 mph) (10-minute sustained) |
• Lowest pressure | 1001 hPa (mbar) |
Seasonal statistics | |
Total disturbances | 1 |
Total fatalities | None |
Total damage | None |
Related articles | |
The 2019–20 South-West Indian Ocean cyclone season is a current event of the annual cycle of tropical cyclone and subtropical cyclone formation. The season began on July 22, 2019 with the formation of Zone of Disturbed Weather 01, however, it will officially begin on November 15. It will end on April 30, 2020, with the exception for Mauritius and the Seychelles, for which it will end on May 15, 2020. These dates conventionally delimit the period of each year when most tropical and subtropical cyclones form in the basin, which is west of 90°E and south of the Equator. Tropical and subtropical cyclones in this basin are monitored by the Regional Specialised Meteorological Centre in Réunion.
Seasonal summary
Systems
Zone of Disturbed Weather 01
Zone of disturbed weather | |
Duration | July 22 – July 24 |
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Peak intensity | 45 km/h (30 mph) (10-min) 1001 hPa (mbar) |
On July 22, a zone of disturbed weather formed over the north central part of the Southern Indian Ocean. The system drifted southward for the next couple of days but failed to organize further. Late on July 24, the disturbance transitioned into an extratropical low, and Meteo France discontinued advisories on the storm.
Storm names
Within the South-West Indian Ocean, tropical depressions and subtropical depressions that are judged to have 10-minute sustained wind speeds of 65 km/h (40 mph) by the Regional Specialized Meteorological Center on La Réunion Island, France (RSMC La Réunion) are usually assigned a name. However, it is the Sub-Regional Tropical Cyclone Advisory Centers in Mauritius and Madagascar who name the systems. The Sub-Regional Tropical Cyclone Advisory Center in Mauritius names a storm should it intensify into a moderate tropical storm between 55°E and 90°E. If instead, a cyclone intensifies into a moderate tropical storm between 30°E and 55°E then the Sub-Regional Tropical Cyclone Advisory Center in Madagascar assigns the appropriate name to the storm.
Beginning from the 2016–17 season, name lists within the South-West Indian Ocean will be rotated on a triennial basis. Storm names are only used once, so any storm name used this year will be removed from rotation and replaced with a new name for the 2022–23 season. The unused names are expected to be reused in the list for the 2022–23 season.[1] All of the names are the same with the exception of Ambali, Belna, Calvinia, Diane, Esami and Francisco, which replaced Abela, Bransby, Carlos, Dineo, Enawo and Fernando from the 2016–17 season.
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Seasonal effects
This table lists all of the tropical cyclones and subtropical cyclones that were monitored during the 2019–20 South-West Indian Ocean cyclone season. Information on their intensity, duration, name, areas affected, primarily comes from RSMC La Réunion. Death and damage reports come from either press reports or the relevant national disaster management agency while the damage totals are given in 2019 USD.
Name | Dates | Peak intensity | Areas affected | Damage (USD) |
Deaths | Refs | ||
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Category | Wind speed | Pressure | ||||||
01 | July 22 – 24 | Zone of disturbed weather | 45 km/h (30 mph) | 1001 hPa (29.56 inHg) | None | None | None | |
Season aggregates | ||||||||
1 system | July 22 – Season ongoing | 45 km/h (30 mph) | 1001 hPa (29.56 inHg) | None | None |
See also
- List of Southern Hemisphere cyclone seasons
- Atlantic hurricane seasons: 2019, 2020
- Pacific hurricane seasons: 2019, 2020
- Pacific typhoon seasons: 2019, 2020
- North Indian Ocean cyclone seasons: 2019, 2020
- 2019–20 Australian region cyclone season
- 2019–20 South Pacific cyclone season
References
- ^ Regional Association I Tropical Cyclone Committee (2016). "Tropical Cyclone Operational Plan for the South-West Indian Ocean" (PDF). World Meteorological Organization. Retrieved 2016-10-05.