|2018–19 South-West Indian Ocean cyclone season|
Season summary map
|First system formed||September 13, 2018|
|Last system dissipated||Currently active|
|• Maximum winds||
55 km/h (35 mph)|
|• Lowest pressure||1004 hPa (mbar)|
The 2018–19 South-West Indian Ocean cyclone season is an ongoing event of the annual cycle of tropical cyclone and subtropical cyclone formation. It will officially begin on November 15, 2018, and will end on April 30, 2019, with the exception for Mauritius and the Seychelles, for which it will end on May 15, 2019. 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.
|Tropical depression (MFR)|
|Tropical storm (SSHWS)|
|Duration||September 13 – September 17|
|Peak intensity||55 km/h (35 mph) (10-min) 1004 hPa (mbar)|
On September 13, a tropical depression formed to the southwest of Diego Garcia. The system tracked west-southwest, organizing slowly over marginally waters of 26-27 degrees Celsius and moderate wind shear. On September 16, the tropical depression began to weaken, after encountering unfavorable conditions. On September 18, the system dissipated.
Within the South-West Indian Ocean, tropical depressions and subtropical depressions that are judged to have 10-minute sustained windspeeds 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 2021–22 season. The unused names are expected to be reused in the list for the 2021–22 season.
This table lists all of the tropical cyclones and subtropical cyclones that were monitored during the 2017–2018 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 2017 or 2018 USD.
|Name||Dates active||Peak classification||Sustained
|01||September 13 – 17||Tropical depression||55 km/h (35 mph)||1004 hPa (29.65 inHg)||None||None||None|
|1 system||September 13 – Present||55 km/h (35 mph)||1004 hPa (29.65 inHg)||None||None|
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