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Revision as of 11:05, 16 September 2018

2018–19 South-West Indian Ocean cyclone season
Seasonal boundaries
First system formedSeptember 13, 2018
Last system dissipatedCurrently active
Strongest storm
Name01
 • Maximum winds55 km/h (35 mph)
(10-minute sustained)
 • Lowest pressure996 hPa (mbar)
Seasonal statistics
Total disturbances1
Total fatalitiesNone
Total damageNone
Related articles
South-West Indian Ocean tropical cyclone seasons
2016–17, 2017–18, 2018–19, 2019–20, 2020–21

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.

Seasonal summary

Tropical cyclone scales#Comparisons across basins

Systems

Tropical Depression 01

Tropical depression (MFR)
Tropical storm (SSHWS)
 
DurationSeptember 13 – Present
Peak intensity55 km/h (35 mph) (10-min);
996 hPa (mbar)

Storm names

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.[1]

  • Alcide (unused)
  • Bouchra (unused)
  • Cilida (unused)
  • Desmond (unused)
  • Eketsang (unused)
  • Funani (unused)
  • Gelena (unused)
  • Haleh (unused)
  • Idai (unused)
  • Joaninha (unused)
  • Kenneth (unused)
  • Lorna (unused)
  • Maipelo (unused)
  • Njazi (unused)
  • Oscar (unused)
  • Pamela (unused)
  • Quentin (unused)
  • Rajab (unused)
  • Savana (unused)
  • Themba (unused)
  • Uyapo (unused)
  • Viviane (unused)
  • Walter (unused)
  • Xangy (unused)
  • Yemurai (unused)
  • Zanele (unused)

Seasonal effects

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 Peak intensity Areas affected Damage
(USD) 		Deaths Refs
Category Wind speed Pressure
01 September 13 – Present Tropical depression 55 km/h (35 mph) 1004 hPa (29.65 inHg) None None None
Season aggregates
1 system September 13 – Present 55 km/h (35 mph) 1004 hPa (29.65 inHg) None None

See also

References

  1. ^ 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.
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