FANDOM


2019–20 South-West Indian Ocean cyclone season (HurricaneLucas4064)
Seasonal boundaries
First system formed22 July 2019
Last system dissipated1 May 2020
Strongest storm
NameIrondro
 • Maximum winds215 km/h (130 mph)
(10-minute sustained)
 • Lowest pressure935 hPa (mbar)
Seasonal statistics
Total depressions12
Total storms10
Tropical cyclones6
Intense tropical cyclones4
Very intense tropical cyclones0
Total fatalitiesTBD
Total damage$0,000 (2020 USD)
Related articles
South-West Indian Ocean tropical cyclone seasons
2017–18, 2018–19, 2019–20, 2020–21, 2021–22

The 2019–20 South-West Indian Ocean cyclone season was an above average season. This cyclone season was an event of the annual cycle of tropical cyclone and subtropical cyclone formation in the South-West Indian Ocean basin. It officially began on November 15, 2019, and ended on April 30, 2020, with the exception for Mauritius and the Seychelles, for which it ended 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 (MFR)
96S 2019-07-23 0900Z 
DurationJuly 22 – July 24
Peak intensity45 km/h (30 mph) (10-min)  1001 hPa (mbar)

Severe Tropical Cyclone Ambali

Severe tropical storm (MFR)
Tropical storm (SSHWS)
Temporary cyclone south Ambali2019trackLucas
DurationDecember 13 – December 16
Peak intensity100 km/h (65 mph) (10-min)  985 hPa (mbar)

Moderate Tropical Storm Belna

Moderate tropical storm (MFR)
Tropical storm (SSHWS)
Temporary cyclone south Belna2020trackLucas
DurationJanuary 4 – January 5
Peak intensity65 km/h (40 mph) (10-min)  997 hPa (mbar)

Tropical Cyclone Calvinia

Tropical cyclone (MFR)
Category 1 tropical cyclone (SSHWS)
Temporary cyclone south Calvinia2020trackLucas
DurationJanuary 17 – January 23
Peak intensity130 km/h (80 mph) (10-min)  970 hPa (mbar)

Intense Tropical Cyclone Diane

Intense tropical cyclone (MFR)
Category 3 tropical cyclone (SSHWS)
Temporary cyclone south Diane2020trackLucas
DurationFebruary 9 – February 23
Peak intensity165 km/h (105 mph) (10-min)  955 hPa (mbar)

Severe Tropical Storm Esami

Severe tropical storm (MFR)
Tropical storm (SSHWS)
Temporary cyclone south Esami2020trackLucas
DurationFebruary 17 – February 20
Peak intensity110 km/h (70 mph) (10-min)  980 hPa (mbar)

Intense Tropical Cyclone Francisco

Intense tropical cyclone (MFR)
Category 4 tropical cyclone (SSHWS)
Temporary cyclone south Francisco2020trackLucas
DurationFebruary 27 – March 10
Peak intensity205 km/h (125 mph) (10-min)  935 hPa (mbar)

Tropical Depression 08

Tropical depression (MFR)
Tropical depression (SSHWS)
Temporary cyclone south TD082020trackLucas
DurationMarch 1 – March 2
Peak intensity55 km/h (35 mph) (10-min)  1006 hPa (mbar)

Intense Tropical Cyclone Gabekile

Intense tropical cyclone (MFR)
Category 3 tropical cyclone (SSHWS)
Temporary cyclone south Gabekile2020trackLucas
DurationMarch 7 – March 14
Peak intensity165 km/h (105 mph) (10-min)  950 hPa (mbar)

Tropical Cyclone Herold

Tropical cyclone (MFR)
Category 1 tropical cyclone (SSHWS)
Temporary cyclone south Herold2020trackLucas
DurationMarch 13 – March 20
Peak intensity140 km/h (85 mph) (10-min)  965 hPa (mbar)

Intense Tropical Cyclone Irondro

Intense tropical cyclone (MFR)
Category 4 tropical cyclone (SSHWS)
Temporary cyclone south Irondro2020trackLucas
DurationMarch 28 – April 13
Peak intensity215 km/h (130 mph) (10-min)  935 hPa (mbar)

Severe Tropical Storm Jeruto

Severe tropical storm (MFR)
Tropical storm (SSHWS)
Temporary cyclone south Jeruto2020trackLucas
DurationApril 29 – May 1
Peak intensity110 km/h (70 mph) (10-min)  985 hPa (mbar)


System 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.

  • Ambali
  • Belna
  • Calvinia
  • Diane
  • Esami
  • Francisco
  • Gabekile
  • Herold
  • Irondro
  • Jeruto
  • Kundai (unused)
  • Lisebo (unused)
  • Michel (unused)
  • Nousra (unused)
  • Olivier (unused)
  • Pokera (unused)
  • Quincy (unused)
  • Rebaone (unused)
  • Salama (unused)
  • Tristan (unused)
  • Ursula (unused)
  • Violet (unused)
  • Wilson (unused)
  • Xila (unused)
  • Yekela (unused)
  • Zania (unused)
Community content is available under CC-BY-SA unless otherwise noted.