Hurricane History Map

2020 South-West Indian season

17 storms formed in the South-West Indian basin in 2020, from 2 December 2019 to 23 May 2020.

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Years2020
Ocean basin

Choosing a minimum category hides storms with no wind speed in the record. To see which storms have passed near you, search a town or ZIP code, or tap the map.

Key
  • Tropical depression Winds below 34 knots (39 mph)
  • Tropical storm 34 to 63 knots (39 to 73 mph)
  • Category 1 64 to 82 knots (74 to 95 mph)
  • Category 2 83 to 95 knots (96 to 110 mph)
  • Category 3 96 to 112 knots (111 to 129 mph), major
  • Category 4 113 to 136 knots (130 to 156 mph), major
  • Category 5 137 knots (157 mph) or more, major
  • Unknown intensity No wind speed in the record
  • Post-tropical Storm has become post-tropical (dashed line)

How to read the lines. Each line is the track of one storm, drawn through its six-hourly positions and coloured by its intensity at each point (the Saffir-Simpson scale), so a line changes colour as the storm strengthens or weakens. Tap a line for its details, or tap anywhere else to see which storms have passed nearby. Weaker storms appear as you zoom in. Hurricanes, typhoons and cyclones are the same kind of storm with different names in different oceans.

The 2020 season in numbers

The record holds 17 storms for the 2020 South-West Indian season, of which 15 had names.17 reached tropical storm strength (34 knots or more), 9 reached cyclone strength (category 1 or more) and 5 were major (category 3 or more).

  • 17storms
  • 17tropical storm strength or more
  • 9cyclone strength or more
  • 5major (category 3 to 5)
  • 90accumulated cyclone energy

Accumulated cyclone energy adds up the squared wind speed of every position of 34 knots or more, divided by 10,000. It is approximate here because the winds are 1-minute equivalents, and it is mostly useful for comparing seasons of one basin.

Strongest storms of 2020

  • Ambali (2020)3 December 2019 to 9 December 2019, peak Category 5 (140 kt), 930 hPa
  • Belna (2020)2 December 2019 to 11 December 2019, peak Category 3 (105 kt), 965 hPa
  • Irondro (2020)1 April 2020 to 7 April 2020, peak Category 3 (105 kt), 950 hPa
  • Ferdinand (2020)22 February 2020 to 1 March 2020, peak Category 3 (100 kt), 951 hPa
  • Herold (2020)12 March 2020 to 21 March 2020, peak Category 3 (100 kt), 955 hPa

All 17 storms of 2020

StormPeak
Belna Category 3
Ambali Category 5
Calvinia Category 1
Claudia Category 2
Blake Tropical storm
Unnamed storm Tropical storm
Diane Tropical storm
Esami Tropical storm
Damien Category 2
Francisco Tropical storm
Gabekile Category 2
Ferdinand Category 3
Unnamed storm Tropical storm
Herold Category 3
Irondro Category 3
Jeruto Tropical storm
Mangga Tropical storm

← 2019 · 2021 → · All seasons

Other basins in 2020

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