Hurricane History Map

1999 South-West Indian season

22 storms formed in the South-West Indian basin in 1999, from 20 July 1998 to 25 April 1999.

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Years1999
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 1999 season in numbers

The record holds 22 storms for the 1999 South-West Indian season, of which 13 had names.19 reached tropical storm strength (34 knots or more), 9 reached cyclone strength (category 1 or more) and 5 were major (category 3 or more). 2 have no wind speed in the record.

  • 22storms
  • 19tropical storm strength or more
  • 9cyclone strength or more
  • 5major (category 3 to 5)
  • 127accumulated 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 1999

  • Evrina:frederic (1999)25 March 1999 to 10 April 1999, peak Category 5 (140 kt), 920 hPa
  • Gwenda (1999)2 April 1999 to 8 April 1999, peak Category 4 (130 kt), 900 hPa
  • Vance (1999)14 March 1999 to 23 March 1999, peak Category 4 (125 kt), 913 hPa
  • Davina (1999)1 March 1999 to 19 March 1999, peak Category 3 (110 kt), 930 hPa
  • Elaine (1999)15 March 1999 to 20 March 1999, peak Category 3 (100 kt), 945 hPa

All 22 storms of 1999

StormPeak
Unnamed storm Tropical storm
Unnamed storm Tropical storm
Zelia Tropical storm
Alison Category 1
Billy Category 1
Cathy Tropical storm
Unnamed storm Unknown intensity
Alda Category 1
Birenda:damien Category 1
Chikita Tropical storm
Unnamed storm Tropical storm
Unnamed storm Tropical storm
Unnamed storm Tropical depression
Davina Category 3
Unnamed storm Tropical storm
Unnamed storm Tropical storm
Vance Category 4
Elaine Category 3
Unnamed storm Unknown intensity
Evrina:frederic Category 5
Gwenda Category 4
Hamish Tropical storm

← 1998 · 2000 → · All seasons

Other basins in 1999

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