Hurricane History Map

1975 South-West Indian season

23 storms formed in the South-West Indian basin in 1975, from 17 October 1974 to 25 May 1975.

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Years1975
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 1975 season in numbers

The record holds 23 storms for the 1975 South-West Indian season, of which 21 had names.11 reached tropical storm strength (34 knots or more), 5 reached cyclone strength (category 1 or more) and 1 were major (category 3 or more). 12 have no wind speed in the record.

  • 23storms
  • 11tropical storm strength or more
  • 5cyclone strength or more
  • 1major (category 3 to 5)
  • 51accumulated 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 1975

  • Trixie (1975)15 February 1975 to 22 February 1975, peak Category 4 (131 kt), 925 hPa
  • Deborah:robyn (1975)14 January 1975 to 29 January 1975, peak Category 2 (91 kt), 964 hPa
  • Beverley (1975)22 March 1975 to 3 April 1975, peak Category 1 (80 kt), 969 hPa
  • Norah (1975)28 October 1974 to 4 November 1974, peak Category 1 (68 kt), 981 hPa
  • Penny (1975)6 November 1974 to 16 November 1974, peak Category 1 (68 kt), 981 hPa

All 23 storms of 1975

StormPeak
Marcia Tropical storm
Norah Category 1
Penny Category 1
Selma Tropical storm
Adele Unknown intensity
Unnamed storm Unknown intensity
Blandine Unknown intensity
Camille Unknown intensity
Deborah:robyn Category 2
Unnamed storm Unknown intensity
Elsa Unknown intensity
Fernande Unknown intensity
Gervaise Unknown intensity
Shirley Tropical storm
Trixie Category 4
Helose Unknown intensity
Ines Unknown intensity
Wilma Tropical storm
Vida Tropical storm
Beverley Category 1
Junon Unknown intensity
Clara Unknown intensity
Denise Tropical storm

← 1974 · 1976 → · All seasons

Other basins in 1975

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