Hurricane History Map

Cyclone Alison path, 1975

South Pacific and Australian region basin, 3 March 1975 to 13 March 1975. Its recorded track is shown on the map and selected for you.

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Years1842 to 2026
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.

What the record says

Alison was a cyclone in the South Pacific and Australian region basin that lasted about 10 days, from 3 March 1975 to 13 March 1975. Its peak was Category 3 (97 kt) on 7 March 1975, with a 1-minute sustained wind of 97 kt (112 mph, 180 km/h). Its lowest recorded pressure was 945 hPa.

  • Category 3peak intensity
  • 97 ktpeak wind (112 mph)
  • 945 hPalowest pressure
  • 10 dayslifetime

Source of the peak wind: RSMC Wellington (MetService New Zealand), converted from a 10-minute wind to a 1-minute equivalent. The regional forecast centre (RSMC Wellington (MetService New Zealand)) gave a peak of 85 kt on its own averaging convention (10-minute winds), so the two figures differ.

It has its own page because it reached category 3 or stronger.

This page gives the official record's figures. It does not describe the human cost of the storm, which is far larger than any wind speed or pressure here.

Where it came ashore

A landfall here is the first tropical position over land after time at sea, so it is within about six hours of the real event. The record shows up to 8.

Countries it came within 50 km of

Strongest effect first.

How to read this track

The line joins the storm's six-hourly positions with straight lines, coloured by its intensity at each point, so it shows how the storm strengthened and weakened. The real path curved between the positions. A dashed grey stretch means the storm had become post-tropical. Records before the satellite era (about the 1960s) are estimates.

Source: NOAA NCEI IBTrACS, public domain. See data sources and caveats.

Other notable storms of the 1975 South Pacific and Australian region season

Other notable storms near New Caledonia

  • Niran (2021)26 February 2021 to 7 March 2021, peak Category 5 (140 kt), 931 hPa
  • Erica (2003)1 March 2003 to 17 March 2003, peak Category 4 (130 kt), 915 hPa
  • Esau (1992)24 February 1992 to 9 March 1992, peak Category 4 (130 kt), 925 hPa
  • Harry (1989)6 February 1989 to 23 February 1989, peak Category 4 (130 kt), 925 hPa
  • Beni (2003)20 January 2003 to 5 February 2003, peak Category 4 (125 kt), 920 hPa

The 1975 South Pacific and Australian region season · All notable storms

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