Hurricane History Map

1970 South Pacific and Australian region season

18 storms formed in the South Pacific and Australian region basin in 1970, from 14 November 1969 to 23 June 1970.

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Years1970
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 1970 season in numbers

The record holds 18 storms for the 1970 South Pacific and Australian region season, of which 9 had names.7 reached tropical storm strength (34 knots or more), 3 reached cyclone strength (category 1 or more) and 0 were major (category 3 or more). 7 have no wind speed in the record.

  • 18storms
  • 7tropical storm strength or more
  • 3cyclone strength or more
  • 0major (category 3 to 5)
  • 24accumulated 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 1970

  • Dolly (1970)11 February 1970 to 25 February 1970, peak Category 1 (80 kt), 965 hPa
  • Emma (1970)27 February 1970 to 6 March 1970, peak Category 1 (80 kt), 965 hPa
  • Ada (1970)3 January 1970 to 19 January 1970, peak Category 1 (70 kt), 997 hPa
  • Gillian (1970)7 April 1970 to 11 April 1970, peak Tropical storm (63 kt), 980 hPa
  • Helen (1970)13 April 1970 to 17 April 1970, peak Tropical storm (46 kt), 990 hPa

All 18 storms of 1970

StormPeak
Unnamed storm Tropical depression
Ada Category 1
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Dawn Tropical storm
Florence Tropical storm
Dolly Category 1
Unnamed storm Unknown intensity
Emma Category 1
Unnamed storm Tropical depression
Unnamed storm Unknown intensity
Cindy Tropical depression
Unnamed storm Unknown intensity
Gillian Tropical storm
Helen Tropical storm
Isa Tropical depression
Unnamed storm Unknown intensity

← 1969 · 1971 → · All seasons

Other basins in 1970

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