Hurricane History Map

1970 Western North Pacific season

50 storms formed in the Western North Pacific basin in 1970, from 19 February 1970 to 17 December 1970.

Tap or scroll to load the interactive map

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 50 storms for the 1970 Western North Pacific season, of which 23 had names.23 reached tropical storm strength (34 knots or more), 12 reached typhoon strength (category 1 or more) and 11 were major (category 3 or more). 27 have no wind speed in the record.

  • 50storms
  • 23tropical storm strength or more
  • 12typhoon strength or more
  • 11major (category 3 to 5)
  • 287accumulated 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

  • Hope (1970)18 September 1970 to 30 September 1970, peak Category 5 (150 kt), 900 hPa
  • Joan (1970)9 October 1970 to 18 October 1970, peak Category 5 (150 kt), 905 hPa
  • Olga (1970)26 June 1970 to 7 July 1970, peak Category 5 (140 kt), 905 hPa
  • Georgia (1970)7 September 1970 to 16 September 1970, peak Category 5 (140 kt), 905 hPa
  • Anita (1970)13 August 1970 to 24 August 1970, peak Category 4 (135 kt), 910 hPa

All 50 storms of 1970

StormPeak
Nancy Category 4
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Pamela Tropical storm
Olga Category 5
Ruby Tropical storm
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Sally Tropical storm
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Violet Tropical storm
Wilda Category 3
Anita Category 4
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Billie Category 3
Unnamed storm Unknown intensity
Clara Category 2
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Fran Tropical storm
Ellen Tropical storm
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Georgia Category 5
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Hope Category 5
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Iris Category 3
Unnamed storm Unknown intensity
Unnamed storm Unknown intensity
Joan Category 5
Kate Category 4
Unnamed storm Unknown intensity
Louise Tropical storm
Marge Tropical storm
Nora Tropical storm
Opal Tropical storm
Patsy Category 4
Ruth Tropical storm
Unnamed storm Unknown intensity

← 1969 · 1971 → · All seasons

Other basins in 1970

Embed this map

Copy this code into your web page. It is free to use. Please keep the link under the map, as it is how people find where the map comes from.