Hurricane History Map

1971 Eastern and central Pacific season

19 storms formed in the Eastern and central Pacific basin in 1971, from 21 May 1971 to 29 November 1971.

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Years1971
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 1971 season in numbers

The record holds 19 storms for the 1971 Eastern and central Pacific season, of which 18 had names.18 reached tropical storm strength (34 knots or more), 12 reached hurricane strength (category 1 or more) and 5 were major (category 3 or more).

  • 19storms
  • 18tropical storm strength or more
  • 12hurricane strength or more
  • 5major (category 3 to 5)
  • 124accumulated 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 1971

  • Denise (1971)2 July 1971 to 14 July 1971, peak Category 4 (120 kt), 951 hPa
  • Priscilla (1971)6 October 1971 to 13 October 1971, peak Category 3 (110 kt), 951 hPa
  • Francene:francesca (1971)18 July 1971 to 23 July 1971, peak Category 3 (100 kt), 991 hPa
  • Ilsa (1971)31 July 1971 to 8 August 1971, peak Category 3 (100 kt), 978 hPa
  • Monica (1971)29 August 1971 to 5 September 1971, peak Category 3 (100 kt), 1,005 hPa

All 19 storms of 1971

StormPeak
Agatha Category 2
Bridget Category 2
Carlotta Category 1
Denise Category 4
Eleanor Tropical storm
Mary Category 1
Francene:francesca Category 3
Georgette Tropical storm
Hilary Category 2
Ilsa Category 3
Jewel Tropical storm
Katrina Tropical storm
Unnamed storm Tropical depression
Lily Category 1
Monica Category 3
Nanette Category 2
Priscilla Category 3
Ramona Tropical storm
Sharon Tropical storm

← 1970 · 1972 → · All seasons

Other basins in 1971

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