Hurricane History Map

1984 Eastern and central Pacific season

21 storms formed in the Eastern and central Pacific basin in 1984, from 17 May 1984 to 8 November 1984.

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Years1984
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 1984 season in numbers

The record holds 21 storms for the 1984 Eastern and central Pacific season, of which 21 had names.21 reached tropical storm strength (34 knots or more), 13 reached hurricane strength (category 1 or more) and 7 were major (category 3 or more).

  • 21storms
  • 21tropical storm strength or more
  • 13hurricane strength or more
  • 7major (category 3 to 5)
  • 194accumulated 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 1984

  • Douglas (1984)25 June 1984 to 6 July 1984, peak Category 4 (125 kt)
  • Elida (1984)28 June 1984 to 8 July 1984, peak Category 4 (115 kt)
  • Iselle (1984)3 August 1984 to 12 August 1984, peak Category 4 (115 kt)
  • Norbert (1984)14 September 1984 to 26 September 1984, peak Category 4 (115 kt)
  • Genevieve (1984)7 July 1984 to 14 July 1984, peak Category 3 (100 kt)

All 21 storms of 1984

StormPeak
Alma Tropical storm
Boris Category 1
Cristina Category 2
Douglas Category 4
Elida Category 4
Fausto Category 2
Genevieve Category 3
Hernan Tropical storm
Iselle Category 4
Julio Tropical storm
Kenna Tropical storm
Keli Category 3
Lala Tropical storm
Lowell Category 1
Moke Tropical storm
Marie Category 1
Norbert Category 4
Odile Category 2
Polo Category 3
Rachel Tropical storm
Simon Tropical storm

← 1983 · 1985 → · All seasons

Other basins in 1984

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