Hurricane History Map

1984 North Atlantic season

20 storms formed in the North Atlantic basin in 1984, from 11 June 1984 to 24 December 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 20 storms for the 1984 North Atlantic season, of which 12 had names.13 reached tropical storm strength (34 knots or more), 5 reached hurricane strength (category 1 or more) and 1 were major (category 3 or more).

  • 20storms
  • 13tropical storm strength or more
  • 5hurricane strength or more
  • 1major (category 3 to 5)
  • 84accumulated 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

  • Diana (1984)8 September 1984 to 16 September 1984, peak Category 4 (115 kt), 949 hPa
  • Josephine (1984)7 October 1984 to 21 October 1984, peak Category 2 (90 kt), 965 hPa
  • Klaus (1984)5 November 1984 to 13 November 1984, peak Category 1 (80 kt), 971 hPa
  • Lili (1984)12 December 1984 to 24 December 1984, peak Category 1 (70 kt), 980 hPa
  • Hortense (1984)23 September 1984 to 2 October 1984, peak Category 1 (65 kt), 993 hPa

All 20 storms of 1984

StormPeak
Unnamed storm Tropical depression
Unnamed storm Tropical depression
Unnamed storm Tropical depression
Unnamed storm Tropical depression
Unnamed storm Tropical storm
Arthur Tropical storm
Bertha Tropical storm
Cesar Tropical storm
Unnamed storm Tropical depression
Diana Category 4
Edouard Tropical storm
Fran Tropical storm
Gustav Tropical storm
Hortense Category 1
Isidore Tropical storm
Josephine Category 2
Unnamed storm Tropical depression
Klaus Category 1
Unnamed storm Tropical depression
Lili Category 1

← 1983 · 1985 → · All seasons

Other basins in 1984

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