Hurricane History Map

1947 North Atlantic season

10 storms formed in the North Atlantic basin in 1947, from 31 July 1947 to 22 October 1947.

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Years1947
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 1947 season in numbers

The record holds 10 storms for the 1947 North Atlantic season, of which 0 had names.10 reached tropical storm strength (34 knots or more), 5 reached hurricane strength (category 1 or more) and 2 were major (category 3 or more).

  • 10storms
  • 10tropical storm strength or more
  • 5hurricane strength or more
  • 2major (category 3 to 5)
  • 89accumulated 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 1947

  • Unnamed storm of September 1947 (North Atlantic)4 September 1947 to 21 September 1947, peak Category 4 (125 kt), 938 hPa
  • Unnamed storm of October 1947 (North Atlantic)17 October 1947 to 22 October 1947, peak Category 3 (105 kt), 961 hPa
  • Unnamed storm of August 1947 (North Atlantic)9 August 1947 to 16 August 1947, peak Category 2 (95 kt), 977 hPa
  • Unnamed storm of October 1947 (North Atlantic)8 October 1947 to 16 October 1947, peak Category 2 (90 kt), 966 hPa
  • Unnamed storm of August 1947 (North Atlantic)18 August 1947 to 27 August 1947, peak Category 1 (70 kt), 984 hPa

All 10 storms of 1947

StormPeak
Unnamed storm Tropical storm
Unnamed storm Category 2
Unnamed storm Category 1
Unnamed storm Category 4
Unnamed storm Tropical storm
Unnamed storm Tropical storm
Unnamed storm Tropical storm
Unnamed storm Tropical storm
Unnamed storm Category 2
Unnamed storm Category 3

← 1946 · 1948 → · All seasons

Other basins in 1947

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