Hurricane History Map

2011 North Atlantic season

20 storms formed in the North Atlantic basin in 2011, from 28 June 2011 to 12 November 2011.

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Years2011
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 2011 season in numbers

The record holds 20 storms for the 2011 North Atlantic season, of which 18 had names.19 reached tropical storm strength (34 knots or more), 7 reached hurricane strength (category 1 or more) and 4 were major (category 3 or more).

  • 20storms
  • 19tropical storm strength or more
  • 7hurricane strength or more
  • 4major (category 3 to 5)
  • 126accumulated 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 2011

  • Katia (2011)28 August 2011 to 12 September 2011, peak Category 4 (120 kt), 942 hPa
  • Ophelia (2011)20 September 2011 to 4 October 2011, peak Category 4 (120 kt), 940 hPa
  • Irene (2011)21 August 2011 to 30 August 2011, peak Category 3 (105 kt), 942 hPa
  • Rina (2011)22 October 2011 to 29 October 2011, peak Category 3 (100 kt), 966 hPa
  • Philippe (2011)23 September 2011 to 9 October 2011, peak Category 1 (80 kt), 976 hPa

All 20 storms of 2011

StormPeak
Arlene Tropical storm
Bret Tropical storm
Cindy Tropical storm
Don Tropical storm
Emily Tropical storm
Franklin Tropical storm
Gert Tropical storm
Harvey Tropical storm
Irene Category 3
Unnamed storm Tropical depression
Jose Tropical storm
Katia Category 4
Unnamed storm Tropical storm
Lee Tropical storm
Maria Category 1
Nate Category 1
Ophelia Category 4
Philippe Category 1
Rina Category 3
Sean Tropical storm

← 2010 · 2012 → · All seasons

Other basins in 2011

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