Hurricane History Map

2011 Western North Pacific season

28 storms formed in the Western North Pacific basin in 2011, from 1 April 2011 to 19 December 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 28 storms for the 2011 Western North Pacific season, of which 21 had names.18 reached tropical storm strength (34 knots or more), 10 reached typhoon strength (category 1 or more) and 7 were major (category 3 or more). 1 has no wind speed in the record.

  • 28storms
  • 18tropical storm strength or more
  • 10typhoon strength or more
  • 7major (category 3 to 5)
  • 193accumulated 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

  • Songda (2011)19 May 2011 to 2 June 2011, peak Category 5 (140 kt), 920 hPa
  • Muifa (2011)26 July 2011 to 15 August 2011, peak Category 5 (140 kt), 930 hPa
  • Nanmadol (2011)21 August 2011 to 31 August 2011, peak Category 5 (140 kt), 925 hPa
  • Nalgae (2011)26 September 2011 to 5 October 2011, peak Category 4 (130 kt), 935 hPa
  • Ma-On (2011)10 July 2011 to 31 July 2011, peak Category 4 (115 kt), 935 hPa

All 28 storms of 2011

StormPeak
Unnamed storm Tropical depression
Unnamed storm Tropical depression
Aere Tropical storm
Songda Category 5
Unnamed storm Unknown intensity
Sarika Tropical depression
Haima Tropical storm
Meari Tropical storm
Ma-On Category 4
Tokage Tropical depression
Nock-Ten Category 1
Muifa Category 5
Merbok Category 1
Unnamed storm Tropical depression
Nanmadol Category 5
Talas Tropical storm
Noru Tropical storm
Kulap Tropical storm
Roke Category 4
Sonca Category 2
Nesat Category 4
Haitang Tropical storm
Nalgae Category 4
Banyan Tropical depression
Unnamed storm Tropical depression
Unnamed storm Tropical depression
Unnamed storm Tropical depression
Washi Tropical storm

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Other basins in 2011

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