The 2011 season

Super Typhoon Nanmadol (2011)

Super Typhoon Nanmadol reached Category 5 in the Western Pacific between August 21, 2011 and August 31, 2011, with a lowest pressure of 918 mb, and made landfall.

Track and intensity

The whole track of Super Typhoon Nanmadol, colored by strength, with the other storms of the 2011 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.

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The storm

Basin
Western Pacific
Dates
August 21, 2011 to August 31, 2011
Peak strength
Category 5, 140 kt (161 mph)
Lowest pressure
918 mb (27.11 inHg)
Landfall
Yes
Accumulated cyclone energy
22.0
Tropical-storm-force wind reached
145 nmi (269 km, 167 mi) from the center at its widest
Hurricane-force wind reached
50 nmi (93 km, 58 mi) from the center at its widest
Eyewall radius at its peak
15 nmi (28 km, 17 mi)
Overall size
230 nmi (426 km, 265 mi) to the outermost closed isobar
Fastest the center moved
10 kt (12 mph)
Identifier
WP142011

Deaths and damage

No source this site reads carries a casualty or damage figure for this storm.

Track

Time (UTC)PositionWindPressureStatus
Aug 21, 06:0011.9N 128.8EDisturbance
Aug 21, 12:0012.6N 128.5E1004 mbMixed
Aug 21, 18:0013.2N 128.2E1004 mbMixed
Aug 22, 00:0013.9N 127.9E1004 mbMixed
Aug 22, 06:0014.3N 127.7E1004 mbTropical storm
Aug 22, 12:0015.6N 127.8E25 kt1004 mbTropical depression
Aug 22, 18:0015.6N 127.8E30 kt1000 mbTropical depression
Aug 23, 00:0015.6N 127.7E30 kt1000 mbTropical depression
Aug 23, 06:0015.7N 127.7E30 kt1000 mbTropical depression
Aug 23, 12:0015.7N 127.5E40 kt993 mbTropical storm
Aug 23, 18:0015.7N 127.2E45 kt989 mbTropical storm
Aug 24, 00:0015.9N 127.0E50 kt985 mbTropical storm
Aug 24, 06:0015.8N 126.7E55 kt982 mbTropical storm
Aug 24, 12:0015.8N 126.4E60 kt978 mbTropical storm
Aug 24, 18:0015.9N 126.0E65 kt974 mbTyphoon
Aug 25, 00:0016.1N 125.6E75 kt967 mbTyphoon
Aug 25, 06:0016.3N 125.2E85 kt959 mbTyphoon
Aug 25, 12:0016.5N 124.6E95 kt952 mbTyphoon
Aug 25, 18:0016.4N 124.2E125 kt929 mbTyphoon
Aug 26, 00:0016.7N 123.9E135 kt922 mbSuper typhoon
Aug 26, 06:0017.2N 123.6E140 kt918 mbSuper typhoon
Aug 26, 12:0017.6N 123.3E140 kt918 mbSuper typhoon
Aug 26, 18:0018.0N 122.7E140 kt918 mbSuper typhoon
Aug 27, 00:0018.1N 122.4E125 kt929 mbTyphoon
Aug 27, 06:0018.6N 122.0E120 kt933 mbTyphoon
Aug 27, 12:0019.2N 121.7E110 kt941 mbTyphoon
Aug 27, 18:0019.6N 121.5E100 kt948 mbTyphoon
Aug 28, 00:0020.2N 121.3E85 kt959 mbTyphoon
Aug 28, 06:0021.0N 121.1E85 kt959 mbTyphoon
Aug 28, 12:0021.6N 121.0E75 kt967 mbTyphoon
Aug 28, 18:0022.2N 120.9E70 kt970 mbTyphoon
Aug 29, 00:0022.7N 120.5E65 kt974 mbTyphoon
Aug 29, 06:0023.2N 120.0E60 kt978 mbTropical storm
Aug 29, 12:0023.5N 119.6E45 kt989 mbTropical storm
Aug 29, 18:0023.9N 119.3E40 kt993 mbTropical storm
Aug 30, 00:0024.1N 119.2E30 kt1000 mbTropical depression
Aug 30, 06:0024.3N 119.2E30 kt1000 mbTropical depression
Aug 30, 12:0024.4N 119.1E25 kt1004 mbTropical depression
Aug 30, 18:0024.4N 119.0E20 kt1007 mbDisturbance
Aug 31, 00:0024.7N 118.7E996 mbTropical storm
Aug 31, 06:0024.7N 117.9E996 mbTropical storm
Aug 31, 12:0024.4N 116.9E998 mbTropical storm

Other Western Pacific storms of 2011

What this means

A best track is the record a warning agency settles on after the storm, not what it said at the time: position, maximum sustained wind and central pressure every six hours, revised against every observation that came in later. Category is the Saffir-Simpson scale, which runs from Category 1 at 64 kt to Category 5 at 137 kt and reads wind only, so it says nothing about surge or rain. Accumulated cyclone energy adds up the square of the wind through the storm's life, so it counts strength and duration together.

Sources

Storm history from NOAA NCEI’s International Best Track Archive for Climate Stewardship (IBTrACS), which merges the official best track of every warning agency. Live storms, cones, watches and warnings from the National Hurricane Center and the Central Pacific Hurricane Center. Archived radar from NOAA’s Level II archive.