The 2013 season

Super Typhoon Usagi (2013)

Super Typhoon Usagi reached Category 4 in the Western Pacific between September 16, 2013 and September 24, 2013, with a lowest pressure of 922 mb, and made landfall.

Track and intensity

The whole track of Super Typhoon Usagi, colored by strength, with the other storms of the 2013 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
September 16, 2013 to September 24, 2013
Peak strength
Category 4, 135 kt (155 mph)
Lowest pressure
922 mb (27.23 inHg)
Landfall
Yes
Accumulated cyclone energy
22.3
Tropical-storm-force wind reached
185 nmi (343 km, 213 mi) from the center at its widest
Hurricane-force wind reached
60 nmi (111 km, 69 mi) from the center at its widest
Eyewall radius at its peak
12 nmi (22 km, 14 mi)
Overall size
320 nmi (593 km, 368 mi) to the outermost closed isobar
Fastest the center moved
15 kt (17 mph)
Identifier
WP172013

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Sep 16, 00:0017.3N 132.0E1006 mbTropical storm
Sep 16, 06:0017.2N 132.4E20 kt1007 mbDisturbance
Sep 16, 12:0017.5N 132.3E20 kt1002 mbDisturbance
Sep 16, 18:0017.7N 132.0E25 kt1002 mbTropical depression
Sep 17, 00:0017.5N 131.7E25 kt1004 mbTropical depression
Sep 17, 06:0017.5N 131.4E30 kt1000 mbTropical depression
Sep 17, 12:0017.4N 131.0E40 kt993 mbTropical storm
Sep 17, 18:0017.3N 130.6E50 kt985 mbTropical storm
Sep 18, 00:0017.3N 130.2E50 kt985 mbTropical storm
Sep 18, 06:0017.3N 129.8E60 kt978 mbTropical storm
Sep 18, 12:0017.3N 129.4E75 kt967 mbTyphoon
Sep 18, 18:0017.1N 128.7E90 kt956 mbTyphoon
Sep 19, 00:0016.9N 128.5E95 kt952 mbTyphoon
Sep 19, 06:0017.5N 128.0E120 kt933 mbTyphoon
Sep 19, 12:0018.2N 127.2E135 kt922 mbSuper typhoon
Sep 19, 18:0018.8N 126.4E135 kt922 mbSuper typhoon
Sep 20, 00:0019.2N 125.5E135 kt922 mbSuper typhoon
Sep 20, 06:0019.8N 124.6E130 kt926 mbSuper typhoon
Sep 20, 12:0020.2N 123.7E130 kt926 mbSuper typhoon
Sep 20, 18:0020.4N 122.6E130 kt926 mbSuper typhoon
Sep 21, 00:0020.6N 121.7E120 kt933 mbTyphoon
Sep 21, 06:0020.8N 120.8E105 kt944 mbTyphoon
Sep 21, 12:0021.1N 119.8E85 kt959 mbTyphoon
Sep 21, 18:0021.4N 118.9E90 kt956 mbTyphoon
Sep 22, 00:0021.8N 117.9E95 kt952 mbTyphoon
Sep 22, 06:0022.4N 116.8E100 kt948 mbTyphoon
Sep 22, 12:0022.9N 115.3E80 kt963 mbTyphoon
Sep 22, 18:0023.3N 113.6E60 kt978 mbTropical storm
Sep 23, 00:0023.9N 112.6E55 kt982 mbExtratropical
Sep 23, 06:0024.6N 111.6E45 kt989 mbExtratropical
Sep 23, 12:0024.7N 110.1E998 mbTropical storm
Sep 23, 18:0025.0N 109.1E1000 mbMixed
Sep 24, 00:0024.9N 108.2E1004 mbMixed

Other Western Pacific storms of 2013

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.