The 2015 season

Super Typhoon Koppu (2015)

Super Typhoon Koppu reached Category 4 in the Western Pacific between October 12, 2015 and October 21, 2015, with a lowest pressure of 926 mb, and made landfall.

Track and intensity

The whole track of Super Typhoon Koppu, colored by strength, with the other storms of the 2015 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
October 12, 2015 to October 21, 2015
Peak strength
Category 4, 130 kt (150 mph)
Lowest pressure
926 mb (27.34 inHg)
Landfall
Yes
Accumulated cyclone energy
14.8
Tropical-storm-force wind reached
155 nmi (287 km, 178 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
240 nmi (444 km, 276 mi) to the outermost closed isobar
Peak gust in the best track
125 kt (144 mph)
Fastest the center moved
26 kt (30 mph)
Identifier
WP242015

Radar at PGUA as it neared land, Oct 12, 18:00 UTC

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Oct 12, 00:0013.9N 150.8E1004 mbTropical storm
Oct 12, 06:0014.2N 149.3E20 kt1003 mbTropical wave
Oct 12, 12:0014.8N 148.0E25 kt1004 mbTropical wave
Oct 12, 18:0015.4N 145.6E25 kt1004 mbTropical wave
Oct 13, 00:0015.9N 143.2E25 kt1004 mbTropical depression
Oct 13, 06:0016.2N 141.3E30 kt1000 mbTropical depression
Oct 13, 12:0015.9N 138.9E40 kt993 mbTropical storm
Oct 13, 18:0015.9N 137.3E40 kt993 mbTropical storm
Oct 14, 00:0015.7N 135.8E40 kt993 mbTropical storm
Oct 14, 06:0015.7N 134.7E40 kt993 mbTropical storm
Oct 14, 12:0015.4N 133.6E40 kt993 mbTropical storm
Oct 14, 18:0015.4N 132.7E40 kt993 mbTropical storm
Oct 15, 00:0015.4N 131.5E45 kt989 mbTropical storm
Oct 15, 06:0015.7N 130.1E50 kt985 mbTropical storm
Oct 15, 12:0015.7N 129.2E60 kt978 mbTropical storm
Oct 15, 18:0015.5N 128.3E70 kt970 mbTyphoon
Oct 16, 00:0015.5N 127.5E75 kt967 mbTyphoon
Oct 16, 06:0015.5N 126.7E80 kt963 mbTyphoon
Oct 16, 12:0015.5N 125.9E85 kt959 mbTyphoon
Oct 16, 18:0015.6N 125.1E95 kt952 mbTyphoon
Oct 17, 00:0015.7N 124.5E105 kt944 mbTyphoon
Oct 17, 06:0015.8N 123.8E115 kt937 mbTyphoon
Oct 17, 12:0015.9N 123.1E130 kt926 mbSuper typhoon
Oct 17, 18:0016.0N 122.1E120 kt933 mbTyphoon
Oct 18, 00:0015.8N 121.3E105 kt944 mbTyphoon
Oct 18, 06:0016.2N 120.5E90 kt956 mbTyphoon
Oct 18, 12:0016.5N 120.0E75 kt967 mbTyphoon
Oct 18, 18:0017.0N 119.8E65 kt974 mbTyphoon
Oct 19, 00:0017.6N 120.0E55 kt982 mbTropical storm
Oct 19, 06:0017.9N 120.1E50 kt985 mbTropical storm
Oct 19, 12:0018.1N 120.2E45 kt989 mbTropical storm
Oct 19, 18:0018.3N 120.2E35 kt996 mbTropical storm
Oct 20, 00:0018.8N 120.4E30 kt1000 mbTropical depression
Oct 20, 06:0019.1N 120.7E20 kt1007 mbDisturbance
Oct 20, 12:0019.3N 121.3E35 kt998 mbTropical storm
Oct 20, 18:0019.3N 121.8E35 kt998 mbTropical storm
Oct 21, 00:0019.4N 122.3E35 kt998 mbTropical storm
Oct 21, 06:0019.6N 122.7E1000 mbTropical storm

Other Western Pacific storms of 2015

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.