The 2021 season

Super Typhoon Chanthu (2021)

Super Typhoon Chanthu reached Category 5 in the Western Pacific between September 5, 2021 and September 20, 2021, with a lowest pressure of 902 mb, and made landfall.

Track and intensity

The whole track of Super Typhoon Chanthu, colored by strength, with the other storms of the 2021 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 5, 2021 to September 20, 2021
Peak strength
Category 5, 155 kt (178 mph)
Lowest pressure
902 mb (26.64 inHg)
Landfall
Yes
Accumulated cyclone energy
40.9
Identifier
WP192021

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Sep 5, 06:0012.4N 140.5E1006 mbTropical storm
Sep 5, 12:0013.0N 139.9E1008 mbTropical storm
Sep 5, 18:0013.4N 138.9E20 kt1006 mbDisturbance
Sep 6, 00:0013.5N 138.6E25 kt1004 mbTropical depression
Sep 6, 06:0014.1N 138.5E30 kt1001 mbTropical depression
Sep 6, 12:0014.8N 137.9E35 kt999 mbTropical storm
Sep 6, 18:0015.2N 137.4E45 kt997 mbTropical storm
Sep 7, 00:0015.6N 136.6E50 kt995 mbTropical storm
Sep 7, 06:0016.2N 135.7E65 kt985 mbTyphoon
Sep 7, 12:0016.3N 134.6E95 kt966 mbTyphoon
Sep 7, 18:0016.2N 133.5E125 kt937 mbTyphoon
Sep 8, 00:0016.0N 132.3E130 kt932 mbSuper typhoon
Sep 8, 06:0015.6N 131.3E140 kt922 mbSuper typhoon
Sep 8, 12:0015.5N 130.3E130 kt935 mbSuper typhoon
Sep 8, 18:0015.4N 129.1E135 kt929 mbSuper typhoon
Sep 9, 00:0015.4N 128.0E140 kt924 mbSuper typhoon
Sep 9, 06:0015.8N 127.1E130 kt932 mbSuper typhoon
Sep 9, 12:0016.1N 125.9E120 kt942 mbTyphoon
Sep 9, 18:0016.6N 124.9E125 kt936 mbTyphoon
Sep 10, 00:0017.1N 124.1E135 kt928 mbSuper typhoon
Sep 10, 06:0017.8N 123.5E145 kt916 mbSuper typhoon
Sep 10, 12:0018.8N 122.8E150 kt911 mbSuper typhoon
Sep 10, 18:0019.5N 122.3E155 kt902 mbSuper typhoon
Sep 11, 00:0020.3N 122.0E145 kt915 mbSuper typhoon
Sep 11, 06:0021.0N 121.5E130 kt925 mbSuper typhoon
Sep 11, 12:0021.8N 121.8E110 kt945 mbTyphoon
Sep 11, 18:0022.8N 122.0E110 kt944 mbTyphoon
Sep 12, 00:0023.8N 122.3E105 kt948 mbTyphoon
Sep 12, 06:0025.3N 122.3E105 kt943 mbTyphoon
Sep 12, 12:0026.3N 122.7E95 kt949 mbTyphoon
Sep 12, 18:0027.6N 123.1E90 kt953 mbTyphoon
Sep 13, 00:0029.1N 123.6E85 kt959 mbTyphoon
Sep 13, 06:0030.7N 123.4E75 kt968 mbTyphoon
Sep 13, 12:0030.9N 123.2E65 kt975 mbTyphoon
Sep 13, 18:0031.5N 123.6E55 kt980 mbTropical storm
Sep 14, 00:0031.3N 123.8E40 kt990 mbTropical storm
Sep 14, 06:0030.9N 124.3E40 kt991 mbTropical storm
Sep 14, 12:0030.5N 124.8E35 kt994 mbTropical storm
Sep 14, 18:0030.3N 125.3E35 kt996 mbTropical storm
Sep 15, 00:0030.2N 125.7E40 kt994 mbTropical storm
Sep 15, 06:0030.1N 125.6E45 kt991 mbTropical storm
Sep 15, 12:0030.0N 125.4E45 kt991 mbTropical storm
Sep 15, 18:0030.2N 125.2E50 kt987 mbTropical storm
Sep 16, 00:0030.4N 125.1E55 kt982 mbTropical storm
Sep 16, 06:0030.9N 125.4E55 kt983 mbTropical storm
Sep 16, 12:0031.3N 125.9E50 kt986 mbTropical storm
Sep 16, 18:0032.3N 126.4E45 kt989 mbTropical storm
Sep 17, 00:0032.9N 127.5E40 kt994 mbTropical storm
Sep 17, 06:0033.4N 129.1E40 kt993 mbTropical storm
Sep 17, 12:0033.7N 131.5E35 kt999 mbTropical storm
Sep 17, 18:0033.9N 134.2E30 kt1000 mbTropical depression
Sep 18, 00:0034.5N 136.8E25 kt1001 mbTropical depression
Sep 18, 06:0034.4N 137.7E25 kt1000 mbTropical depression
Sep 18, 12:0034.5N 139.1E1004 mbExtratropical
Sep 18, 18:0034.1N 140.3E1006 mbExtratropical
Sep 19, 00:0033.6N 140.9E1008 mbExtratropical
Sep 19, 06:0033.1N 141.2E1008 mbExtratropical
Sep 19, 12:0032.5N 141.2E1010 mbExtratropical
Sep 19, 18:0032.2N 141.0E1010 mbExtratropical
Sep 20, 00:0031.8N 140.7E1010 mbExtratropical

Other Western Pacific storms of 2021

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.