The 2003 season

Typhoon Chan-Hom (2003)

Typhoon Chan-Hom reached Category 4 in the Western Pacific between May 18, 2003 and May 28, 2003, with a lowest pressure of 927 mb.

Track and intensity

The whole track of Typhoon Chan-Hom, colored by strength, with the other storms of the 2003 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
May 18, 2003 to May 28, 2003
Peak strength
Category 4, 115 kt (132 mph)
Lowest pressure
927 mb (27.37 inHg)
Landfall
No; closest approach 685 km (426 mi)
Accumulated cyclone energy
18.4
Identifier
WP042003

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
May 18, 00:004.0N 147.9E15 kt1006 mbTropical depression
May 18, 06:004.6N 148.2E15 kt1006 mbTropical depression
May 18, 12:005.2N 148.6E20 kt1004 mbTropical depression
May 18, 18:005.8N 149.0E20 kt1004 mbTropical depression
May 19, 00:006.3N 149.3E25 kt1002 mbTropical depression
May 19, 06:006.7N 149.8E35 kt997 mbTropical storm
May 19, 12:006.8N 150.4E35 kt997 mbTropical storm
May 19, 18:006.9N 150.8E35 kt997 mbTropical storm
May 20, 00:007.3N 151.0E35 kt997 mbTropical storm
May 20, 06:007.7N 150.8E35 kt997 mbTropical storm
May 20, 12:008.0N 150.6E45 kt991 mbTropical storm
May 20, 18:008.4N 150.4E55 kt984 mbTropical storm
May 21, 00:008.8N 150.3E55 kt984 mbTropical storm
May 21, 06:009.4N 150.6E55 kt984 mbTropical storm
May 21, 12:0010.3N 150.9E55 kt984 mbTropical storm
May 21, 18:0011.1N 151.0E60 kt980 mbTropical storm
May 22, 00:0011.8N 151.1E65 kt976 mbTyphoon
May 22, 06:0012.6N 151.2E65 kt976 mbTyphoon
May 22, 12:0013.3N 151.3E65 kt976 mbTyphoon
May 22, 18:0014.2N 151.3E65 kt976 mbTyphoon
May 23, 00:0014.9N 151.2E85 kt958 mbTyphoon
May 23, 06:0015.6N 151.2E95 kt949 mbTyphoon
May 23, 12:0016.4N 151.4E105 kt938 mbTyphoon
May 23, 18:0017.3N 151.5E115 kt927 mbTyphoon
May 24, 00:0018.2N 151.6E115 kt927 mbTyphoon
May 24, 06:0019.1N 152.1E115 kt927 mbTyphoon
May 24, 12:0020.0N 152.6E115 kt927 mbTyphoon
May 24, 18:0021.0N 153.8E115 kt927 mbTyphoon
May 25, 00:0022.4N 154.7E115 kt927 mbTyphoon
May 25, 06:0023.8N 155.6E90 kt954 mbTyphoon
May 25, 12:0025.2N 156.6E90 kt954 mbTyphoon
May 25, 18:0026.8N 157.5E65 kt976 mbTyphoon
May 26, 00:0028.3N 158.6E65 kt976 mbTyphoon
May 26, 06:0029.7N 160.4E55 kt984 mbTropical storm
May 26, 12:0031.0N 162.3E55 kt984 mbTropical storm
May 26, 18:0032.4N 164.5E45 kt991 mbTropical storm
May 27, 00:0033.9N 166.9E45 kt991 mbTropical storm
May 27, 06:0036.1N 170.9E45 kt991 mbTropical storm
May 27, 12:0035.6N 171.9E996 mbExtratropical
May 27, 18:0035.8N 174.4E1000 mbExtratropical
May 28, 00:0035.5N 175.7E1008 mbExtratropical
May 28, 06:0035.5N 177.7E1012 mbExtratropical

Other Western Pacific storms of 2003

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.