The 1993 season

Tropical Storm Irma (1993)

Tropical Storm Irma peaked at 55 kt in the Western Pacific between March 5, 1993 and March 19, 1993, with a lowest pressure of 985 mb.

Track and intensity

The whole track of Tropical Storm Irma, colored by strength, with the other storms of the 1993 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
March 5, 1993 to March 19, 1993
Peak strength
Tropical Storm, 55 kt (63 mph)
Lowest pressure
985 mb (29.09 inHg)
Landfall
No; closest approach 1378 km (856 mi)
Accumulated cyclone energy
4.8
Identifier
WP021993

Deaths and damage

No source this site reads publishes a machine-readable casualty or damage figure for a storm of this era. The National Hurricane Center’s season tables begin in 1995 and carry deaths and damage only from 2005 in the Atlantic and 2020 in both basins; the US Storm Events record begins in 1996.

Track

Time (UTC)PositionWindPressureStatus
Mar 5, 00:003.1N 173.7E15 ktNot reported
Mar 5, 06:003.2N 172.8E15 ktNot reported
Mar 5, 12:003.3N 171.9E15 ktNot reported
Mar 5, 18:003.4N 171.0E15 ktNot reported
Mar 6, 00:003.5N 170.2E15 ktNot reported
Mar 6, 06:003.6N 169.4E20 ktNot reported
Mar 6, 12:003.6N 168.8E20 ktNot reported
Mar 6, 18:003.7N 168.2E20 ktNot reported
Mar 7, 00:003.7N 167.6E20 ktNot reported
Mar 7, 06:003.7N 167.1E20 ktNot reported
Mar 7, 12:003.8N 166.7E20 ktNot reported
Mar 7, 18:003.9N 166.3E20 ktNot reported
Mar 8, 00:004.0N 166.0E25 ktNot reported
Mar 8, 06:004.2N 165.8E25 ktNot reported
Mar 8, 12:004.4N 165.5E25 ktNot reported
Mar 8, 18:004.6N 165.2E25 ktNot reported
Mar 9, 00:004.9N 164.9E25 ktTropical storm
Mar 9, 06:005.1N 164.7E25 ktTropical storm
Mar 9, 12:005.2N 164.4E25 kt1004 mbTropical storm
Mar 9, 18:005.3N 164.1E30 kt1004 mbTropical storm
Mar 10, 00:005.3N 163.9E30 kt1004 mbTropical storm
Mar 10, 06:005.3N 163.7E30 kt1002 mbTropical storm
Mar 10, 12:005.3N 163.5E30 kt1002 mbTropical storm
Mar 10, 18:005.2N 163.2E25 kt1002 mbTropical storm
Mar 11, 00:005.2N 163.0E25 kt1002 mbTropical storm
Mar 11, 06:005.1N 162.8E25 kt1000 mbTropical storm
Mar 11, 12:004.7N 162.4E25 kt1000 mbTropical storm
Mar 11, 18:004.1N 162.5E25 kt1000 mbTropical storm
Mar 12, 00:004.0N 163.0E25 kt1000 mbTropical storm
Mar 12, 06:004.4N 162.3E25 kt1000 mbTropical storm
Mar 12, 12:004.8N 161.7E30 kt1000 mbTropical storm
Mar 12, 18:005.2N 161.1E35 kt1000 mbTropical storm
Mar 13, 00:005.9N 160.2E40 kt1000 mbTropical storm
Mar 13, 06:007.4N 158.6E45 kt1000 mbTropical storm
Mar 13, 12:009.0N 157.0E50 kt996 mbTropical storm
Mar 13, 18:0010.3N 155.6E55 kt992 mbTropical storm
Mar 14, 00:0011.3N 154.4E55 kt990 mbTropical storm
Mar 14, 06:0011.9N 153.2E55 kt990 mbTropical storm
Mar 14, 12:0012.2N 152.2E55 kt990 mbTropical storm
Mar 14, 18:0012.5N 151.2E55 kt990 mbTropical storm
Mar 15, 00:0012.9N 150.3E50 kt990 mbTropical storm
Mar 15, 06:0013.5N 149.7E50 kt990 mbTropical storm
Mar 15, 12:0014.3N 149.5E55 kt990 mbTropical storm
Mar 15, 18:0015.1N 149.6E55 kt985 mbTropical storm
Mar 16, 00:0015.8N 149.8E55 kt985 mbTropical storm
Mar 16, 06:0016.5N 150.2E55 kt985 mbTropical storm
Mar 16, 12:0017.0N 150.6E50 kt985 mbTropical storm
Mar 16, 18:0017.3N 151.0E45 kt990 mbTropical storm
Mar 17, 00:0017.5N 151.4E40 kt994 mbTropical storm
Mar 17, 06:0017.7N 151.8E35 kt998 mbTropical storm
Mar 17, 12:0017.8N 152.0E35 kt1000 mbTropical storm
Mar 17, 18:0017.9N 152.2E30 kt1004 mbTropical storm
Mar 18, 00:0018.1N 152.4E30 kt1008 mbTropical storm
Mar 18, 06:0018.2N 152.6E25 kt1008 mbTropical storm
Mar 18, 12:0018.6N 152.4E1010 mbTropical storm
Mar 18, 18:0019.0N 152.7E1010 mbTropical storm
Mar 19, 00:0019.4N 153.0E1012 mbTropical storm

Other Western Pacific storms of 1993

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.