The 1991 season

Tropical Storm Luke (1991)

Tropical Storm Luke peaked at 55 kt in the Western Pacific between September 13, 1991 and September 21, 1991, with a lowest pressure of 972 mb.

Track and intensity

The whole track of Tropical Storm Luke, colored by strength, with the other storms of the 1991 season in the same basin behind it, and its wind and pressure hour by hour. Every fix is in the track table below.

Open the live map with storms, cones and warnings

The storm

Basin
Western Pacific
Dates
September 13, 1991 to September 21, 1991
Peak strength
Tropical Storm, 55 kt (63 mph)
Lowest pressure
972 mb (28.70 inHg)
Landfall
No; closest approach 46 km (29 mi)
Accumulated cyclone energy
4.0
Fastest the center moved
47 kt (54 mph)
Identifier
WP201991

Radar at PGUA as it neared land, Sep 13, 18:00 UTC

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
Sep 13, 06:0014.4N 147.8E20 ktNot reported
Sep 13, 12:0014.9N 146.7E25 ktNot reported
Sep 13, 18:0015.3N 145.4E25 ktNot reported
Sep 14, 00:0015.7N 144.1E25 kt1006 mbTropical storm
Sep 14, 06:0016.1N 142.9E25 kt1004 mbTropical storm
Sep 14, 12:0016.4N 141.8E25 kt1004 mbTropical storm
Sep 14, 18:0016.8N 140.7E30 kt1004 mbTropical storm
Sep 15, 00:0017.2N 139.5E30 kt1002 mbTropical storm
Sep 15, 06:0017.7N 138.4E35 kt1000 mbTropical storm
Sep 15, 12:0018.2N 137.2E35 kt998 mbTropical storm
Sep 15, 18:0018.8N 136.1E40 kt998 mbTropical storm
Sep 16, 00:0019.5N 134.9E40 kt996 mbTropical storm
Sep 16, 06:0020.4N 133.8E45 kt994 mbTropical storm
Sep 16, 12:0021.3N 132.5E45 kt994 mbTropical storm
Sep 16, 18:0022.4N 131.7E45 kt990 mbTropical storm
Sep 17, 00:0023.3N 131.3E45 kt990 mbTropical storm
Sep 17, 06:0024.0N 131.2E50 kt990 mbTropical storm
Sep 17, 12:0024.6N 131.0E50 kt990 mbTropical storm
Sep 17, 18:0025.3N 130.8E50 kt985 mbTropical storm
Sep 18, 00:0026.0N 130.6E50 kt980 mbTropical storm
Sep 18, 06:0026.9N 130.7E50 kt980 mbTropical storm
Sep 18, 12:0027.3N 132.1E50 kt980 mbTropical storm
Sep 18, 18:0027.6N 134.1E45 kt980 mbTropical storm
Sep 19, 00:0028.5N 137.0E45 kt980 mbTropical storm
Sep 19, 06:0031.6N 139.0E45 kt980 mbTropical storm
Sep 19, 12:0035.3N 141.6E45 kt980 mbTropical storm
Sep 19, 18:0038.5N 144.6E55 kt985 mbMixed
Sep 20, 00:0041.0N 149.0E990 mbExtratropical
Sep 20, 06:0042.0N 154.0E990 mbExtratropical
Sep 20, 12:0042.0N 160.0E990 mbExtratropical
Sep 20, 18:0043.0N 165.0E992 mbExtratropical
Sep 21, 00:0044.0N 169.0E988 mbExtratropical
Sep 21, 06:0046.0N 175.0E976 mbExtratropical
Sep 21, 12:0047.0N 180.0E972 mbExtratropical
Sep 21, 18:0047.0N 185.0EExtratropical

Other Western Pacific storms of 1991

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.