Hurricane Cosme (1989)

Hurricane Cosme reached Category 1 in the Eastern Pacific between June 18, 1989 and June 23, 1989, with a lowest pressure of 979 mb, and made landfall.

Track and intensity

The whole track of Hurricane Cosme, colored by strength, with the other storms of the 1989 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: Eastern Pacific
Dates: June 18, 1989 to June 23, 1989
Peak strength: Category 1, 75 kt (86 mph)
Lowest pressure: 979 mb (28.91 inHg)
Landfall: Yes
Accumulated cyclone energy: 3.6
Fastest the center moved: 22 kt (25 mph)
Identifier: EP031989

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.

Landfall

Time (UTC)	Where	Position	Wind	Pressure
Jun 22, 04:00	Ayutla de los Libres, Guerrero, Mexico, 21 km away	16.8N 99.0W	70 kt (81 mph)	980 mb

Landfall points the US agencies flagged in the best track. The nearest town is named from the site’s gazetteer, not from the report.

Track

Time (UTC)	Position	Wind	Pressure	Status
Jun 18, 00:00	13.2N 94.9W	25 kt		Tropical depression
Jun 18, 06:00	13.4N 95.1W	30 kt		Tropical depression
Jun 18, 12:00	13.6N 96.1W	30 kt		Tropical depression
Jun 18, 18:00	13.5N 97.4W	30 kt	1009 mb	Tropical depression
Jun 19, 00:00	13.2N 98.7W	30 kt	1009 mb	Tropical depression
Jun 19, 06:00	13.0N 99.6W	30 kt	1009 mb	Tropical depression
Jun 19, 12:00	13.0N 99.8W	30 kt	1008 mb	Tropical depression
Jun 19, 18:00	12.9N 99.7W	30 kt	1005 mb	Tropical depression
Jun 20, 00:00	13.0N 99.1W	35 kt	998 mb	Tropical storm
Jun 20, 06:00	13.1N 99.8W	40 kt	995 mb	Tropical storm
Jun 20, 12:00	13.1N 100.1W	45 kt	994 mb	Tropical storm
Jun 20, 18:00	13.1N 100.2W	55 kt	992 mb	Tropical storm
Jun 21, 00:00	13.0N 100.1W	55 kt	990 mb	Tropical storm
Jun 21, 06:00	13.2N 99.9W	60 kt	987 mb	Tropical storm
Jun 21, 12:00	13.3N 99.7W	65 kt	982 mb	Hurricane
Jun 21, 18:00	14.5N 99.5W	70 kt	980 mb	Hurricane
Jun 22, 00:00	15.6N 99.3W	75 kt	979 mb	Hurricane
Jun 22, 04:00 landfall	16.8N 99.0W	70 kt	980 mb	Hurricane
Jun 22, 06:00	16.9N 98.9W	65 kt	985 mb	Hurricane
Jun 22, 12:00	18.6N 98.9W	40 kt	1000 mb	Tropical storm
Jun 22, 18:00	20.7N 98.8W	35 kt	1005 mb	Tropical storm
Jun 23, 00:00	22.9N 98.7W	30 kt	1008 mb	Tropical depression
Jun 23, 06:00	24.7N 98.6W	25 kt	1008 mb	Tropical depression
Jun 23, 12:00	25.9N 98.0W	20 kt	1008 mb	Tropical depression

Other Eastern Pacific storms of 1989

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.

The National Hurricane Center has published no tropical cyclone report for this storm.

Wikipedia article: Hurricane Cosme