Tropical Storm Grace (2009)

Tropical Storm Grace peaked at 55 kt in the North Atlantic between September 27, 2009 and October 6, 2009, with a lowest pressure of 986 mb.

Track and intensity

The whole track of Tropical Storm Grace, colored by strength, with the other storms of the 2009 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: North Atlantic
Dates: September 27, 2009 to October 6, 2009
Peak strength: Tropical Storm, 55 kt (63 mph)
Lowest pressure: 986 mb (29.12 inHg)
Landfall: No; closest approach 98 km (61 mi)
Accumulated cyclone energy: 2.0
Tropical-storm-force wind reached: 285 nmi (528 km, 328 mi) from the center at its widest
Overall size: 350 nmi (648 km, 403 mi) to the outermost closed isobar
Peak gust in the best track: 65 kt (75 mph)
Fastest the center moved: 27 kt (31 mph)
Identifier: AL092009

Deaths and damage

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

Track

Time (UTC)	Position	Wind	Pressure	Status
Sep 27, 18:00	46.0N 43.2W	55 kt	995 mb	Extratropical
Sep 28, 00:00	45.3N 42.9W	50 kt	994 mb	Extratropical
Sep 28, 06:00	44.7N 42.0W	45 kt	992 mb	Extratropical
Sep 28, 12:00	44.0N 40.3W	45 kt	992 mb	Extratropical
Sep 28, 18:00	43.8N 38.7W	40 kt	994 mb	Extratropical
Sep 29, 00:00	43.6N 37.1W	40 kt	996 mb	Extratropical
Sep 29, 06:00	43.4N 35.8W	35 kt	998 mb	Extratropical
Sep 29, 12:00	42.9N 35.3W	35 kt	1000 mb	Extratropical
Sep 29, 18:00	42.3N 35.2W	35 kt	999 mb	Extratropical
Sep 30, 00:00	41.4N 35.4W	35 kt	998 mb	Extratropical
Sep 30, 06:00	40.3N 35.3W	35 kt	997 mb	Extratropical
Sep 30, 12:00	38.7N 34.6W	40 kt	996 mb	Extratropical
Sep 30, 18:00	37.4N 33.2W	40 kt	995 mb	Extratropical
Oct 1, 00:00	36.6N 31.5W	40 kt	995 mb	Extratropical
Oct 1, 06:00	36.7N 29.7W	40 kt	995 mb	Extratropical
Oct 1, 12:00	37.7N 28.7W	40 kt	996 mb	Extratropical
Oct 1, 18:00	38.6N 28.5W	40 kt	996 mb	Extratropical
Oct 2, 00:00	39.3N 28.8W	35 kt	997 mb	Extratropical
Oct 2, 06:00	39.7N 29.4W	35 kt	997 mb	Extratropical
Oct 2, 12:00	40.2N 30.0W	35 kt	997 mb	Extratropical
Oct 2, 18:00	40.9N 30.4W	40 kt	996 mb	Extratropical
Oct 3, 00:00	41.4N 31.0W	40 kt	996 mb	Extratropical
Oct 3, 06:00	41.4N 31.9W	35 kt	996 mb	Extratropical
Oct 3, 12:00	40.8N 32.5W	35 kt	996 mb	Extratropical
Oct 3, 18:00	39.9N 32.3W	40 kt	995 mb	Low
Oct 4, 00:00	39.1N 31.3W	40 kt	994 mb	Low
Oct 4, 06:00	38.5N 29.5W	40 kt	993 mb	Tropical storm
Oct 4, 12:00	38.3N 26.8W	45 kt	992 mb	Tropical storm
Oct 4, 18:00	38.8N 23.9W	50 kt	991 mb	Tropical storm
Oct 5, 00:00	40.2N 21.3W	55 kt	989 mb	Tropical storm
Oct 5, 06:00	42.0N 19.0W	55 kt	988 mb	Tropical storm
Oct 5, 12:00	44.3N 17.1W	55 kt	987 mb	Tropical storm
Oct 5, 18:00	46.6N 15.5W	50 kt	986 mb	Tropical storm
Oct 6, 00:00	48.8N 14.3W	45 kt	986 mb	Tropical storm
Oct 6, 06:00	50.0N 12.7W	40 kt	989 mb	Extratropical
Oct 6, 12:00	50.4N 10.6W	35 kt	993 mb	Extratropical
Oct 6, 18:00	50.8N 7.7W	30 kt	997 mb	Extratropical

Other North Atlantic storms of 2009

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.