The 2013 season

Unnamed tropical storm (2013)

Unnamed tropical storm peaked at 55 kt in the North Atlantic between December 3, 2013 and December 7, 2013, with a lowest pressure of 995 mb.

Track and intensity

The whole track of Unnamed tropical storm, colored by strength, with the other storms of the 2013 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
December 3, 2013 to December 7, 2013
Peak strength
Tropical Storm, 55 kt (63 mph)
Lowest pressure
995 mb (29.38 inHg)
Landfall
No; closest approach 1121 km (697 mi)
Accumulated cyclone energy
0.0
Tropical-storm-force wind reached
300 nmi (556 km, 345 mi) from the center at its widest
Eyewall radius at its peak
90 nmi (167 km, 104 mi)
Overall size
400 nmi (741 km, 460 mi) to the outermost closed isobar
Fastest the center moved
12 kt (14 mph)
Identifier
AL152013

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Dec 3, 18:0034.3N 27.7W50 kt1002 mbExtratropical
Dec 4, 00:0033.9N 27.8W55 kt1000 mbExtratropical
Dec 4, 06:0033.1N 28.9W55 kt997 mbExtratropical
Dec 4, 12:0032.2N 28.5W50 kt995 mbExtratropical
Dec 4, 18:0031.9N 27.9W50 kt995 mbExtratropical
Dec 5, 00:0032.4N 27.5W45 kt997 mbSubtropical storm
Dec 5, 06:0033.0N 27.4W45 kt998 mbSubtropical storm
Dec 5, 12:0033.5N 27.7W45 kt998 mbSubtropical storm
Dec 5, 18:0033.7N 27.8W40 kt999 mbSubtropical storm
Dec 6, 00:0033.9N 27.9W40 kt999 mbSubtropical storm
Dec 6, 06:0033.9N 27.1W40 kt999 mbSubtropical storm
Dec 6, 12:0034.5N 26.9W40 kt999 mbSubtropical storm
Dec 6, 18:0035.1N 27.0W40 kt999 mbSubtropical storm
Dec 7, 00:0035.8N 27.1W35 kt1000 mbSubtropical storm
Dec 7, 06:0036.5N 27.4W35 kt1001 mbLow
Dec 7, 12:0037.1N 27.8W30 kt1003 mbLow

Other North Atlantic storms of 2013

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.