The 2013 season

Tropical Storm Alvin (2013)

Tropical Storm Alvin peaked at 50 kt in the Eastern Pacific between May 13, 2013 and May 17, 2013, with a lowest pressure of 1000 mb.

Track and intensity

The whole track of Tropical Storm Alvin, 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.

Open the live map with storms, cones and warnings

The storm

Basin
Eastern Pacific
Dates
May 13, 2013 to May 17, 2013
Peak strength
Tropical Storm, 50 kt (58 mph)
Lowest pressure
1000 mb (29.53 inHg)
Landfall
No; closest approach 846 km (526 mi)
Accumulated cyclone energy
1.0
Tropical-storm-force wind reached
50 nmi (93 km, 58 mi) from the center at its widest
Eyewall radius at its peak
15 nmi (28 km, 17 mi)
Overall size
250 nmi (463 km, 288 mi) to the outermost closed isobar
Peak gust in the best track
55 kt (63 mph)
Fastest the center moved
14 kt (16 mph)
Identifier
EP012013

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
May 13, 12:006.7N 95.2W20 kt1009 mbLow
May 13, 18:006.9N 95.9W20 kt1008 mbLow
May 14, 00:007.0N 96.8W25 kt1007 mbLow
May 14, 06:007.1N 97.7W25 kt1007 mbLow
May 14, 12:007.2N 98.7W25 kt1007 mbLow
May 14, 18:007.4N 99.8W25 kt1007 mbLow
May 15, 00:007.6N 101.0W25 kt1006 mbLow
May 15, 06:007.8N 102.3W30 kt1006 mbTropical depression
May 15, 12:008.1N 103.6W30 kt1006 mbTropical depression
May 15, 18:008.4N 104.6W35 kt1005 mbTropical storm
May 16, 00:008.6N 105.5W40 kt1004 mbTropical storm
May 16, 06:008.9N 106.4W50 kt1000 mbTropical storm
May 16, 12:009.1N 107.4W45 kt1002 mbTropical storm
May 16, 18:009.3N 108.8W40 kt1003 mbTropical storm
May 17, 00:009.6N 110.1W35 kt1004 mbTropical storm

Other Eastern Pacific 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.