The 2003 season

Tropical Storm Guillermo (2003)

Tropical Storm Guillermo peaked at 50 kt in the Eastern Pacific between August 7, 2003 and August 13, 2003, with a lowest pressure of 997 mb.

Track and intensity

The whole track of Tropical Storm Guillermo, colored by strength, with the other storms of the 2003 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
August 7, 2003 to August 13, 2003
Peak strength
Tropical Storm, 50 kt (58 mph)
Lowest pressure
997 mb (29.44 inHg)
Landfall
No; closest approach 971 km (603 mi)
Accumulated cyclone energy
2.7
Tropical-storm-force wind reached
60 nmi (111 km, 69 mi) from the center at its widest
Eyewall radius at its peak
20 nmi (37 km, 23 mi)
Overall size
180 nmi (333 km, 207 mi) to the outermost closed isobar
Fastest the center moved
17 kt (20 mph)
Identifier
EP072003

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Aug 7, 06:0016.0N 115.7W25 kt1009 mbTropical depression
Aug 7, 12:0016.3N 116.1W25 kt1009 mbTropical depression
Aug 7, 18:0016.5N 116.6W30 kt1007 mbTropical depression
Aug 8, 00:0016.6N 117.2W40 kt1003 mbTropical storm
Aug 8, 06:0016.6N 117.8W40 kt1002 mbTropical storm
Aug 8, 12:0016.5N 118.5W45 kt1000 mbTropical storm
Aug 8, 18:0016.1N 119.2W50 kt997 mbTropical storm
Aug 9, 00:0015.9N 120.0W50 kt997 mbTropical storm
Aug 9, 06:0015.8N 121.0W50 kt997 mbTropical storm
Aug 9, 12:0015.7N 122.2W50 kt998 mbTropical storm
Aug 9, 18:0015.5N 123.4W45 kt999 mbTropical storm
Aug 10, 00:0015.4N 124.6W45 kt1000 mbTropical storm
Aug 10, 06:0015.4N 125.8W45 kt1000 mbTropical storm
Aug 10, 12:0015.5N 126.9W40 kt1002 mbTropical storm
Aug 10, 18:0015.5N 128.0W35 kt1004 mbTropical storm
Aug 11, 00:0015.6N 129.3W35 kt1005 mbTropical storm
Aug 11, 06:0015.7N 130.6W35 kt1005 mbTropical storm
Aug 11, 12:0015.9N 132.0W30 kt1006 mbTropical depression
Aug 11, 18:0016.2N 133.5W30 kt1007 mbTropical depression
Aug 12, 00:0016.3N 135.0W30 kt1007 mbTropical depression
Aug 12, 06:0016.3N 136.5W30 kt1007 mbTropical depression
Aug 12, 12:0016.3N 138.2W30 kt1007 mbTropical depression
Aug 12, 18:0016.3N 139.8W25 kt1008 mbLow
Aug 13, 00:0016.1N 141.5W25 kt1009 mbLow

Other Eastern Pacific storms of 2003

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.