The 2009 season

Unnamed tropical depression (2009)

Unnamed tropical depression peaked at 30 kt in the Eastern Pacific between August 7, 2009 and August 15, 2009, with a lowest pressure of 1006 mb.

Track and intensity

The whole track of Unnamed tropical depression, 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
Eastern Pacific
Dates
August 7, 2009 to August 15, 2009
Peak strength
Tropical Depression, 30 kt (35 mph)
Lowest pressure
1006 mb (29.71 inHg)
Landfall
No; closest approach 1231 km (765 mi)
Accumulated cyclone energy
0.0
Eyewall radius at its peak
15 nmi (28 km, 17 mi)
Overall size
120 nmi (222 km, 138 mi) to the outermost closed isobar
Peak gust in the best track
40 kt (46 mph)
Fastest the center moved
12 kt (14 mph)
Identifier
EP092009

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Aug 7, 18:0012.3N 113.9W20 kt1011 mbDisturbance
Aug 8, 00:0012.8N 114.7W20 kt1011 mbDisturbance
Aug 8, 06:0013.2N 115.6W20 kt1011 mbDisturbance
Aug 8, 12:0013.5N 116.5W25 kt1010 mbDisturbance
Aug 8, 18:0013.8N 117.4W25 kt1010 mbDisturbance
Aug 9, 00:0014.1N 118.1W25 kt1010 mbLow
Aug 9, 06:0014.1N 118.7W25 kt1010 mbLow
Aug 9, 12:0014.2N 119.4W25 kt1008 mbLow
Aug 9, 18:0014.4N 120.2W30 kt1007 mbTropical depression
Aug 10, 00:0014.7N 121.1W30 kt1007 mbTropical depression
Aug 10, 06:0014.8N 121.9W30 kt1006 mbTropical depression
Aug 10, 12:0014.9N 122.7W30 kt1006 mbTropical depression
Aug 10, 18:0015.0N 123.7W30 kt1006 mbTropical depression
Aug 11, 00:0015.1N 124.9W30 kt1006 mbTropical depression
Aug 11, 06:0015.1N 126.0W30 kt1006 mbTropical depression
Aug 11, 12:0015.1N 127.1W30 kt1006 mbTropical depression
Aug 11, 18:0015.1N 128.3W30 kt1006 mbTropical depression
Aug 12, 00:0015.0N 129.4W30 kt1007 mbLow
Aug 12, 06:0014.8N 130.5W30 kt1007 mbLow
Aug 12, 12:0014.5N 131.6W30 kt1007 mbLow
Aug 12, 18:0014.2N 132.7W30 kt1007 mbLow
Aug 13, 00:0013.9N 133.7W25 kt1007 mbLow
Aug 13, 06:0013.4N 134.5W25 kt1007 mbLow
Aug 13, 12:0012.9N 135.2W25 kt1007 mbLow
Aug 13, 18:0012.3N 135.8W25 kt1008 mbLow
Aug 14, 00:0011.8N 136.6W25 kt1009 mbLow
Aug 14, 06:0011.5N 137.4W25 kt1009 mbLow
Aug 14, 12:0011.2N 138.1W25 kt1009 mbLow
Aug 14, 18:0011.0N 138.7W25 kt1009 mbLow
Aug 15, 00:0010.7N 139.3W25 kt1009 mbLow
Aug 15, 06:0010.9N 139.6W25 kt1009 mbLow

Other Eastern Pacific 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.