The 2009 season

Tropical Storm Dujuan (2009)

Tropical Storm Dujuan peaked at 50 kt in the Western Pacific between September 2, 2009 and September 11, 2009, with a lowest pressure of 980 mb.

Track and intensity

The whole track of Tropical Storm Dujuan, 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
Western Pacific
Dates
September 2, 2009 to September 11, 2009
Peak strength
Tropical Storm, 50 kt (58 mph)
Lowest pressure
980 mb (28.94 inHg)
Landfall
No; closest approach 414 km (257 mi)
Accumulated cyclone energy
4.0
Identifier
WP132009

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Sep 2, 18:0017.6N 130.1E996 mbTropical storm
Sep 3, 00:0017.8N 129.1E996 mbTropical storm
Sep 3, 06:0017.0N 128.3E20 kt1007 mbDisturbance
Sep 3, 12:0016.8N 128.5E20 kt1007 mbDisturbance
Sep 3, 18:0017.2N 128.8E30 kt994 mbTropical depression
Sep 4, 00:0017.7N 129.3E30 kt1000 mbTropical depression
Sep 4, 06:0018.5N 130.0E30 kt1000 mbTropical depression
Sep 4, 12:0019.0N 130.9E35 kt990 mbTropical storm
Sep 4, 18:0019.5N 132.0E35 kt992 mbTropical storm
Sep 5, 00:0020.4N 132.9E40 kt993 mbTropical storm
Sep 5, 06:0021.3N 133.9E45 kt989 mbTropical storm
Sep 5, 12:0022.3N 135.0E45 kt989 mbTropical storm
Sep 5, 18:0023.4N 135.5E45 kt989 mbTropical storm
Sep 6, 00:0024.4N 135.8E45 kt989 mbTropical storm
Sep 6, 06:0025.3N 135.8E45 kt989 mbTropical storm
Sep 6, 12:0026.1N 135.8E45 kt989 mbTropical storm
Sep 6, 18:0026.7N 135.9E40 kt993 mbTropical storm
Sep 7, 00:0027.3N 136.0E40 kt993 mbTropical storm
Sep 7, 06:0028.0N 136.2E40 kt993 mbTropical storm
Sep 7, 12:0028.6N 136.6E40 kt993 mbTropical storm
Sep 7, 18:0029.6N 137.4E40 kt993 mbTropical storm
Sep 8, 00:0030.4N 138.6E35 kt996 mbTropical storm
Sep 8, 06:0031.2N 140.4E35 kt996 mbTropical storm
Sep 8, 12:0031.8N 142.7E45 kt989 mbTropical storm
Sep 8, 18:0032.7N 145.7E50 kt985 mbTropical storm
Sep 9, 00:0033.6N 148.7E50 kt985 mbTropical storm
Sep 9, 06:0035.4N 152.4E50 kt985 mbTropical storm
Sep 9, 12:0037.2N 156.1E45 kt989 mbTropical storm
Sep 9, 18:0039.5N 159.4E40 kt993 mbTropical storm
Sep 10, 00:0042.9N 163.0E35 kt996 mbExtratropical
Sep 10, 06:0045.5N 167.4E980 mbExtratropical
Sep 10, 12:0047.8N 170.7E980 mbExtratropical
Sep 10, 18:0049.5N 174.5E984 mbExtratropical
Sep 11, 00:0051.2N 177.5E986 mbExtratropical
Sep 11, 06:0053.0N 180.0E990 mbExtratropical
Sep 11, 12:0054.4N 181.2EExtratropical

Other Western 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.