The 2011 season

Tropical Storm Haitang (2011)

Tropical Storm Haitang peaked at 35 kt in the Western Pacific between September 23, 2011 and September 27, 2011, with a lowest pressure of 996 mb, and made landfall.

Radar

Reflectivity now over Tropical Storm Haitang. Open it to see storms, cones and warnings on the map.

Open the live radar with storms, cones and warnings

Radar mosaic and map layers from NOAA MRMS. Boundaries from the Iowa Environmental Mesonet.

The storm

Basin
Western Pacific
Dates
September 23, 2011 to September 27, 2011
Peak strength
Tropical Storm, 35 kt (40 mph)
Lowest pressure
996 mb (29.41 inHg)
Landfall
Yes
Accumulated cyclone energy
0.4
Identifier
WP212011

Deaths and damage

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

Track

Time (UTC)PositionWindPressureStatus
Sep 23, 18:0016.2N 110.6ETropical storm
Sep 24, 00:0015.6N 111.0E15 kt1010 mbDisturbance
Sep 24, 06:0015.1N 111.3E25 kt1004 mbTropical depression
Sep 24, 12:0015.2N 112.1E25 kt1004 mbTropical depression
Sep 24, 18:0015.6N 112.9E25 kt1004 mbTropical depression
Sep 25, 00:0016.6N 113.0E25 kt1004 mbTropical depression
Sep 25, 06:0017.2N 112.5E35 kt996 mbTropical storm
Sep 25, 12:0016.9N 112.1E35 kt996 mbTropical storm
Sep 25, 18:0016.8N 111.7E35 kt996 mbTropical storm
Sep 26, 00:0016.7N 111.3E30 kt1000 mbTropical depression
Sep 26, 06:0016.6N 110.8E30 kt1000 mbTropical depression
Sep 26, 12:0016.3N 109.9E30 kt1000 mbTropical depression
Sep 26, 18:0016.4N 108.9E25 kt1004 mbTropical depression
Sep 27, 00:0016.7N 108.0E20 kt1007 mbDisturbance
Sep 27, 06:0016.5N 106.4E20 kt1007 mbDisturbance

Other Western Pacific storms of 2011

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.