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Tropical Storm Allison (2001)

Tropical Storm Allison was a tropical storm at its peak, with 58 mph winds and a lowest pressure of 1000 mb, per NOAA's National Hurricane Center. Modeled winds reached tropical-storm force (39 mph) at 2 of the cities we track; the strongest was League City, TX, with a modeled peak gust of 48 mph.

Peak strength58 mph winds (1-minute)
Tropical storm
Cities with tropical-storm-force windsModeled, of the cities we track
2
LandfallsFirst June 5, 2001
2
Lowest pressure
1000 mb

Track, wind field and cities

Select a piece of the track or a city for details.

  • Depression or weaker
  • Tropical storm
  • Hurricane, Category 1 or 2
  • Major hurricane, Category 3 to 5
  • Landfall
  • City (larger ring, stronger modeled gust)
  • Modeled wind field, 39 to 111 mph sustained (darker, stronger; orange 111 mph+)
Source: NOAA/NWS National Hurricane Center best track (HURDAT2). City winds and the wind field are modeled.

The shaded areas are where our model puts Tropical Storm Allison’s sustained winds over open land at 39 mph or more (tropical-storm force), 58, 74 (hurricane force) and 111 mph (major hurricane force) at some point along its track. Modeled, not measured. How we model hurricane winds

Landfalls

  1. June 5, 2001, tropical storm at 52 mph, about 42 miles from League City, TX
  2. June 11, 2001, subtropical depression at 35 mph, 29.6°N, 91.6°W

Modeled winds at cities (2)

Estimated peak winds for open, flat ground at each city’s center. Not measurements. How we model hurricane winds

CityPeak gustSustainedClosest passPeak
League City, TX48 mph39 mph10 milesJun 5, 2001, 5:30 PM CDT
Pasadena, TX48 mph39 mph6 milesJun 5, 2001, 6:30 PM CDT

Best track (57 positions)

TimeStatusWindPressurePosition
Jun 5, 12:00 UTCTropical storm46 mph1007 mb27.5°N, 95.0°W
Jun 5, 18:00 UTCTropical storm58 mph1002 mb28.5°N, 95.3°W
Jun 5, 21:00 UTC (landfall)Tropical storm52 mph1003 mb28.9°N, 95.3°W
Jun 6, 00:00 UTCTropical storm52 mph1003 mb29.3°N, 95.3°W
Jun 6, 06:00 UTCTropical depression35 mph1006 mb30.1°N, 95.2°W
Jun 6, 12:00 UTCTropical depression23 mph1005 mb31.0°N, 95.2°W
Jun 6, 18:00 UTCTropical depression23 mph1005 mb31.5°N, 95.0°W
Jun 7, 00:00 UTCTropical depression23 mph1005 mb31.6°N, 95.0°W
Jun 7, 06:00 UTCTropical depression23 mph1006 mb31.8°N, 94.9°W
Jun 7, 12:00 UTCTropical depression23 mph1006 mb31.4°N, 94.9°W
Jun 7, 18:00 UTCTropical depression17 mph1007 mb31.1°N, 95.0°W
Jun 8, 00:00 UTCTropical depression17 mph1002 mb30.9°N, 95.6°W
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