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Allison at peak intensity

Tropical Storm Allison was a tropical storm that devastated southeast Texas in June of the 2001 Atlantic hurricane season. The first storm of the season, Allison had an unusually long path for a June storm, which extended from Texas to the Mid-Atlantic states. Allison was also the first storm since Tropical Storm Frances in 1998 to strike the upper Texas coastline.

The storm dropped heavy rainfall along its path, peaking at over 40 inches (1000 mm) in Texas. The worst of the flooding occurred in Houston, where nearly $5 billion (2001 USD) in damage occurred. There, 30,000 became homeless after the flooding destroyed 2,744 homes. 23 people died in Texas.

Throughout its entire path, Allison caused $5.5 billion (2001 USD) in damage and 41 deaths. Aside from Texas, the places worst hit were Louisiana and southeastern Pennsylvania. Allison is the only tropical storm to have its name retired without ever reaching hurricane strength.

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