<P> Combined with waves on top , areas of Galveston Island experienced a wall of water 8 feet ( 2.5 m ) in height , creating overwash along the coastline . The storm caused winds of up to 43 mph ( 69 km / h ) at the Galveston Pier . While Allison was stalling over Texas , it dropped very heavy rainfall across the state . Minimal beach erosion was reported . Flash flooding continued for days , with rainfall amounts across the state peaking at just over 40 inches ( 1,033 mm ) in northwestern Jefferson County . In the Port of Houston , a total of 36.99 inches ( 940 mm ) was reported . Houston experienced torrential rainfall in a short amount of time . The six - day rainfall in Houston amounted to 38.6 inches ( 980 mm ) . Houston Hobby Airport received 20.84 inches of rain from June 5 to 10 , 2001 , while Bush Intercontinental Airport received 16.48 inches . The deluge of rainfall flooded 95,000 automobiles and 73,000 houses throughout Harris County . Tropical Storm Allison destroyed 2,744 homes , leaving 30,000 homeless with residential damages totaling to $1.76 billion ( 2001 USD , $2.29 billion 2012 USD ) . </P>
<P> Combined with waves on top , areas of Galveston Island experienced a wall of water 8 feet ( 2.5 m ) in height , creating overwash along the coastline . The storm caused winds of up to 43 mph ( 69 km / h ) at the Galveston Pier . While Allison was stalling over Texas , it dropped very heavy rainfall across the state . Minimal beach erosion was reported . Flash flooding continued for days , with rainfall amounts across the state peaking at just over 40 inches ( 1,033 mm ) in northwestern Jefferson County . In the Port of Houston , a total of 36.99 inches ( 940 mm ) was reported . Houston experienced torrential rainfall in a short amount of time . The six - day rainfall in Houston amounted to 38.6 inches ( 980 mm ) . Houston Hobby Airport received 20.84 inches of rain from June 5 to 10 , 2001 , while Bush Intercontinental Airport received 16.48 inches . The deluge of rainfall flooded 95,000 automobiles and 73,000 houses throughout Harris County . Tropical Storm Allison destroyed 2,744 homes , leaving 30,000 homeless with residential damages totaling to $1.76 billion ( 2001 USD , $2.29 billion 2012 USD ) . </P>
how many inches of rain did hurricane allison bring to houston
how many inches of rain did hurricane allison bring to houston
38.6 inches
38.6 inches