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April Floods Return For a Third Time

by Mario Gomez

Posted on April 28, 2009 at 12:52 PM

Updated Tuesday, Oct 27 at 11:12 AM

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Houstonians woke up Tuesday to yet another soggy commute to work and schools. The
photo of the flooded parking lot was taken by one of our viewers near I-10 and Eldridge.
This is the third time in the last 12 days that parts of Houston have experienced flooding
downpours. The Southside of the city has been hit hard the first couple of times.
This time the West-North-West parts of town saw the worst flooding. The Southside continues to add to its April record setting total with Hobby
airport reporting a total of 15.57" of rain.
The previous record was 10.49" set in 1973. This new record may be harder to break especially if we get any more rain before the end of April
Many schools sessions both private and public particularly on the West and Northwest side of the city where either canceled or delayed. The rainfall was concentrated in the Bear Creek flood plain which tends to act like a large retention pond. The Army Corps
of Engineers say that addicks reservoir will continue to rise and will impact sections of Highway 6 and Eldridge Parkway. Parts of Highway 6 may become impassable during the
afternoon of April 28th.
Anywhere from 8" - 12" of rain fell in this area and ran into adjacent
creeks like Lanham creek and Horsepense gully. These creeks and gullies all run into Buffalo Bayou which also received heavy rain.
The rain was caused first by an incredible amount of moisture available from a
large body of water, the Gulf of Mexico. Second a small upper level disturbance
along with an outflow boundary helped to cluster or concentrate large amounts
of rainfall over the Buffalo Bayou and Bear creek watersheds. The outflow boundary
acts like a miny cold front that lifts the available moisture high enough to eventually
precipitate. This combination lead to some incredible localized rainfall totals with
creeks that will be a near or above flood stage for the next couple of days.