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Flash Flooding Hampers Coastal Texas; More Heavy Rain Possible This Week

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After a mostly dry summer, coastal Texas has received beneficial rainfall over the last few days, but in some cases, it’s been far too much of a good thing.

A day after flash floods made Monday’s evening commute a disaster in Brownsville, Texas, further north in Galveston, Texas saw significant flash flooding on Tuesday morning as a result of another highly-localized downpour. Stalled vehicles and widespread flooding were reported on Galveston Island, where 2.67″ of rain was recorded at Galveston’s airport on Tuesday morning, including 2.58″ between 10am and noon CDT.

This comes on the heels of major flooding in the Brownsville area, about 350 miles south, on Monday, when stalled vehicles and numerous water rescues were reported. Nearly six inches of rainfall was measured in just three hours in parts of the city, and a rare tornado warning was issued for the area as well, although no tornadoes were reported with the storm.

An upper level trough of low pressure has been responsible for pumping in plenty of tropical moisture from the Gulf of Mexico into coastal Texas. With the stagnant trough and a large area of high pressure centered over the heart of the Gulf of Mexico, however, it does appear the chance for more significant rainfall is in place across coastal Texas over the next few days. Flash flooding along the lines of this week’s events in Brownsville and Galveston are difficult to predict due to the highly localized nature of the rainfall, however, coastal Texas should be prepared for the possibility of more significant rainfall over a short amount of time.

Stay with WeatherNation for the latest on all the rain across Texas and throughout the Gulf.

For WeatherNation: Meteorologist Chris Bianchi

Stunning Images from the ground in Galveston, Texas

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Street flooding reported in Galveston this afternoon. Kelli Zapalac sent us this video from 43rd Street. Radar indicates 2-3" of rain has fallen on the island so far today. As these storms push northward some additional street flooding could occur in other neighborhoods this afternoon. Check MegaDoppler Radar: www.abc13.com/weather

Posted by Tim Heller on Tuesday, September 1, 2015

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