Houston under flood watch as torrential rain continues in southeast Texas

A slow-moving system has triggered a flood alert in Harris County and the surrounding area.

Photo of Dan Carson
A floor watch is underway for Harris County and the surrounding region until 12 p.m. CT Saturday.

A floor watch is underway for Harris County and the surrounding region until 12 p.m. CT Saturday.

D. Allan Akins / EyeEm/Getty Images/EyeEm

The National Weather Service has issued a flood watch for portions of south-central and southeast Texas, including Galveston and inland Harris County. Circulated at 4:21 a.m. CT on Friday morning, the flood watch will run through 12 p.m. Saturday as a system bringing sustained heavy rain capable of dumping up to two inches of precipitation per hour crosses southeast Texas.

"Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations," the NWS warned in its notice. "Flooding may occur in poor drainage and urban areas."

Rainfall could accelerate to four inches per hour in areas that already received significant rain on Thursday. Southeastern Harris County and Brazoria County are two areas identified in the NWS alert as particularly vulnerable to flooding on Friday and Saturday. Slow-moving rain is expected to creep through the region on Friday evening and overnight Saturday.

Friday's rain follows a waterlogged Thanksgiving in Houston. A historic downpour of 1.53 inches was recorded Thursday by sensors at William P. Hobby Airport, according to Space City Weather's Matt Lanza. That figure shatters the previous Thanksgiving Day record of .59 inches set in 2021, and sets the stage for another damp 24 hours here in southeast Texas. Street flooding appears to be the primary concern for Houstonians in this window, and thankfully temperatures have warmed to a more seasonable range in the 60s since last weekend's miserably chilly stretch of days. 

Stormy conditions should wash out Sunday as sunny weather and temperatures in the 70s return to the Houston area. In the meantime, if you're going out today, wear some shoes you can afford to soak and remember, as always: If you're driving toward an underpass with standing water, turn the heck around.

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