Flash flood watch for Houston and surrounding area until 7 a.m.

The National Weather Service has issued a significant weather advisory for the Houston area. Frequent lightning strikes are occurring with the thunderstor The National Weather Service has issued a significant weather advisory for the Houston area. Frequent lightning strikes are occurring with the thunderstor Photo: NWS Photo: NWS Image 1 of / 6 Caption Close Flash flood watch for Houston and surrounding area until 7 a.m. 1 / 6 Back to Gallery

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The National Weather Service has issued a flash flood watch for the Houston area until 7 a.m., predicting widespread rainfall of about 1-2 inches overnight and totals of up to 4 inches in some stretches along Interstate 10.

"In areas that have already gotten rain, obviously this is going to make it much more worse," said Kent Prochazka, a meteorologist with the weather service in Houston.

Some portions of Montgomery County and northern Harris County already had taken on several inches of water Sunday night, leading to a warning for potential creek and street flooding.

There also was a big storm complex with strong winds and hail near the College Station and Brenham areas that headed southeast, Prochazka said, toward Fort Bend and Waller counties. That was expected to pass through overnight.

There may be some showers and thunderstorms on Monday, Prochazka said, but they likely will be more scattered.