DALLAS (AP) -- Heavy rain in parts of Texas has led to flash flood watches for some of the state's largest metropolitan areas.

A flash flood watch is in effect for the Dallas-Fort Worth area through Wednesday afternoon. Oncor crews worked to restore power after more than 1,700 outages, mainly in the Dallas area.

In the midst of the rain, a flatbed truck crashed, catching fire on southbound Interstate 35 at eastbound Interstate 30 early Wednesday morning. About 130 feet of guardrail was damaged. Northbound I-30 traffic was stopped and diverted at Colorado Boulevard during morning rush hour.

The National Weather Service issued a flash flood watch for the Austin, San Antonio and Houston areas until Wednesday evening.

Heavy rain in parts of South Texas has led to the closure of about two dozen roads in San Antonio due to high water. Forecasters say San Antonio received nearly 3 inches of rain overnight. The Austin area recorded almost 2 inches of precipitation since Tuesday morning.

CPS Energy reported scattered electrical outages in San Antonio.

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