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HOUSTON - The National Weather Service has issued a tornado watch for several counties north of the Houston-metro area.
The following counties are included in the watch: Grimes, Montgomery, Polk, San Jacinto, and Washington County.
The watch is in effect until midnight Thursday morning.
A tornado watch means conditions are favorable for possible tornado development.
To stay up-to-date with the latest weather updates, download the free FOX 26 Houston Weather App for your iPhone or Android device.