(CBS/AP) BURLESON, Texas - The National Weather Service says tornadoes have touched down in the Dallas-Fort Worth area, and there is at least one report of damage.
Weather service advisories issued Tuesday said storm spotters and radar revealed separate tornadoes south of Dallas and Fort Worth. The weather service says the tornado south of Fort Worth caused "considerable damage" near Cleburne.
Local television footage shows a large funnel cloud on the ground near Interstate 35 south of Dallas. The weather service says the "large and extremely dangerous" tornado was near Lancaster about 20 miles south of Dallas and moving north.
The weather service is also reporting other developing tornadoes as a band of severe storms moves through the area.
A tornado watch is in effect for most of the counties in north Texas.
Executive director of Johnson County Emergency Services, Mike Johnson, reported that he could see a funnel cloud close to the Joshua, Cleburne border, according to CBS affiliate KTVT Dallas.
""If anybody's driving they should probably not head into that storm," he said, "because I was coming back from one location and it [rain] was so heavy that cars were stopping on the side of the road because they couldn't even see from just shear, heavy rain."