Two 'extremely dangerous' tornadoes reported in Dallas area

The National Weather Service reported at least two separate 'large and extremely dangerous' tornadoes south of Dallas and Fort Worth. 

Several reported tornadoes tore through the Dallas area on Tuesday, tossing semis in the air and leaving crumpled tractor trailers strewn along highways and in truck stop parking lots.

The National Weather Service reported at least two separate "large and extremely dangerous" tornadoes south of Dallas and Fort Worth. Dallas Police spokeswoman Sherri Jeffrey said an apparent twister touched down and caused damage within the city's southern limits.

Officials had no immediate information about injuries.

Local television footage showed a large, dark funnel cloud moving on the ground not far from a major interstate early Tuesday afternoon. Crumpled orange tractor trailers were later visible in a Dallas County parking lot, as well as flattened trailers along the sides of highways and access roads.

The weather service said "considerable damage" also was reported near Cleburne, south of Fort Worth, and Lancaster, south of Dallas.