Tornadoes wreck homes and ground flights in Texas

Tornadoes have touched down near Dallas, Texas, flipping trucks, uprooting trees, wrecking homes and grounding planes.

Dallas-Fort Worth Airport cancelled flights and moved passengers away from glass windows for their safety.

The tornado touched down at lunchtime just south of Dallas, and moved east as another appeared in Mansfield. There were no immediate reports of injuries.

US TV footage showed images of houses with roofs and second storeys missing.

Some of the properties were almost completely blown away.

"Obviously we're going to have a lot of assessments to make when this is done," Dallas County spokeswoman Maria Arita told the Associated Press.

'Extremely dangerous'
The National Weather Service reported at least two "large and extremely dangerous" tornadoes.

Its warning said that the area would remain on tornado watch until 20:00 local time (01:00 GMT) on Tuesday.

One of the tornados touched down in a parking lot full of articulated lorries, and a local television station captured the vehicles flying through the air.

Some of the cargo containers attached to the lorries were flattened.

Witnesses said the twisters formed quickly.

"All of a sudden, the rain and hail ceased," Jonathan Cook, a resident of a nearby town, told CNN. "That's when we saw the tornadoes touch down."

Damage was reported in nearby Kennedale, Arlington and Lancaster.

Kennedale city spokeswoman Amethyst Cirmo said that so far moderate damage had been reported on 40 to 50 homes as well as some businesses.

American Airlines cancelled hundreds of flights at Dallas-Fort Worth International, the eighth busiest airport in the world in terms of passengers.

More than 110 aircraft were damaged from hail.

Power cuts to tens of thousands of homes were reported in the area, and police have warned residents to stay away from dangling power lines.

- BBC