Tornadoes tear through Dallas-Forth Worth area

Truck trailers tossed by Texas tornado
STORY HIGHLIGHTS
NEW: Flights at Dallas Love Field and Dallas-Fort Worth airports are grounded
There are no immediate reports of injuries
The National Weather Service urges people to take immediate cover
Read more coverage from CNN affiliate WFAA. Are you there? Stay safe and send photos or video.
(CNN) -- Separate tornadoes touched down near the Dallas-Forth Worth area Tuesday afternoon, tossing tractor trailers like toys and causing widespread damage to homes and other structures.
One tornado was spotted on the ground five miles east of downtown Dallas, the National Weather Service said. All flights at Dallas-Fort Worth airport were grounded and passengers and airport employees were moved into shelters as the storm system spawned multiple funnel clouds. Flights at Dallas Love Field airport were also grounded.
A fresh tornado warning was issued for Arlington, Texas, which had already been struck.
"There may be storms behind the storms, making damage in places that already have damage and that now is happening for Arlington, Texas," said CNN's Chad Myers.
Video from CNN affiliate WFAA broadcast dramatic footage of the scene, showing tractor trailers being lifted and tossed through the air like matchsticks. Ominous clouds filled the skies, making it as dark as night. The network showed roofs of homes ripped off and trailers turned on their sides.
There were no immediate reports of injuries, but a spokeswoman for Dallas County said she had heard of damage throughout the area.
Tarrant County spokesman Mark Flake confirmed damage in the cities of Arlington and Kennedale.
The weather service urged people in the area to move to a bathroom, closet or hallway on the lowest floor of their buildings and take cover.