US Tornadoes

A trailer is over turned on I 20 near Bonny view in southern Dallas on Tuesday, April 3, 2012. Tornadoes tore through the Dallas area on Tuesday, tearing roofs off homes, tossing trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. The National Weather Service confirmed at least two separate large and extremely dangerous tornadoes in the Dallas Fort Worth area. Several other developing twisters were reported as a band of violent storms moved north through the metropolitan area. (AP Photo/The Dallas Morning News, Nathan Gerry McCarthy)

Dark clouds form around Arlington, Texas on Tuesday, April 3, 2012. Tornadoes tore through the Dallas area on Tuesday, tearing roofs off homes, tossing trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. The National Weather Service confirmed at least two separate large and extremely dangerous tornadoes in the Dallas Fort Worth area. Several other developing twisters were reported as a band of violent storms moved north through the metropolitan area. (AP Photo/The Dallas Morning News, Nathan Hunsinger )

Ten year old Ty Proctor surveys damage after a tornado struck Arlington, Texas on Tuesday, April 3, 2012. 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. (AP Photo/The Fort Worth Star Telegram, Ron Jenkins)

A fallen tree crushes a truck in Arlington, Texas on Tuesday, April 3, 2012. 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. (AP Photo/The Fort Worth Star Telegram, Ron Jenkins)

A sign is destroyed from a passing storm in South Arlington, Texas on US 287 on Tuesday, April 3, 2012. 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. (AP Photo/The Fort Worth Star Telegram, Paul Moseley)

Harold Widner clears a fallen tree from his truck in Arlington, Texas on Tuesday, April 3, 2012. 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. (AP Photo/The Fort Worth Star Telegram, Ron Jenkins)

A downed tree lays on top of a parked car after a tornado reportedly tore through the southeastern portion of Dallas County Tuesday, April 3, 2012 near Lancaster, Texas. The National Weather Service confirmed at least two separate large and extremely dangerous tornadoes in the Dallas Fort Worth area. Several other developing twisters were reported as a band of violent storms moved north through the metropolitan area. Officials had no immediate information about injuries. (AP Photo/The Dallas Morning News, G.J. McCarthy)

Trailers lay smashed atop one another after a tornado reportedly tore through the southeastern portion of Dallas County, Texas, Tuesday, April 3, 2012 near Lancaster, Texas. The National Weather Service confirmed at least two separate large and extremely dangerous tornadoes in the Dallas Fort Worth area. Several other developing twisters were reported as a band of violent storms moved north through the metropolitan area. Officials had no immediate information about injuries. (AP Photo/The Dallas Morning News, G.J. McCarthy)

The Green Oaks Nursing and Rehabilitation center is damaged after tornadoes swept through the area, Tuesday, April 3, 2012, in Arlington, Texas. (AP Photo/The Fort Worth Star Telegram, Rodger Mallison)

Erin Foy, left, and her sister Immerriea White pull their luggage through the rain as their family abandons their destroyed home in the Portofino Apartments in Lancaster, Texas on Tuesday, April 3, 2012. Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/The Fort Worth Star Telegram, Ron T. Ennis)

Threatening clouds continue to move through southern Tarrant and Dallas counties after a tornado swept through Lancaster, Texas on Tuesday, April 3, 2012. Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/The Fort Worth Star Telegram, Ron Ennis)

A funnel cloud begins to form in southern Dallas county before a tornado touched down in Lancaster, Texas Tuesday, April 3, 2012. Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/The Dallas Morning News, Parrish Velasco)

Constable Clint Burgess rescues Phoebe from under a destroyed home, Tuesday, April 3, 2012 after a severe storm moved through Arlington, Texas. Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/The Fort Worth Star Telegram, Ron Jenkins)

Neighbors view what remains of a home in Arlington, Texas, Tuesday April 3, 2012. Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/The Fort Worth Star Telegram, Ron Jenkins)

This aerial photo shows damage from a tornado in Lancaster, Texas just south of Interstate 20 near Bonnie View Road on Tuesday, April 3, 2012. Tornadoes and violent storms raked through the Dallas area Tuesday, crumbling the wing of a nursing home, peeling roofs from dozens of homes and spiraling big rig trailers into the air like footballs. (AP Photo/The Dallas Morning News, Vernon Bryant)

Deeann Powell recovers items from the trailer that a tornado lifted from her driveway to her neighbor's yard two doors down Tuesday, April 03, 2012 in Arlington, Texas. Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/Kim Johnson Flodin)

Deeann Powell, and her children, from left, Jess, 8, Benjamin, 11, neighbor Christian Brangers, 12 second from right, and son Daniel, 12, right, recover items from their trailer that was carried two doors down to a neighbor's yard by a tornado in Arlington, Texas Tuesday, April 3, 2012. Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/Kim Johnson Flodin)

Jackie Lucas and Pam Lacy sweep up debris in the middle of Marsfield Court as residents in southwest Arlington deal with the aftermath of a tornado that did extensive damage in the area, Tuesday, April 3, 2012. (AP Photo/The Fort Worth Star Telegram, Rodger Mallison)

Damaged vehicles sit in front of Essie B. Crosby Elementary School following a tornado that swept through the area Tuesday, April 3, 2012, in Forney, Texas. (AP Photo/Tony Gutierrez)

A damaged vehicle is seen as area residents survey the tornado damage to their neighborhood Tuesday, April 3, 2012, in Forney, Texas. Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/Tony Gutierrez)

Yuomiko Paige, center left, hugs her neighbor Doris Sparks as Sparks gets emotional when talking on the phone about the damage to the Diamond Creek subdivision in Forney, Texas after a tornado struck on Tuesday, April 3, 2012. (AP Photo/The Dallas Morning News, Kye R. Lee)

A nursing home is damaged by a tornado in Arlington, Texas on Tuesday, April 3, 2012. Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/The Fort Worth Star Telegram, Khampha Bouaphanh)

A house is damaged by a tornado in Kennedale,Texas, on Tuesday, April 3, 2012. Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/The Fort Worth Star Telegram, Khampha Bouaphanh)

An area resident surveys the damage to a home after a tornado swept through the area 12Tuesday, April 3, 2012, in Forney, Texas. Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/Tony Gutierrez)

Residents survey damages caused by a tornado in Kennedal, Texas, on Tuesday, April 3, 2012.Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/The Fort Worth Star Telegram, Khampha Bouaphanh)

Homes in Kennedale Texas lay destroyed by a tornado on Tuesday, April 3, 2012. Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/The Fort Worth Star Telegram, Khampha Bouaphanh)

Homes in Lancaster, Texas lay destroyed by a tornado on Tuesday, April 3, 2012. Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/The Fort Worth Star Telegram, Khampha Bouaphanh)

A tornado touches down in Lancaster, Texas south of Dallas on Tuesday, April 3, 2012. Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/The Dallas Morning News, Parrish Velasco)

A vehicle sits toppled over in front of tornado damaged homes Tuesday, April 3, 2012, in Forney, Texas. Tornadoes tore through the Dallas area Tuesday, peeling roofs off homes, tossing big rig trucks into the air and leaving flattened tractor trailers strewn along highways and parking lots. (AP Photo/Tony Gutierrez)

A flag lays on the twisted metal base of a mobile home following a tornado in Woodward, Okla., Sunday, April 15, 2012. Residents of several states scoured through the wreckage of battered homes and businesses after dozens of tornadoes blitzed the Midwest and Plains Saturday night. (AP Photo/Sue Ogrocki)

Jose Guerrero is framed by twisted metal as he looks for salvageable items in the mobile home of his sister in law, following a tornado in Woodward, Okla., Sunday, April 15, 2012. Residents of several states scoured through the wreckage of battered homes and businesses after dozens of tornadoes blitzed the Midwest and Plains Saturday night. (AP Photo/Sue Ogrocki)

Workers check out the carnival that was damaged on Sunday, April 15, 2012, in Wichita, Kan. The carnival was game aged by one of several tornadoes that hit the state on Saturday, April 14, 2012. (AP Photo/Jeff Tuttle)

An aerial view of the destruction of the Oaklawn neighborhood in Wichita, Kansas, on Sunday, April 15, 2012. The damage was caused by one of several tornadoes that hit the state on Saturday, April 14, 2012. (AP Photo/Jeff Tuttle)

Carole Beckett reacts as she sorts through belongings at her home after a tornado moved through Woodward, Okla., Sunday, April 15, 2012. Residents of several states scoured through the wreckage of battered homes and businesses after dozens of tornadoes blitzed the Midwest and Plains Saturday night. (AP Photo/The Oklahoman, Bryan Terry)

Melissa Davis, of Salina, Kan., walks past what remains of the stairway of her friend's home, Sunday, April 15, 2012, in Marquette, Kans. Residents of several states scoured through the wreckage of battered homes and businesses after dozens of tornadoes blitzed the Midwest and Plains Saturday night. (AP Photo/Salina Journal, Tom Dorsey)

Sara Shogren, left, is hugged by Zoey Patrick as friends sort through the rubble of the Patrick's home, Sunday, April 15, 2012, in Marquette, Kans. Residents of several states scoured through the wreckage of battered homes and businesses after dozens of tornadoes blitzed the Midwest and Plains Saturday night. (AP Photo/Salina Journal, Tom Dorsey)

Oklahoma Gov. Mary Fallin, right, and John Doak, left, Oklahoma Insurance Commissioner, tour a tornado damaged neighborhood in Woodward, Okla., Sunday, April 15, 2012. Residents of several states scoured through the wreckage of battered homes and businesses after dozens of tornadoes blitzed the Midwest and Plains Saturday night. (AP Photo/Sue Ogrocki)

The Boeing Company facility in Wichita, Kan. is damaged Sunday, April 15, 2012 after tornadoes moved through the area Saturday. The reported tornado that struck Wichita caused damage at McConnell Air Force Base and the Spirit AeroSystems and Boeing plants. Sedgwick County, home to Wichita, declared a state of disaster and said preliminary estimates suggest damages could be as high as $283 million. (AP Photo/Jeff Tuttle)

An aerial view shows the damage to Spirit Aerosystems from Saturday's tornado in Wichita, Kan., Sunday, April, 15, 2012. The massive storm system that plowed through Kansas this weekend damaged businesses, uprooted trees, caused power outages and upended about 100 homes in a Wichita mobile home park. But no serious injuries or fatalities were reported, which one authority called pretty much a miracle. (AP Photo/Jeff Tuttle)