Severe storms roared through the Plains and Midwest on Sunday,spawning tornadoes that damaged buildings, ripped off roofs and tossedbig trucks like toys in Oklahoma.

Another tornado kicked up debris in Wichita, Kan., and a tornado was reported near Des Moines, Iowa.

Therewere no immediate reports of injuries caused by the funnel cloud thattouched down in the Oklahoma City suburb of Edmond before moving off tothe northeast.

KFOR-TV showed footage of homes damaged and carsand trucks flipped from highways near Shawnee, Okla. Other video showedflashes from electrical transformers blowing out as they were hit byhigh winds or debris from the tornado near Edmond.

SedgwickCounty, Kan., emergency management director Randy Duncan says officialsare grateful for few reports of damage from a tornado that touched downnear Wichita Mid-Continent Airport. He told CNN the area emerged"relatively unscathed.''

Tornado watches were posted from Oklahomato southern Minnesota. Forecasters had been warning for days thatsevere storms were likely across the region.

"I knew it wascoming," said Randy Grau, who huddled with his wife and two young boysin their Edmond's home when the tornado hit. He said he peered out hiswindow as the weather worsened and believed he saw a flock of birdsheading down the street. "Then I realized it was swirling debris.''

In Iowa, a tornado touched down about 30 miles west of Des Moines near the town of Earlham, the Des Moines Register reported. It was moving northeast at 55 mph toward Adel, according to the National Weather Service.

TheNational Weather Service said it was tracking a confirmed tornado nearEdmond, Okla., moving east at 30 mph around 4:19 p.m. CT.

The National Weather Service described the Oklahoma City area tornado as "large, violent and extremely dangerous.''

A helicopter pilot following the storm captured footage of an apparent funnel cloud near Wellston, Okla.

The Storm Prediction Center in Norman, Okla., said there is a risk of strong tornadoes in central parts of the state Sunday.

Forecasterssay the storms - which could also bring large hail and damaging winds -are expected to form Sunday afternoon and that the advised area alsoincludes portions of Kansas, Missouri and Nebraska.

In centralIowa, Sunday and the beginning of the week are "the biggest chance we'vehad for severe weather since 2011," forecasters at the National WeatherService told the Des Moines Register.

MeteorologistKurt Kotenberg said a large low-pressure system is parking itself overthe middle of the country and "really isn't going to move much over thecourse of the next few days. ... It's basically going to keep pulling upthat nice Gulf (of Mexico) moisture that keeps fueling everything."

Overall,Iowa has a roughly 70% chance of severe thunderstorms from late Sundayafternoon through midnight, with more storms likely on Monday andTuesday, Kotenberg said. The weather service's "hazardous weatheroutlook" warns of the potential for "all modes of severe weatherpossible," including golf-ball sized hail and winds in excess of 60 mph.

Kotenbergsaid tornadoes are most likely to the south - in Missouri, Kansas andOklahoma - but within Iowa, Des Moines and points southeast could be atthe greatest risk of seeing a twister in the state.

Thethreat of twisters comes less than a week after tornadoes left sixdead, dozens injured and hundreds of homes destroyed in Texas and justshy of the two-year anniversary of the Joplin, Mo., twister that left160 dead on May 22, 2011.

Contributing: The Des Moines Register; The Associated Press

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