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EDMOND, Okla. -- One of several tornadoes spawned by a powerful storm system rumbling through the Plains and Midwest has leveled several mobile homes in an area southeast of Oklahoma City.

Reports of injuries in the mobile home park near Shawnee about 35 miles southeast of Oklahoma City couldn't immediately be confirmed.

A storm spotter told the National Weather Service that the tornado scoured the landscape in the park and an area along Interstate 40.

A powerful storm system rumbled through the Plains and upper Midwest on Sunday, spawning tornadoes that damaged roofs and structures near Oklahoma City and kicked up debris in Wichita, Kan.

Forecasters had been warning for days that a big storm may barrel through the region over the weekend, and emergency responders were keeping a close eye on the system in several other states, including Missouri, Iowa, Wisconsin, Minnesota, Illinois and Texas.

I knew it was coming, said Randy Grau, who huddled with his wife and two young boys in their Edmond's home's safe room when the tornado hit. He said he peered out his window as the weather worsened and believed he saw a flock of birds heading down the street.

Then I realized it was swirling debris, Grau said. That's when we shut the door of the safe room.

I probably had them in there for 10 minutes.

In Wichita, there were few reports of damage after a storm hit near the airport shortly before 4 p.m. Sedgwick County (Kan.) Emergency Management Director Randy Duncan said officials were very grateful that the storm wasn't more severe.

The Storm Prediction Center had been warning about severe weather in the region since last Wednesday and for the past two days had warned there was a moderate risk of severe weather on Sunday.

They've been calling for this all day, Edmond resident Anita Wright said after riding out the twister in an underground shelter. She and her husband Ed emerged from their hiding place to find uprooted trees, downed limbs and damaged gutters in their home.

In Katie Leathers' backyard, the family's trampoline was tossed through a section of fence and a giant tree uprooted.

I saw all the trees waving, and that's when I grabbed everyone and got into two closets, Leathers said. All these trees just snapped.

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