A powerful storm system ravaged through the Midwest, tossing trailers, downing trees and tearing roofs from buildings, leaving at least 13 people dead.

In the city of Harrisburg in southern Illinois, at least 10 people were reportedly killed by the storm. Three other deaths were reported in Missouri. One person reportedly died inside a mobile home that was hit by the storm, while two others died in Cassville and Puxico, reported MSNBC.

The storm furiously tore through the small city of Branson, Mo. as it caused severe damage near the famed music theaters. The tornado ripped up the roof a Hilton Hotel leaving more than 30 people hurt as tourists slowly begin making their way to the city. They were treated at a hospital for cuts and bruises.

If it was a week later, it'd be a different story, said Bill Tirone, assistant general manager for the 530-room Hiltons of Branson and the Branson Convention Center, according to the Associated Press. Hotel workers were able to get all guests to safety.

Other witnesses said the tornado hit the city's main strip, moving through the entertainment district.

The theater next to me kind of exploded. It went everywhere. The hotels on the two sides of me lost their roofs. Power lines are down. Windows are blown out, John Moore said, according to the AP. There's major, major destruction. There has to be millions dollars of damage all down the strip.

As the tornado attacked the town, he said it appeared to jump side to side.

Kansas was also hit by the severe weather. The apparent tornado struck Harveyville Tuesday evening. The Wabaunesee County Sheriff said between 40 and 60 percent of the town was severely damaged, reported KSHB.  Kansas Gov. Sam Brownback declared a state of emergency in the county.

It is quite hectic, said Bill Beasley of the American Medical Response for Shawnee and Wabaunsee counties, who said nine ambulances were dispatched to the scene, reported KSHB.  

The American Red Cross is assisting the town, setting up a shelter at the local high school.

Elsewhere in Kansas, there were reports of hail the size of golf balls and 70 mph winds Tuesday night, reported KSHB.

While tornado season usually starts in March, it is not unusual to see severe storms this time of year.

The tornadoes were formed through a powerful storm system that formed in the Rockies on Tuesday and was reportedly headed to the Ohio and Tennessee river valleys. U.S. Storm Prediction Center in Norman, Okla, said a cold front was hitting warm and humid air over the eastern half to the nation.