Nineteen tornadoes, which included some storms, struck the midsection of the United States Saturday night, according to the Associated Press. The group of severe weather moving across the Plains states hit several areas, ranging from Texas to Minnesota.

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Fortunately, no immediate casualties have been reported.

The nineteen tornadoes were reported as of 10:00 p.m. CT, the Weather Channel reported, of which included six in Oklahoma and Minnesota, five in Texas, as well as one in Kansas, Nebraska and Wyoming.

On Saturday afternoon, extremely large hail was also reported around Texas. East of Happy, Texas, tennis ball-sized hail was seen 2:30 p.m. local time, reported NBC News.

Now, more than 20 million Americans are reportedly under threat of severe weather, which include heavy rain, thunderstorms and large hail, according to Meteorologist Kelly Cass from the Weather Channel.

As Saturday night turned into Sunday morning, higher chances of tornadoes are developing as moisture is pulled north from the Gulf of Mexico.

The storms caused damages to buildings, trees and power lines, according to CBS affiliate KWTV in Oklahoma City.

Across Oklahoma, nearly 12,000 homes and business had power outage. About 3,000 in eastern Kansas and western Missouri experienced the same problem in power Saturday night.

In Lyon County, Kansas, thirty-four cars of a cargo train derailed as it toppled over after stopping due to the severe weather, according to Sheriff's Deputy Jacob Welsh.

In Wyoming's Park County, at least one tornado struck. Storms also moved across some areas in Texas, Kansas, Nebraska and Minnesota, where additional, unconfirmed tornado warnings were reported.

Southeastern Kansas and northwestern Missouri had been under tornado watches well into the morning.

By Sunday, the threat shifted east towards parts of Arkansas, eastern Missouri Illinois, and other areas.

Though tornado threats were expected to boil down late Saturday, storms bringing rain and hail could continue well into Sunday, said Jared Guyer, a forecaster with the weather service's Storm Prediction Center.

Last weekend, severe weather brought several tornadoes, causing floods and death to at least four people, according to CBS News.

TagsU.S., U.S. tornadoes, US tornadoes, US storms, storms, tornadoes