More than 50 million face the threat of severe storms. This includes the likelihood of very strong tornadoes, large hail and damaging winds as a level 4 out of 5 severe threat is issued.

Rare twin tornadoes were spotted by storm chasers over the weekend in Oklahoma, during damaging severe thunderstorms in the Plains. "I've got twins!" Storm Chaser Aaron Rigsby exclaimed Sunday while pursuing a storm in Osage County,

According to the National Weather Service in St. Louis, "...TORNADO WARNING REMAINS IN EFFECT UNTIL 1:15 PM CDT," with Madison and St. Clair counties in Illinois, along with St. Charles County, St. Louis County and the City of St. Louis, all included in the warning polygon. The advisory was issued at about 12:39 p.m. CDT Monday.

Strong storms are expected to move into the St. Louis region Monday afternoon and continue into the evening, according to 5 On Your Side's Weather Impact team. The Storm Prediction Center has placed

News Oklahoma's CJ Maclin visited Sycamore this morning to report on the widespread damage left behind by Sunday night's tornado. The Montgomery County Sheriff's Office told 2 News that one person suffered non-life-threatening injuries after a tornado toppled trees,

The Storm Prediction Center said the entire St. Louis region is at one of the highest risks for severe storms on Monday.

The National Weather Service has issued a series of tornado watches for central and southern Illinois, with powerful twisters possible Monday evening.

Towns in Parker and Wise counties are recovering from a severe storm that swept in tornadoes, caused deaths and extensive damage Saturday night.

The Missouri State Highway Patrol said that troopers were heading to Slater, Missouri, in Saline County to assist residents after storms hit the area.