A tornado watch has been issued for parts of western and central Missouri and eastern Kansas until 4 a.m. central time.
The watch covers more than 3 million people and includes Kansas City and Springfield.
The main threats are a few tornadoes, widespread damaging wind gusts of up to 75 mph and isolated large hail.
That means there are now four tornado watches in effect, covering parts of South Dakota, Texas, Oklahoma, Kansas, Missouri, Nebraska and Iowa — with more than 10 million people under those watches, in cities like Oklahoma City, Tulsa, Wichita, Kansas City, Springfield and Des Moines.
Meanwhile, a flash flood warning is also in effect for several communities north of Oklahoma City including Perry, Morrison and Lucien until 12:15 a.m.
“Move immediately to higher ground!” the National Weather Service warned.
