LAUREL COUNTY, Ky. — Storm systems sweeping across the Midwest have left at least 21 dead, including nine people killed after a tornado sparked what authorities called a mass casualty event in southeastern Kentucky.

“Kentucky, we’re starting today with the tough news that we lost at least 14 of our people to last night’s storms, but sadly, this number is expected to grow as we receive more information. Please pray for all of our affected families,” Beshear said Saturday in a post on social media platform X.

“The search is continuing in the damaged area for survivors,” the office of Sheriff John Root said in a statement posted on social media. An emergency shelter was set up at a local high school and donations of food and other necessities were arriving.

“Lives have been changed forever here tonight. This is a time we come together, and we pray for this community,” London Mayor Randall Weddle told WKYT-TV. “I have never personally witnessed what I‘ve witnessed here tonight. There’s a lot of devastation.”

The storms were part of a weather system Friday that killed seven in Missouri and also spawned tornadoes in Wisconsin, left several hundred thousand customers without power in the Great Lakes region and brought a punishing heat wave to Texas.

“This is truly, truly devastating,” Spencer said, adding that the city was in the process of declaring an emergency and an overnight curfew Friday had been put into place in the neighborhoods with the most damage.

The number of people injured was not immediately known. Barnes-Jewish Hospital received 20 to 30 patients from the storm with some in serious condition and most expected to be discharged by Friday night, according to hospital spokesperson Laura High.

National Weather Service radar indicated a tornado touched down between 2:30 p.m. and 2:50 p.m. in Clayton, Missouri, in the St. Louis area. The apparent tornado touched down in the area of Forest Park, home to the St. Louis Zoo and the site of the 1904 World’s Fair and Olympic Games the same year.

At Centennial Christian Church, City of St. Louis Fire Department Battalion Chief William Pollihan told The Associated Press that three people had to be rescued after part of the church crumbled. One of those people died.

John Randle, a 19-year-old University of Missouri-St. Louis student, said he and his girlfriend were at the St. Louis Art Museum during the storm and were hustled into the basement with about 150 other people.

Christy Childs, a Saint Louis Zoo spokesperson, said in a text that the zoo would remain closed Saturday because of downed trees and other damage. Childs said all animals were safe and that there were no reports of significant injuries to staff, guests or animals.

A tornado struck in Scott County, about 130 miles (209 kilometers) south of St. Louis, killing two people, injuring several others and destroying multiple homes, Sheriff Derick Wheetley wrote on social media.

“Severe thunderstorms producing large to very large hail, damaging gusts and a couple of tornadoes are expected across the southern Plains,” the National Weather Service's Storm Prediction Center said on its website Saturday. The risk was especially high for north Texas.