An unspecified number of injuries and fatalities have been confirmed in Missouri's Bollinger County after a tornado hit the Glenallen area, according to the Missouri State Highway Patrol.

At least nine other tornadoes had already been reported across Iowa and Illinois, including a "large and extremely dangerous tornado" that touched down near Canton, Illinois, on Tuesday evening, according to the National Weather Service.

Missouri Gov. Mike Parson announced he will visit hard-hit Bollinger County.

Parson will "assess damage and learn what resources will be needed during recovery" in the rural county in the state's southeast, he said in a tweet.

"We appreciate the work of our first responders and the many neighbors who reached out to help their neighbors, and our prayers are with the loved ones of those who were killed in the storms," the governor said.

Parts of eight states -- Texas, Oklahoma, Arkansas, Missouri, Illinois, Michigan, Indiana and Ohio -- are on alert for tornadoes Wednesday as a major storm sweeps through areas already reeling from devastating twisters.

As the storm continues to move east, severe weather is in the forecast for a vast area from western Texas to western New York.

The forecast comes just days after a powerful storm system unleashed violent tornadoes and severe thunderstorms across the country, killing at least 32 people and leaving thousands without power.

The National Weather Service confirmed at least 81 tornadoes touched down in 14 states on March 31 and April 1. It was the largest single tornado outbreak to hit the U.S. in a year, since the one that spawned 140 twisters in southeastern states -- from Texas to Maryland -- on April 12-13, 2020.