A fourth death in Tennessee appears to have brought the toll from severe storms that swept through parts of the Midwest and South on Wednesday to at least 13.

Chrissy Keuper of WUOT-FM in at the University of Tennessee in Knoxville has told our Newscast Desk about the fourth fatality in the Volunteer State.

As we reported yesterday, the hardest-hit location looks to have been Harrisburg, Ill., where at least six people were killed by a tornado with winds as strong as 170 mph. The St. Louis Post-Dispatch reports this morning that "whole neighborhoods were flattened" in the small city of 9,000 people, about 100 miles southeast of St. Louis.

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