Move to an interior room on the lowest floor of a well-built building away from windows. If you are outdoors, in a mobile home, or in a vehicle, move to the closest substantial shelter and protect yourself from flying debris.

At 311 PM CDT, a severe thunderstorm capable of producing a tornado was located over Maryland Heights, moving northeast at 35 mph. HAZARD...Tornado. SOURCE...Radar indicated rotation. IMPACT...Flying debris will be dangerous to those caught without shelter. Mobile homes will be damaged or destroyed. Damage to roofs, windows and vehicles will occur. Tree damage is likely. Locations impacted include... St. Louis, Florissant, Chesterfield, University City, Kirkwood, Maryland Heights, Hazelwood, Webster Groves, Ferguson, Creve Coeur, Overland, Clayton, Jennings, St. Ann, Bridgeton, Bellefontaine Neighbors, Town and Country, Berkeley, Richmond Heights and Ladue. This includes the following State Parks... Scott Joplin Historic Site.