DAMASCUS, Ark. - Violent storms rolling across the nation's midsection unleashed tornadoes, high winds and hail in four states and killed seven people in Arkansas on Friday, including a teenager who died when a tree fell into her bedroom as she slept.

Where do you meet those people?

The storms late Thursday and early Friday ripped off roofs and toppled train cars near Kansas City, Mo.; pelted parts of Oklahoma with hail; and knocked over tents at a popular open-air market in east Texas. Severe thunderstorms were moving into Kentucky and could make for a wet Kentucky Derby on Saturday.