There are many reasons to avoid cars when a tornado is imminent. Severe thunderstorms which produce tornadoes can produce flooding rains, hail, and strong winds far from the tornado-producing area, all of which can make driving difficult or even impossible. Any of these situations can leave drivers stranded in the path of the tornado far from substantial shelter. When coupled with driver panic, they may also result in dangerous but preventable accidents. This situation would be magnified greatly if all the residents of a warned area left in their vehicles, which would cause traffic jams and accidents as the tornado approached. Numerous victims of the deadly Wichita Falls, Texas tornado on April 10, 1979 died in their vehicles in such a situation.