Get down on the floor of your car and wait out the storm. Hailstorms generally last only a few minutes. Drive only if necessary. Debris and washed-out roads may make driving dangerous, and heavy rain and hail restrict visibility. Avoid flooded roadways.
Television sets are particularly dangerous during thunderstorms.
Avoid bathtubs, water faucets, and sinks because metal pipes can transmit electricity. Listen to a battery powered radio or television for the latest storm information. Even an automobile is better than being caught in the open. If no structure is available, get to an open space and squat low to the ground with your hands on your knees as quickly as possible. The idea is to make yourself as low to the ground as possible while maintaining the smallest possible area in contact with the ground.