Take cover under a heavy desk or piece of furniture, and hold on to it. Use your arms to protect head and neck. If shelter is not available or there is no time to get indoors, lie in a ditch or low-lying area or crouch near a strong building. Be aware of the potential for flooding. Use your arms to protect head and neck.
Tornadoes can change direction quickly, and can lift up a car or truck and toss it through the air.
Get out of the car immediately and take shelter in a nearby building. If there is not time to get indoors, get out of the car and lie in a ditch or low-lying area away from the vehicle. Be aware of the potential for flooding. Give first aid when appropriate. Don't try to move the seriously injured unless they are in immediate danger of further injury.