When a tornado warning is issued, take shelter in a building with a strong foundation. If shelter is not available, lie in ditch or low-lying area a safe distance away from the unit. Go to safety immediately. Be alert to changing weather conditions. Blowing debris or the sound of an approaching tornado may alert you.
Many people say it sounds like a freight train.
The tornado may be approaching your area. If you are outside, hurry to the basement of a nearby sturdy building or lie flat in a ditch or low-lying area. If at home Go at once to the basement, storm cellar, or the lowest level of the building. If there is no basement, go to an inner hallway or a smaller inner room without windows, such as a bathroom or closet. Get away from the windows.