If a tornado warning is issued for your area and the sky becomes threatening, move to your pre-designated place of safety. Severe thunderstorms are occurring. Remember, tornadoes occasionally develop in areas in which a severe thunderstorm watch or warning is in effect. Remain alert to signs of an approaching tornado and seek shelter if threatening conditions exist. Look for signs of debris below the visible funnel.
Some tornadoes are clearly visible while others are obscured by rain or nearby low-hanging clouds.
If planning a trip outdoors, listen to the latest forecasts and take necessary action if threatening weather is possible. If an underground shelter is not available, move to an interior room or hallway on the lowest floor and get under a sturdy piece of furniture. If caught outside or in a vehicle, lie flat in a nearby ditch or depression. Mobile homes, even if tied down, offer little protection from tornadoes and should be abandoned. Occasionally, tornadoes develop so rapidly that advance warning is not possible.