Mobile homes are particularly vulnerable. A mobile home can overturn very easily even if precautions have been taken to tie down the unit. When a tornado warning is issued, take shelter in a building with a strong foundations. If shelter is not available, lie in a ditch or low-lying area a safe distance away from the unit. 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.
Before a tornado hits, the wind may die down and the air may become very still. An approaching cloud of debris can mark the location of a tornado even if a funnel is not visible. Tornadoes generally occur near the trailing edge of a thunderstorm. It is not uncommon to see clear, sunlit skies behind a tornado. If there is no basement, go to an inner hallway or a small inner room without windows, such as a bathroom or closet.