Be prepared to seek shelter. What is a Tornado Warning A tornado warning is issued when a tornado has been sighted in the area. Immediately seek safe shelter. An approaching cloud of debris can mark the location of a tornado even if a funnel is not visible. Before a tornado hits, the wind may die down and the air may become very still.
Tornadoes generally occur near the trailing edge of a thunderstorm.
It is not uncommon to see clear, sunlit skies behind a tornado. If you spot a Tornado Take cover immediately. Stay away from windows, doors, outside walls and open spaces. Protect your head from falling objects or flying debris. In public buildings, go to the pre-designated shelter areas.