Over 80 per cent of all tornadoes strike between noon and midnight. Some tornadoes appear as a visible funnel extending only partially to the ground. Look for signs of debris below the visible funnel. 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. Have regular tornado drills with your family. Designate an area in your home as a shelter, and regularly practice having your family go there as if there were a tornado. Have disaster supplies on hand. Develop an emergency communications plan.