Sturdy shoes Develop an emergency communications plan. After a disaster, it s often easier to call long distance. Make sure everyone in the family knows the name, address, and phone number of the contact person. Tornadoes are spawned from powerful thunderstorms and the most powerful thunderstorms produce large hail. Tornadoes frequently emerge from near the hail-producing portion of the storm.
Tornadoes generally occur near the trailing edge of a thunderstorm.
It is not uncommon to see clear, sunlit skies behind a tornado.