A tornado is a violently rotating column of air extending from a thunderstorm to the ground. Tornadoes can occur in any state, but most frequently they occur east of the Rocky Mountains. The most common time of the year for a tornado is during the spring and summer months, but a tornado can occur at any time of the year. Some Tornado Facts An average 800 tornadoes are reported nationwide each year In an average year, tornadoes cause 80 deaths and over 1,500 injuries in the United States...