19 Apr Disaster Preparedness: Tornadoes
Tornadoes and Severe Storms Tornadoes are outgrowths of powerful thunderstorms that appear as rotating, funnel-shaped clouds. They extend from a thunderstorm to the ground with violent winds that average 30 miles per hour. Also, they can vary in speed dramatically, from being stationary to 70 miles per hour. With a loud roar that sounds similar to a freight train, tornadoes in the United States typically are 500 feet across and travel on the ground for five miles. Every state is at some risk from tornadoes and the severe storms that produce them....