A tornado is a violent windstorm characterized by a twisting, tunnel-shaped cloud. It is spawned by a thunderstorm (or sometimes a result of a hurricane) and produced when cool air overrides a layer of warm air, forcing the warm air to rise rapidly.
Know the Terms
Tornado Watch - Issued when conditions are favorable for the formation of tornadoes.
Tornado Warning - Issued when a tornado has been sighted by weather radar.
Warning and Danger Signs
Actions to Consider
If at Home
If at Work
If in a Vehicle
Did You Know...
Tornadoes have been reported in every state in the U.S. and also in every season.
Contact your local or Installation's Office of Emergency Management for more information.
Landslides and Mudflows
Thunderstorms and Lightning
Nuclear Power Plants