Tornados can occur any time of day or night and at any time of year. While they are most common in the central and southeastern United States, tornadoes have been reported in all 50 states. It is important to understand the tornado alerts issued by the National Weather Service so steps can be taken to ensure safety.
Tornado watch: A tornado watch means a tornado is possible, but one has not been spotted yet. The watch area is typically large, covering numerous counties or even states and is issued as a reminder to be prepared. Meteorologists determine that conditions are favorable for the development of tornadoes and that they are possible in and near the watch area. When a watch is issued, review and discuss emergency plans, check supplies and locate a safe room. Be ready to act quickly if a warning is issued or you suspect a tornado is approaching.
Tornado warning: This is issued by the National Weather Service when a tornado has been spotted or indicated by weather radar. This means that a tornado is imminent or occurring, and immediate action is necessary to protect yourself.
If a tornado warning is issued, seek shelter immediately, preferably in a basement or storm cellar. If one is not available, go to the bathroom or innermost room of the house. Stay clear of windows. If you are in a vehicle or mobile home, get out and find shelter. If no shelter is available, lie flat in a ditch or low-lying area to protect yourself from flying debris. Cover your head with your hands.