Watch vs. Warning:

A TORNADO WATCH means that conditions are favorable for the development of severe thunderstorms and tornadoes in and close to the watch area. A watch is normally issued for a large area covering numerous counties. The watch is intended to give you time to review your safety rules. The sky may be sunny, but weather changes can take place quite rapidly.

A TORNADO WARNING means that a developing tornado has been detected by National Weather Service Doppler Radar or has been reported on the ground by reliable sources. A Tornado Warning is typically issued for a portion of counties at a time and usually lasts no more than 45 minutes. If a Tornado Warning is issued for your county, you should seek shelter immediately. If you see a tornado or feel threatened, move to a safe place immediately, as precious seconds can save your life.