Tornado watch:

Conditions are favorable for thunderstorms capable of producing tornadoes. Be ready to go to a safe location.

Tornado Warning:

A tornado has been spotted or is expected soon. Seek shelter in a safe location immediately.

What To Do:

At home, go to a basement or interior room away from windows. At work or school follow tornado drills and go to the safe area. Outside, if sturdy shelter is unavailable lie flat in a ditch and cover your head.