Tornado warning

alert issued by weather forecasting agencies when a tornado is spotted

A tornado warning is an alert that means that a tornado or funnel cloud has been spotted around the area, and that people should take cover. When tornadoes have been spotted, the tornado sirens make sound in that place, letting people know that they have been seen.

Tornado warnings are higher than the warning of a Tornado watch, but there is an even higher level, which is a tornado emergency.