Severe Weather 101: Tornado Basics

A Tornado WARNING is issued by your local NOAA National Weather Service Forecast Office meteorologists who watch the weather 24/7 over a designated area. This means a tornado has been reported by spotters or indicated by radar and there is a serious threat to life and property to those in the path of the tornado.

https://www.nssl.noaa.gov/education/svrwx101/tornadoes/