A tornado warning is issued by the National Weather Service when a tornado has been sighted and/or indicated by radar. What you might not have noticed before is that each tornado warning tells you ...

It's important to know the difference between a tornado warning and a tornado watch:TORNADO WARNING:A tornado warning is issued when a tornado is indicated by radar or sighted by weather spotters.

A line of severe storms triggered tornado warnings for parts of the area late Wednesday, and brought dangerous wind, hail and blinding downpours to the entire Chicago area. The severe storms had ...