"What makes a supercell unique from all other thunderstorm types is that it contains a deep and persistent rotating updraft called a mesocyclone. If the environment is favorable, supercell ...

A powerful F3 tornado touched down in Hanover, Pennsylvania, on April 5, 1952, leaving a 17-mile path of destruction. The ...

A tornado warning has been issued for parts of Western Pennsylvania as severe weather moves through the area. COUNTIES: Southwestern Fayette County, Southeastern Green County Warning is in effect ...

At least four people have died after tornadoes and violent winds ripped through the US South, as a series of storms that are ...

After severe storms across western Pennsylvania overnight, widespread rain and thunderstorms are moving in again.

A deadly severe weather system continues to charge east Thursday and is expected to tear across more than a dozen states, from parts of Texas to the densely populated mid-Atlantic and Northeast, ...

More than two dozen tornadoes were reported in parts of the Midwest and South through Thursday morning. Severe storms also ...

A tornado warning has expired after being issued for parts of Ohio, West Virginia, and western Pennsylvania. The National ...

A severe thunderstorm warning was issued for counties across western Pennsylvania on Wednesday afternoon. The warning has now ...

A massive storm developing today is set to bring life-threatening tornadoes and potentially historic floods in what could be ...

The Storm Prediction Center has issued a "slight risk" for severe weather impacting the following counties in Pennsylvania on ...