Heavy snowfall has already started in part of the Upper Peninsula, with the storm's intensity expected to increase.

As central Wisconsin braces for a potentially historic winter storm, we could also experience a unique weather phenomenon.

Delaware is set to be hit with one of the largest winter storms in years as forecasts are predicting up to 18 inches in some parts of the First State. Along with anywhere from 6 to 18 inches predicted ...

Most people associate thunder and lightning with thunderstorms, but you shouldn't be surprised if you hear a rumble or two coming from the sky during heavy snow. What is thundersnow? Thundersnow is ...

Across the Northeast on the night of March 16, thunder rumbled as snow fell in a clash of seasons.

The Weather Channel's Jim Cantore experienced the rare phenomenon in same Plymouth spot 11 years ago and Monday, Feb. 23.

A powerful nor'easter will rapidly intensify off the coast tonight, undergoing bombogenesis, a pressure drop of 24 mb in 24 hours or less. This intensification is so rapid, storms like this are often ...