Forecasters say expected 'worst Christmas storm' is elevating flood risk for a large swath of southwest California.

A Pineapple Express storm could deliver one of Southern California’s stormiest Christmases in recent memory. The storm is ...

The most intense thunderstorms on the planet are thought to occur in part of Argentina, and a big group of Colorado scientists is preparing to go there in an effort to unlock their secrets .The ...

A perfect storm of storms swept across southwestern Pennsylvania Tuesday. It wasn’t a tornado. It wasn’t a microburst. It was a line of fast-moving thunderstorms that began in western Ohio and ...

A thunderstorm threat will cover parts of southern and central Alberta over the next several days, some which could turn severe in nature. Strong winds and the threat for large hail in populated areas ...

After a beautiful and quiet Saturday in Central New York, thunderstorms are expected to wrap up the weekend and could potentially cause some big problems in certain areas. Sunshine will heat up the ...

Sunshine returns. A passing shower or thundershower is possible, but most of us stay dry. Warmer with highs in the mid-80s. The hottest day of the year so far, highs near 90. Partly sunny for much of ...