Wind gusts over 70 mph, hail bigger than baseballs and strong tornadoes are all possible from these storms.

Supercell thunderstorms are dangerous storms that unleash large hail, roaring winds and powerful tornadoes.

(CNN) — Much of the United States is experiencing prolonged and extreme cold weather, with recent winter storms, dangerous windchills and record low temperatures affecting millions of people. As ...

(CNN) — Punxsutawney Phil, the groundhog weather icon, saw his shadow when he was plucked from his warm burrow and thrust out into the frigid air Monday morning. According to Phil, that means six more ...

(CNN) — The US is a nation divided, with frigid conditions, snow and ice entrenched east of the Rockies all the way into Florida, and record warmth and paltry snowfall in the West. The dichotomy has ...

(CNN) — A rapidly strengthening coastal storm is expected to develop this weekend and bring heavy snow, strong winds and coastal flooding to the Southeast amid an outbreak of deadly cold temperatures.

(CNN) — Weather forecasters at the National Weather Service, The Weather Channel and this very news organization had a name for the kind of storm that upended daily life for residents of the Northeast ...