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

More than 40 million people are under blizzard warnings along the East Coast from the Delmarva Peninsula up to Maine. Snow will be particularly heavy overnight as dangerous winds whip to 70+ mph along ...

(CNN) — Confidence is increasing that a powerful winter storm will form off the East Coast this weekend amid a bout of deadly cold, but predicting its track, intensity and who could see snow will take ...

(CNN) — A powerful winter storm will form off the East Coast this weekend amid a bout of deadly cold, but predicting its track, intensity and who could see snow will take another day or so to become ...