Not all thunderstorms can produce tornadoes - only about 30% of supercell thunderstorms actually spawn these rotating columns of air. Supercells are severe thunderstorms with intense, rotating ...

Multiple tornadoes already tore through several states this week.

(CNN) — A powerful winter storm swept across the central and eastern United States, knocking out power and snarling travel during one of the busiest stretches of the holiday season. The wide-ranging ...

A sprawling storm system barreling out of Texas is slamming the Mississippi Valley with dangerous weather Saturday, threatening more than 50 million Americans with tornadoes, large hail and ...