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 ...

GRAND RAPIDS, Mich. (WOOD) — The beginning stages of tornadic development were seen live as Storm Team 8 tracked strong rotation over Allendale Saturday evening. A wall cloud became visible on the ...

A relentless thunderstorm threat remains locked over the Prairies after several tornado watches and warnings hit parts of Saskatchewan on Wednesday. The renewed storm risk will be more widespread for ...

A time-lapse video showed a rotating storm in Winnebago, Iowa, that brought heavy rain and flooded streets while tennis-ball-sized hail fell in Watertown, Minnesota.

LUBBOCK, Texas (KCBD) - update 10:53 p.m. - A few severe storms will continue next few hours, primary risk being large hail and damaging wind. Then our attention will turn to the afternoon, for the ...