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 ...

Thanksgiving means family, friends and tasty food to those who celebrate in the United States. But it's also the biggest travel week of the year, and storms have had a knack for snarling traffic and ...

Add Yahoo as a preferred source to see more of our stories on Google. Thanksgiving means family, friends and tasty food to those who celebrate in the United States. But it's also the biggest travel ...