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 ...

NEW ORLEANS (WGNO) – Following last week’s three confirmed tornadoes, I figured we should continue the conversation for this week’s WEATHER WEDNESDAY and specifically explore the question: How does a ...

Editor's note: This article has updated the status of weather alerts for Berkshire County. If you were planning outdoor activities in the Berkshires on Saturday, you likely had to reschedule. That's ...

Just one isolated supercell thunderstorm produced three tornadoes yesterday, September 22. The tornadoes formed in a line from west of Traverse City to Torch Lake and Bellaire. The National Weather ...

A powerful supercell thunderstorm, which triggered a microburst in Tempe, dropped heavy rain across the East Valley Oct. 13, flooding streets and toppling trees as wind gusts neared 70 mph. In about ...

Add Yahoo as a preferred source to see more of our stories on Google. A powerful supercell thunderstorm, which triggered a microburst in Tempe, dropped heavy rain across the East Valley Oct. 13, ...

Supercells are basically thunderstorms on steroids. These storms create some of the most violent tornadoes and can leave a path of incredible destruction. A supercell is a powerful, long-lived ...

In about 15 minutes, Tempe recorded nearly three-quarters of an inch of rain. A supercell thunderstorm forms when wind speed and direction change with height, a phenomenon called wind shear.