How do harmless puffy white clouds grow into towering, potentially dangerous cumulonimbus thunderstorms? On their surface, clouds appear to be an odd contradiction of nature — light enough to float on ...

BISMARCK, N.D. (KFYR) - Last week was Severe Weather Awareness week, which covered topics from severe thunderstorms to tornadoes to extreme heat and fire danger. One question that may remain is: How ...

Add Yahoo as a preferred source to see more of our stories on Google. A week ago, Milwaukee and much of Wisconsin was slammed by severe weather – and more often than not, the storms rolled through ...

The rumble of thunderstorms across the country this week is a noisy reminder that summer is arriving—and with it, the mix of heat, humidity and unstable air that fuels these bursts of wild weather.

13 On Your Side Chief Meteorologist George Lessens explains how thunderstorms form and grow hailstones.

A week ago, Milwaukee and much of Wisconsin was slammed by severe weather – and more often than not, the storms rolled through late in the day or overnight. That isn't unusual, though, because ...

The rumble of thunderstorms across the country this week is a noisy reminder that summer is arriving – and with it, the mix of heat, humidity and unstable air that fuels these bursts of wild weather.