Japanese weather officials say atmospheric conditions will become very unstable over wide areas of western to northern Japan ...

Even on quiet nights out for dinner with my wife, weather geekdom can find its way to the surface. Friday was one of those evenings. The Italian restaurant was packed so I dropped my wife off to get ...

The video taken Monday shows pyrocumulonimbus, or storm clouds triggered by wildfires that often include lightning and rain. After the Dixie fire in Butte and Plumas counties spurred its own storm ...

Lightning is one of the first signs of a monsoon storm. It's incredibly hot. In fact, it's five times hotter than the surface of the sun, at an astounding 50,000 degrees Fahrenheit. Lightning is ...

Skygazers near Amarillo, Texas, were treated to the breathtaking sight of a cumulonimbus "mushroom" cloud associated with a thunderstorm southeast of the city Tuesday evening. A cumulonimbus cloud is ...

On two days last week, the king of clouds reigned the skies above parts of the Inland Northwest, evoking an eerie beauty and spewing impressive thunderstorms. Cumulonimbus clouds, also known as ...

The summer monsoon season sometimes passes quickly in Southern California, depriving weather watchers the joy of watching tall, majestic cumulonimbus clouds form in the sky. This year, though, the ...