NORFOLK, Va. — Technically called “cumulonimbus flammagenitus,” pyrocumulonimbus clouds are a rare weather phenomenon caused by intense heat. These towering clouds form when extreme heat from a ...

The brushfires in Australia are growing and have become so massive and powerful that they're creating their own dangerous weather phenomenon. It happens through the formation of "pyrocumulonimbus" ...

Pyrocumulonimbus is a variation of a fire cloud, they are formed by intense updrafts from large fires and can take on characteristics similar to thunderstorms, such as gusty winds, lightning, and even ...

SAN JOSE (NEXSTAR) – Be thankful if your morning weather forecast has never called for pyrocumulonimbus clouds. What is a pyrocumulonimbus cloud? For those of you who are rusty on your ancient Greek, ...

A pyrocumulonimbus storm combines smoke and fire with the features of a violent thunderstorm. Pollutants from these storms are funneled into the stratosphere. Image - NASA, Credit: Naval Research A ...

What NASA describes as a dangerous "fire-breathing storm system" has formed over a region of Australia threatened by wildfires. Australia's Bureau of Meteorology tweeted Monday that a pyrocumulonimbus ...

Add Yahoo as a preferred source to see more of our stories on Google. Photo by Brook Mitchell/Getty Images Pyrocumulonimbus is a variation of a fire cloud, they are formed by intense updrafts from ...