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

The blaze produced a "pyrocumulonimbus cloud," a gigantic thunderstorm effect that can form when wildfires get so intense ...

This condensation produces more heat, leading to even more powerful convection, and the end result is known as a pyrocumulus ...

Both fires started in the last few weeks. Pyrocumulonimbus clouds, the large mushroom-looking clouds that form from wildfires, can send smoke high enough to impact the ozone layer, while elevated ...

Dry lightning strikes have been blamed for causing a number of bushfires across Victoria. But what's the difference between dry and wet lightning?

And that is driving climate change which is adding to the frequency of megafires. Now we’re seeing those effects in “fire-clouds,” pyrocumulonimbus events. But there’s such a thing as “good fire.” ...

The vast clouds of smoke from Australia's historic ... According to Nasa, fire-generated storms called pyrocumulonimbus injected large amounts of smoke into the stratosphere more than 16km above ...