Flames from the Dragon Bravo Fire near the Grand Canyon are creating a massive cloud of smoke, known as a pyrocumulus cloud.

A New Jersey hiker has been missing for more than a week in Arizona’s Grand Canyon National Park where a raging “mega-fire” ...

The fast-moving Dragon Bravo Fire in northern Arizona came dangerously close to the Kaibab Lodge near the Grand Canyon on ...

The Thomas fire created a huge pyrocumulus cloud in December 2017. The Mountain View fire that largely destroyed the small town of Walker, Calif., this week gave rise to a similar phenomenon.

A: A pyrocumulus is a fire cloud. A pyrocumulus cloud forms from rising air that results from intense heating of the surface by phenomena such as wildfires or volcanic eruptions. The fires that ...

A wildfire burning in a sparsely populated region of central Oregon has become the largest fire this year and is on the verge ...

Videos circulating on social media Thursday show the fire generating massive pyrocumulus clouds — also known as pyroclouds or "fire clouds." ...