High winds and dry conditions are fueling the flames of the Lee fire, which is now the sixth-largest in Colorado’s history ...

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

New mandatory evacuations were ordered in the Lee fire late Friday night and early Saturday morning as the blaze grew nearly ...

The wildfire that destroyed the historic Grand Canyon Lodge​ earlier this month has expanded in recent days, fueled by hot, ...

There were 8 new fires reported across the U.S. on Wednesday, as crews work to manage 42 uncontained large fires covering 576 ...

Wildfires burning at the Grand Canyon and in Utah are so hot that they're spurring the formation of "fire clouds" that can ...

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 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.

Historically dry conditions have combined with gusty winds to make it harder for crews to get a handle on a wildfire burning ...

Pyrocumulus clouds can also increase wildfire spotting, which is when a fire produces sparks or embers that are carried by the wind and start new blazes beyond the zone of the main one.