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

Two massive wildfires burning in Arizona and Utah are doing more than scorching the landscape. They’re generating towering ...

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

This has been one of Utah's worst wildfire seasons, with close to 700 fires so far ripping through close to 114,000 acres.

The Dragon Bravo fire has been burning for more than a month, fueled by record-low humidity that has hampered containment ...

Both it and the Monroe Fire, burning further north near Monroe, Utah, are generating pyrocumulus clouds — sometimes called ...