Pyrocumulus clouds explode over Bootleg Fire

What are pyrocumulus clouds and how do they form?

Bootleg fire burns through summer night

Residents scramble to evacuate Chico, California, as Camp Fire explodes in size

Dark storm clouds drift over the US Capitol

2 years from now: 'Ring of Fire' eclipse will shine over the US

Blimp crashes, catches fire at US Open

Previewing next year's 'Ring of Fire' eclipse over the US

What is the 'ring of fire' for thunderstorms in the US?

We followed firefighters in Oregon to see how they battle some of the largest wildfires in the US

Bootleg Fire in Oregon creating its own weather

Bootleg Fire in Oregon creating its own weather

Massive Bootleg Fire in Oregon Is Creating Its Own Weather

Bootleg Fire's smoke captured on satellite video

Heavy Smoke Puts A Damper On The Bootleg Fire

Man rescues bird from hailstorm

Cotton candy sky in Arkansas

Severe storm threat continues across the South on Thursday

Cool, wet weather returns to the Northeast

Storms to cause travel problems for some in the eastern US this Friday

Crews restore power, survey damage after third day of tornadoes

Les pyrocumulus

California 'Fire Cloud' spotted from space

Pyrocumulus clouds forming from wildfire smoke

Huge Pyro-Cumulus Storm Cloud Generated by Bushfire Smoke

Huge pyrocumulus cloud from Charlie Fire looms above pool-splashing families at Six Flags

Massive Southern California Fire Develops Pyrocumulus Cloud