Thundercloud Over Montana - Big Think

This picture is not of an alien invasion. It is a thunderstorm cloud called a supercell that was photographed in Glasgow, Montana. 

The fires below - High Country News

Whirlwind: Mofina, Rick: 9780778316091: : Books

Watch: Rare funnel cloud hovers over Montana mountains

Indy Pass Adds Big White, B.C.; Montana Snowbowl; Austria's

Why don't cumulonimbus clouds form during the winter? - Quora

Where there's smoke, there's ire — Outside/In

Pyramid Peak — Washington Trails Association

Weather green sky storm hi-res stock photography and images - Page

Thundercloud over ocean hi-res stock photography and images - Alamy

Waiting with GODOT

Thundercloud Subs looking super retro at night. : r/Austin

Storm Cloud Landscape Art Print eternal Reign Painting by Chuck Black - Canada

waiting alison young • blissful hiker

Minnesota Severe Weather Awareness Week: Storms, Lightning & Hail

Thunder clouds concept hi-res stock photography and images - Alamy