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. 

Montana Outdoors July/Aug 2016 Full Issue by Montana Outdoors - Issuu

Photography In The Parks

Thunderclouds Gifts & Merchandise for Sale

The Highway

Highway 89: The Best National Park Road Trip Route

Iverson Movie Ranch: A who's who of Native American actors, including Howling Wolf, Chief John Big Tree, High Eagle, Chief Thundercloud and Chief Thunderbird, assembled on the Iverson Movie Ranch

Montana DNRC Says Drought Conditions Improving in Big Sky Country

7,983 Thunder Field Stock Photos - Free & Royalty-Free Stock

Mount Elbert - Wikipedia

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

What are lenticular clouds? - Quora

Rider through the storm: Monster cloud chases plane across

Cloud formed by Canadian wildfire illuminates how nuclear winter works

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

Thundercloud Sky In Texas : r/CLOUDS