Thundercloud Over Montana
This picture is not of an alien invasion. It is a thunderstorm cloud called a supercell that was photographed in Glasgow, Montana.
![](https://develop.bigthink.com/wp-content/uploads/2013/05/origin-430.jpg?w=480&h=270&crop=1)
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This picture is not of an alien invasion. It is a thunderstorm cloud called a supercell that was photographed in Glasgow, Montana. It lasted but a few hours and caused minor damage. Read more about this phenomenon here.
Image Credit & Copyright: Sean R. Heavey