Amazing Mammatus Clouds in Michigan

Posted on August 5, 2013

Here is an amazing video of mammatus clouds taken by Jason Asselin in upper Michigan. The National Weather Service describes mammatus clouds as "an upside down cloud." They form when moist air sinks into dry air. They tend to indicate that severe weather has already occurred and are not a warning of yet more severe weather. You can see a couple good photos of mammatus clouds here. Take a look:

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