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Mammatus Clouds
The Sky is Boiling
Mammatus clouds usually form on the undersides of severe storm anvils. They result from the air that has rushed up into the thunderstorm cooling and sinking, producing bubbles in the sky. They are most commonly seen on the backsides of storms, but are a sign of a powerful and possibly tornadic system.
June 27 and 29, 2005 Anoka, MN: Two storms two days apart dropped several mammatus clouds at sunset. First two photos are from June 27 and the last two are from June 29.
June 13, 2005 Anoka, MN: Brief spurt of mammatus at the end of a storm.
June 7, 2005 Andover, MN: A thunderstorm tracked to the south, but its mammatus covered anvil passed overhead.
June 11, 2004 Andover, MN: Scrappy mammatus covered the skies.
May 9, 2004 Andover, MN: Picture perfect mammatus on the backside of a supercell--my best mammatus photos ever.
July 28, 2003 Andover, MN: These were some weird looking mammatus that sat on the edge of a departing cell.
July 27, 1999 Andover, MN: Huge yellow mammatus cover the sky in the evening hours.
July 19, 1997 Farmington, MN: Some of my first storm photos--beautiful purple mammatus.
All Photos and Videos are Copyright © 1997-2007 Kevin Skow
