Gallery: Mammatus clouds

Mammatus clouds are pouch-like protrusions hanging from the undersides of clouds. You’ll usually find them under thunderstorm anvil clouds.

Usually, they are seen beneath thunderstorm anvil clouds. But they may also be visible beneath other kinds of clouds. They are mostly made of ice, and clusters of them can stretch for hundreds of miles in any direction. However, they are short-lived, only staying in your local sky for ten or fifteen minutes at a time.

These cloud pouches are thought to be associated with severe weather. They usually show up before or after a storm, which is accurate.

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The majority of clouds are actually created by rising air. However, the fact that sinking air creates mammatus clouds makes them intriguing.

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Mammatus clouds formation in Coimbatore, India By Riazmusthafa – Own work, CC BY-SA 4.0,
Cloud bank overhead with orange bubbles and darker blue behind.
Lina Tomlin in Texarkana, Texas, caught these mammatus clouds on April 29, 2024. Lina wrote: “Stepped outside and my jaw dropped. I loved watching this massive storm cell roll by. I saw more ‘bubble’ clouds appear, and as the sun went down they lit up. I’ve never been this close to clouds like that. Thrilling!”
Apartment-like buildings in foreground with clouds with many roundish downward protrusions.
Filipp Romanov in Yuzhno-Morskoy, Russia, captured these mammatus clouds on June 4, 2023. 
Pine trees below with bubbling mammatus clouds above.
EarthSky’s Kelly Kizer Whitt shared this photo of mammatus clouds from Colter Bay in Grand Teton National Park on May 30, 2023.
Mammatus clouds: Low-hanging clouds with large rounded bumps hanging down.
Michael Geib caught these mammatus clouds from Akron, Ohio, on July 20, 2022.
Spreading sheet of white clouds with bumpy spots on underside low and far away, train in foreground.
Mammatus clouds from Kelly Kizer Whitt at the Amtrak station in Whitefish, Montana, on July 7, 2022. See the mammatus clouds on the far underside of the storm?
Young woman in long white dress on white horse under sky with many small, sunlit downward bulges from a dark cloud.
Christy Turner caught this photo of graduate Cheyann on June 13, 2020, from Calgary, Alberta, Canada. Christy wrote: “Incredible mammatus clouds and a rainbow help complete a graduation photo shoot. Since Cheyann didn’t get a proper occasion to wear her beautiful graduation gown, we scheduled a photo shoot at her grandparent’s farm. What we didn’t count on was nature delivering up an incredible backdrop post-storm.”
Rows on rows of downward bulging clouds extending nearly to the horizon.
Marlane Burns captured this image on May 15, 2020, near Robert Lee, Texas. She said: “Mammatus clouds preceding a northern thunderstorm that came out of nowhere! The wind blew the flies away and the rain settled the dust!”
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Mammatus clouds in the Nepal Himalayas By Anton Yankovyi – Own work, CC BY-SA 4.0,
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Mammatus cloud formation lit by sunset in Visakhapatnam, India By Drashokk – Own work, CC BY-SA 4.0,
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