Mammatus Clouds
Mammatus clouds are bubble-shaped or pouch-like cloud structures. They are also a somewhat rare example of clouds in sinking air as most clouds form in rising air. Although mammatus most frequently form on the underside of a cumulonimbus, they can develop underneath cirrocumulus, altostratus, altocumulus and stratocumulus. For a mammatus to form, the sinking air must be cooler than the air around it and have high liquid water or ice content. Mammatus result from the sinking of moist air into dry air. They could be described as upside-down clouds.
www.accuweather.com/en/weather-news/what-are-mammatus-clo...
Mammatus Clouds
Mammatus clouds are bubble-shaped or pouch-like cloud structures. They are also a somewhat rare example of clouds in sinking air as most clouds form in rising air. Although mammatus most frequently form on the underside of a cumulonimbus, they can develop underneath cirrocumulus, altostratus, altocumulus and stratocumulus. For a mammatus to form, the sinking air must be cooler than the air around it and have high liquid water or ice content. Mammatus result from the sinking of moist air into dry air. They could be described as upside-down clouds.
www.accuweather.com/en/weather-news/what-are-mammatus-clo...