Mammatus clouds are cellular patterns of pouches hanging underneath the base of a cloud, typically a cumulonimbus raincloud. The name derives from the Latin mamma (meaning "udder" or "breast")
— Massimo (@Rainmaker1973) October 5, 2023
These filmed over the Chinese province of Hubei pic.twitter.com/sETii7Zm1W
UH OH
https://www.the-sun.com/news/17158828/hybrid-storm-forecast-east-coast-noreaster-tropical-cyclone-conditions