Did you see it? The Punch hole cloud or hole punch cloud or fallstreak. Plane flew near altocumulus clouds. Caused pressure to fall. Temperatures to fall. Ice crystals formed. Moisture freezes on ...

As the ice crystals form, they immediately fall out as snow from the clouds. A hole punch cloud observed on August 17, 2008 near Linz, Austria. Credit: H. Raab, NASA ...