In Spring Hill, Tennessee, residents captured timelapse footage of a large storm cloud developing. This is what ...

the sight of a shelf cloud is a clear sign to seek shelter and prepare for the storm's arrival. Pileus clouds are the delicate caps that adorn the tops of cumulus or cumulonimbus clouds ...

Shelf clouds are low ... A wall cloud Is a rain-free piece that drops down from the main base of a cumulonimbus cloud. Wall clouds range in size from a fraction of a mile to nearly five miles ...