fadient: These “mammatus clouds” were photographed above Hastings, Nebraska, after a destructive thunderstorm in May 2005. Although their formation is not completely understood, these rare clouds usually develop at the base of a thunderstorm, and appear lumpy because of instabilities and temperature differences between sinking and rising air.  Umm, that’s some apocalypse Ghost Busters shit.

fadient:

These “mammatus clouds” were photographed above Hastings, Nebraska, after a destructive thunderstorm in May 2005. Although their formation is not completely understood, these rare clouds usually develop at the base of a thunderstorm, and appear lumpy because of instabilities and temperature differences between sinking and rising air. 

Umm, that’s some apocalypse Ghost Busters shit.

(via puothole-deactivated20130517)