sassyboyfriend:pullmebacktoearth:These “mammatus clouds” were photographed above Hastings, Nebraska,
sassyboyfriend:pullmebacktoearth: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. THESE ARE SO FUCKING COOL OK -- source link