dirtyhippieproductions: Lenticular - Anvil - Cirrus Kelvin-Helmholtz
nubbsgalore:photos of cloud iridescence — caused as light diffracts
dirtyhippieproductions: Lenticular - Anvil - Cirrus Kelvin-Helmholtz
resplend3nt-rap4cious: opticculture: Incredible Mammatus clouds
awkwardsituationist: mammatus clouds, named for their resemblance
coolthingoftheday: TOP TEN EIGHT MOST AMAZING WEATHER PICTURES