Even more (20 again) amazing cloud formations

Arcus layers, Australia

Photo: ~Bootscrub

Fallstreak hole, Linz, Austria

Photo: H. Raab

Lenticular UFO, Kananaskis Country, Alberta

Photo: sabertasche2

Wave clouds, Tadrart region, Algeria

Photo: Wikimedia Commons

Shelf cloud, Kearney, NE

Photo: NebraskaSC

Wall cloud, South Dakota

Photo: Michael Carlson – Photography

Cirrocumulus cloud, Chilbridge, England

Photo: .FuturePresent.

Cumulonimbus, Beverley, England

Photo: l.bailey_beverley

Lenticular roll cloud?, Lake Tahoe, NV

Photo: eglavin

Arcus clouds, Wellington, New Zealand

Photo: PhillipC

Mammatus, Saylorsburg, PA

Photo: Nicholas_T

Cirrostratus nebulosus, Santa Catarina, Brazil

Photo: emarquetti

Cloud iridescence

Photo: Brocken Inaglory

Lenticular clouds, France

Photo: Marc Veraart

“The Cloud of Darkness,” Silver City, NM

Photo: deansouglass

Lenticular blanket, Lebanon, MO

Photo: thefixer

Wave cloud, Amsterdam Island

Photo: Wikimedia Commons

Cumulonimbus, Melbourne, Australia

Photo: Gideon Tsang

Shelf cloud, Hampton, MN

Photo: chief_huddleston

Vortex cloud, Wallops Island, VA

Photo: NASA Langley Research Center (NASA-LaRC)

Source: matador