Wide angle view of Altostratus undulatus wave clouds in a rarely seen undulating fan-shape accompanied by some Cirrus cloud
The altostratus undulatus cloud is a type of altostratus with undulations within it. These undulations may be visible (usually as "wavy bases"), but frequently they are hard to see. These formations will generally appear in the early stages of destabilizing return flows in the atmosphere. The wavy strips of clouds are generally near an inversion surface. Also referred to as billow clouds, wind row clouds, or wave clouds, variations of the undulatus can be elements that have merged or single elements that have stretched through the sky. They often run parallel, but can also appear to interweave across the sky, especially if dual wave systems are seen.
Size: 8688px × 5792px
Location: North Dorset District, England, United Kingdom
Photo credit: © ALAN MORGAN PHOTOGRAPHY / Alamy / Afripics
License: Royalty Free
Model Released: No
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