WEATHERVIDEOHD.TV / SCIENCE PHOTO LIBRARY WEATHERVIDEOHD.TV / SCIENCE PHOTO LIBRARY
Timelapse footage of sunset illuminating bands of clouds produced by mountain waves. The bands are parallel to the mountain range, and form as air forced over the mountains sets up a standing wave downwind of them. At the crests of the wave it is cold enough for the moisture to condense into clouds. Filmed in the USA.
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