WEATHERVIDEOHD.TV / SCIENCE PHOTO LIBRARY WEATHERVIDEOHD.TV / SCIENCE PHOTO LIBRARY
Timelapse footage of mountain wave clouds, formed as jet stream winds soar over the Rocky Mountains. The wave clouds remain stationary rather than being blown by the wind, as they form on the crests of standing waves of air, set up by the air's passage over the mountains. Filmed in Colorado, USA, in spring.
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