Credit: WEATHERVIDEOHD.TV/SCIENCE PHOTO LIBRARY

Caption: Timelapse footage of bursts of turbulence disrupting the normal smooth air flow through altocumulus clouds, downwind of a mountain range. Filmed in Colorado, USA, in autumn.

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Keywords: 20 seconds or greater, altocumulus, america, american, autumn, cloud, clouds, cloudscape, cloudscapes, cloudy, day, day time, lenticularis, lockdown, locked off, meteorological, meteorology, mid-day, midday, mountain waves, movement, moving, no-one, nobody, north america, outdoors, outside, skies, sky, skyscape, skyscapes, sped up, speeding up, static, time lapse, time-lapse, timelapse, travel, united states, united states of america, usa, weather, wide shot

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