WEATHERVIDEOHD.TV / SCIENCE PHOTO LIBRARY WEATHERVIDEOHD.TV / SCIENCE PHOTO LIBRARY
Timelapse footage of the passing of a winter cold front, which bring snow squalls. The air clears as the front passes. A cold front is the leading edge of a mass of cold air, which is denser than warmer air. As such it cuts under warmer air in its path, lifting it and causing condensation and precipitation. Filmed in Colorado, USA, in winter.
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