Mammatus Clouds Over Olympic Valley
Credit & License: Matt Saal (Wikipedia) Explanation: What's happened to these clouds?
Normal cloud bottoms are flat because moist warm air that rises and cools will
condense into water droplets at a very specific temperature, which usually corresponds to a very specific height. After water
droplets form that air becomes an opaque cloud. Under some conditions, however,
cloud pockets can develop that contain
large droplets of water or ice that fall into clear air as they evaporate. Such
pockets may occur in
turbulent air near a
thunderstorm, being seen near the top of an
anvil cloud, for example. Resulting
mammatus clouds can appear
especially dramatic if sunlit from the side. These
mammatus clouds were photographed last August over
Olympic Valley,
California,
USA.
Also, if you click on the link for thunderstorm, it takes you to a cool picture of a thunderstorm in Montana.
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