Puzzling Weather


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Lenticular, or lee wave, clouds form downwind from an obstacle in the path of a strong air current. In the Boulder, Colorado, area, the obstacle is the Front Range of the Rocky Mountains. Lenticular clouds can often be seen along the lee side of the range. © University Corporation for Atmospheric Research, Photo by Carlye Calvin. Want to know more about weather? Go to JetStream - an Online School for Weather.

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