Mountain Wave Clouds Catch Fire at Sunset

Pics of the Day

The setting sun conspired with some spectacular cloud formations this evening (Tuesday, Jan. 6th) to put on quite a fireworks display — perfect for the next installment of ImaGeo’s new Pic of the Day feature.

I think what we’re seeing here is a classic example of a phenomenon known as mountain waves. It happens when relatively brisk winds blow across a mountainous barrier.

The mountains you see in the photograph above are actually the foothills of the lofty, elongate

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