Rare wave clouds dazzle onlookers


SMITH MOUNTAIN LAKE, Vir. (CNN) – A rare formation of clouds wowed onlookers at Virginia’s Smith Mountain Lake on Tuesday. The photo shows Kelvin-Helmholtz Waves, which the National Weather Service defines as, “Vertical waves in the air associated with wind shear across statically-stable regions. Can appear as breaking waves and as braided patterns in radar images and cloud photos.”

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