by Skip Via
skip@westvalleynaturalists.org
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Lenticular clouds are stationary, lens-shaped clouds that typically (but not always) form over or near mountains. The word “lenticular” comes from the Latin word lens, which describes their smooth, curved shape. (“Lentil” also comes from this root, appropriately enough.) Unlike most clouds that drift across the sky, lenticular clouds often stay in the same place for hours. The wind is still moving through them, but the cloud itself keeps forming and evaporating in the same spot, making it appear motionless.
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