rare noctilucent clouds after sunset |
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| navigate by keyword : cascade cloud clouds environmental global mountains night noctilucent noctiluscent nocturnal oregon phenomena phenomenon rare ridge ridgeline shining skies sky skyline strange sunset warming weird wispy |
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| A rare phenomenon: noctilucent (night-shining) clouds over the Cascade Mountains in Oregon. These clouds are so high, about 50 miles up, in the atmosphere that even more than an hour after sunset, in the dark, the sun fully illuminated these ice clouds. Unfortunately, these are becoming more common as global warming increases. |
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