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Mt Rainier dec 2008 time lapse cloud cap(lenticular cloud) formation

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Published on Dec 25, 2008

A Time lapse of a cloud formation on top of Mt rainier.The cap cloud (the official name is "lenticular cloud") is formed when warm, moist air runs into the surface of Mt. Rainier. The mountain's topography forces the air upward, which cools and condenses the air -- turning it into a cloud.

As the air sinks back on the other side of the mountain, it dries out and the cloud dissipates. That's why it just hangs over the summit area.

(Although it looks like it is "hanging" over the mountain, air is continually flowing over the summit.)

Locals have used the cap cloud as a sign that rainy weather is on the way, as it usually occurs with southwesterly flow in the upper atmosphere -- a usual precedent to rainy weather. However, that's not always the case. please watch in high resolution. It looks like a cap. If you look closely you can see an almost perfect cone in the middle of the clouds over the top of the mountain. It took about 1 & 1/2 hours to get this time lapse.Lenticular clouds, stationary lens-shaped clouds, aligned perpendicular, altocumulus, lenticularis stratocumulus lenticular,cirrocumulus (UFOs).clouds chemtrails mountains beiber weather number mt sky form lenticular apod cold event skies living air justin beiber anti capture rainier
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