5. Nacreous Clouds
This rare type of clouds are also known as mother-of-pearl clouds and they form are 15 – 25km (9 -16 miles) high in the stratosphere, well above tropospheric clouds. You can see these clouds in polar regions, but also in winter at high latitudes, Scandinavia, Alaska, Northern Canada. Lower level iridescent clouds can be seen anywhere.
And see a video of these amazing clouds below:
6. Cirrus Kelvin-Helmholtz
Read more about them here.
7. Roll Clouds
A roll cloud is a low, horizontal tube-shaped arcus cloud associated with a thunderstorm gust front, or sometimes a cold front.
See a frightening video of a roll cloud below:
8. Shelf Clouds
Written with love and coolness by Marius on August 12, 2012 in Interesting Things
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