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Amazing weather shots. Use as hook Weather Unit (especially cloud formations)

The Christmas Tree Cluster is another merrily-monikered cloud of active star formations, located 2,600 light-years away in the constellation of Monoceros, the Unicorn.

Amazing cloud formations and colours

Winged cloud formations. Courtesy of Capt. Bryan Clark

Appearing as a slender, horizontal spiral of cloud, cirrus Kelvin-Helmholtz is one of the most distinctive cloud formations. However, it tends to dissipate only a minute or two after forming and, as a result, is rarely observed.

Cloud Formations Photography..Mammatus Clouds very rare but beautiful

Known as mammatus clouds, these strange, pouchy formations often occur in association with a thunderstorm. They have been seen in lots of places, including the midwestern United States. In mammutus clouds, evaporation causes pockets of negative buoyancy as it cools the air inside the cloud. This makes the clouds puff downward instead of up like cumulus clouds, and they end up being like upside-down bubbles.

Roll clouds are just one of the weird weather phenomenon that can happen when winds go wild. Roll clouds are a type of arcus cloud, which is a category of low cloud formations. They sometimes form along with storms too, born out of the storm’s downdraft. Sinking cold air causes warm, moist air on the planet’s surface to climb to higher altitudes, where the moisture condenses into cloud form. Img: Roll cloud in Uruguay

Mt. Shasta cloud formations. Photo by Paul Rafuse

Strange cloud formations