Rare cloud formation spotted over Atlanta

Wednesday, February 26, 2014, 7:54 PM -

Mother Nature put on quite a show Tuesday in the skies over Atlanta.

Check out these fast moving cloud formations, nicknamed "river of the sky" because of their flowing motion.

The scientific name is undulatus asperatus.

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The clouds form when two fronts meet but scientists can't agree if they are caused by a cold-warm front or a dry-moist front.

The Royal Meteorological Society is keeping a close eye on the rare formation. They're trying to decide if it deserves a separate cloud classification.

If they decide that it does, it will become the first cloud to receive a new name in 63 years.