Rare cloud formation dominates Atlanta skyline - Tucson News Now

Rare cloud formation dominates Atlanta skyline

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A rare cloud formation took over the Atlanta skyline Tuesday. (Source: CNN) A rare cloud formation took over the Atlanta skyline Tuesday. (Source: CNN)

ATLANTA (CNN) – Mother Nature put on quite a show Tuesday in the skies over Atlanta.

A row of fast moving clouds hovered over the buildings in Atlanta's skyline during the late afternoon.

They are nicknamed "river of the sky" because of their flowing motion.

The scientific name is Undulates asperatus.

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.

Copyright 2014 CNN. All rights reserved.

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