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Waves of Clouds Flow Over South Carolina

Stormy weather in the southeast made interesting cloud formations on March 30. The National Weather Service in Columbia, South Carolina posted this video of what is says are Asperatus Undulatus, which are a wavy-looking formation but are not an official cloud category. World Meteorological Organization has not yet added the formation as an official category, the NWS said. Credit: Facebook/US National Weather Service Columbia South Carolina