On July 12th, 2021, odd clouds were all on Marshall Shepherd's social media feeds. Images and videos show ominous-looking clouds moving into North Georgia. People dashed from ball fields or their houses, clutching their phones to capture the event. Jane Worley, a University of Georgia colleague of Shepherd, sent one with the comment, "Thought you might like."

She had no idea that she was photographing a shelf cloud drifting past her own community 40 miles away. So what exactly are these clouds?

According to scientists, warm air collides with cooler air, causing moisture in the air to condense from a gas to droplets or frozen particles. Aside from science, clouds create strange and fascinating patterns and pictures.

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