Roll cloud: rare sight spotted in Perryville

Roll cloud: rare sight spotted in Perryville
(Source: cNews)
(Source: cNews)
(Source: Laura Reuter Manche, cNews)
(Source: Laura Reuter Manche, cNews)

PERRYVILLE, MO (KFVS) - Several viewers took pictures of a weather phenomenon Friday morning.

We got pictures from people in Perryville of a roll cloud that were taken moments after sunrise.

According to KFVS Meteorologist Bryan McCormick, this roll cloud formed when a thunderstorm collapsed and sent rain-cooled air down toward the ground.

The cold air spread out in all directions and became a "gust front," lifting and condensing warmer air it encounters. This horizontal motion is how roll clouds get their name, resembling a giant rolling pin in the sky.

Bryan called it "a truly fascinating phenomenon."

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