Amazing Science
#Chicago #clouds #gifs #weather
A Dramatic Roll Cloud Briefly Overtakes Chicago
Last night a cold front rolled through Chicago, and lucky for us art consultant Amy King was on the lakefront and stopped to shoot an amazing 5-second timelapse as a low-hanging roll cloud moved ominously down the shoreline. So, what’s a roll cloud? Meteorologist Cheryl Scott explains:
What is a Roll Cloud and how does it form? It’s a low, horizontal, tube-shaped cloud. It is formed by winds changing speed/direction when the air temperature reverses its state (resulting in warm air on top of cool air). The shear in the atmosphere sets up a rolling motion, think [of a] rolling pin used in a baking.
You can read a bit more about roll clouds—also called an Arcus Cloud—on Wikipedia. (via @kingartcollective)
#Chicago #clouds #gifs #weather
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