Storm Highway by Dan Robinson
Weather, photography and the open roadClick for an important message
Storm Highway by Dan RobinsonClick for an important message

Circular outflow boundaries around St. Louis - August 26

National Weather Service radar image from 6:18PM CDT on Tuesday, August 26, 2014. These outflow boundaries are caused by rain-cooled air in a thunderstorm falling to the ground and spreading out, like pouring water on a table:

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