Storm Highway by Dan Robinson
Storm chasing, 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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