A non-tornadic spiral shaped radar echo is apparent in the lower left quadrant of the scope image. Observed on AFB CPS-9 PPI scope. The spiral echo is about 90 miles southwest of radar location. The set was on long pulse (5 microsecond) and the antenna was elevated 1 degree.

Image ID: wea01220, NOAA's National Weather Service (NWS) Collection
Location: Maxwell Air Force Base, Alabama
Photo Date: 1959, July 1, 1501 CST


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