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
• High Resolution Photo Available