Wednesday, July 1, 2015
Harbingers of severe weather, mammatus formations showed themselves through most of day in Eastern Iowa on Saturday, June 20, 2015, appearing as early as 8:30 am. The atmosphere was rife
with moisture all day and it showed. As a severe-warned storm cell approached the position seen in the three images above, myriad mammatus festooned the underside of its enormous anvil. Spotting position here was on 260th Street, .1-mile north of US Highway 34, about 1.3-mile west of the town of New London. The top image looks northwest at 6:19 pm. The middle image faces south at 6:41 pm and the bottom image at 6:43 pm. Nikon D5000 DSLR camera.