Revisiting June 20, 2015

Like a warning display from above, copious amounts of mammatus clouds appeared in the skies
over southeast Iowa on the evening of Saturday, June 20, 2015. That warning was realized as one
hour after the image above was captured at 6:20 pm CDT, severe weather passed through the area, including small and short duration tornadic spin ups. This image looks northeast from 260th Street,
about .1-mile north of US Highway 34 and about 1.3-mile west of the town of New London in Henry
County. The radar capture from this moment (below) shows our position (white star) and an arrow pointing to the edge of the approaching anvil containing the view seen above.

Add a little updraft and a low-base lowering in this image (below), captured at 6:29 pm, looking west. The tall and scrappy foreground feature drifted harmlessly to our north (right). Larger mammatus can be seen in the background at upper right.

More mammatus (image below) looking south at 6:41 pm. In the background is US Highway 34, where our repositioning a few miles west gave us a ringside seat to the storm's main event around
7:20 pm.

Some mammatus began forming in Eastern Iowa as early as 8:30 am on this day. Nikon D5000 DSLR camera.