June 15 Spinup?

I was firmly entrenched in my spotting position at Ross Veterinary Clinic on North Marion Road, just north of County Home Road and north of Marion, Iowa as the severe storm cell approached on Thursday evening, June 15, 2017. Suspicious ground activity at 8:13 pm CDT behind the farmstead in the distance (above) instantly caught my eye as a possible weak spinup as it sported a very tight funnel-like appearance.

A cropped-in version of the top image. Image looks north. The funnel resides in a rain-wrapped area.

8:14 pm. Still keeping a wary eye on this area. Storm was moving from upper left to lower right in the image. Nikon D7200 DSLR camera.

Radar image corresponding to 8:10 pm. The target icon is my position, with the arrow pointing to the area of interest.