Strange clouds: June 17, 2010 Thunderstorms in MN
Image by Mary J.I.
I am not sure but I wonder if these clouds were part of the storm system that brought a record-breaking tornado outbreak to MN. We were too far north for the tornados, but I thought clouds like these must have produced some rather severe weather somewhere in the area. There was a period of lightning and heavy rain after these clouds rolled in.
Note: strange hole in the cloud in the center.