I saw that. The entire lake was 62 degrees on the surface up to Grand Haven it looked like but was warm near shore north and on the Wisconsin side. Yesterday (Wednesday) surface temp was 65 at the Michigan City bouy and the break moved down to 30 to 36 ft and I just checked the Michigan City bouy and its 72 down 3ft and something like 60 at 53 fow.
I'm guessing the cooler water has moved out to 90 or 100 fow. If that's the case this should set things up for some really good fishing at the thermalcline.
The South End provides useful resources and discussion forums for those that fish The South End of Lake Michigan for Salmon, Steelhead, Perch, and Bass as well as elsewhere in the Region and Chicago area.