Here is a great example of the challenges of pinpointing snow accumulations. When the snow is blowing and you mix in very strong dynamics that produce updrafts violent enough to trigger lightning and thunder you get a dramatic variability in snowfall measurements.
For instance, at the weather lab in Eden Praire I measured twevle inches. Yet another report from Eden Priarie was as much as a foot and a half.
Graphic courtesy of the NWS in Chanhassen. Totals as of 9AM.
Lots of moisture has been laid downed in the Minnesota River Valley. Hydrologists will soon say all bets are off on how high the rivers will rise in the next month or so.