Here is video from the peak of the lake effect blizzard in Grand Rapids, MI from last night between 5:00 pm and 10:00 pm EST, as 40-50 mph wind gusts and 2 inch per hour snowfall rates created near whiteout conditions and very treacherous roads. This lake effect event was a classic southwesterly flow event for Southwest Lower Michigan, and Grand Rapids is usually the hot spot for snow accumulations from these events. Shown below is a radar loop from the morning of Dec 23 through late evening: