The National Weather Service said snowfall will continue through late tonight and early Friday, with rates of 1-2 inches per hour.
The weather bureau said the snow will be wet and heavy, with total snowfall of up to 12 inches by early Friday.
Between 6:30 and 7 p.m. Thursday, snowfall totals for the afternoon ranged from about 5 inches in Holland to 6 inches in Muskegon to nearly 7 inches near Grand Haven, according to NWS spotter reports.
Travel conditions are likely to become very hazardous through Friday morning. Visibilities will be near zero at times, especially Thursday night. Secondary and less-traveled roads, bridges and overpasses will have the greatest impacts from any ice accumulation.
The heavy, wet nature of this snowfall will make shoveling much more difficult.
The Michigan Department of Transportation reminds motorists to adjust speeds based on conditions, and to take it slow in ice and snow.
The forecast for the Grand Haven area:
Overnight: Snow. The snow could be heavy at times. Low around 26. East wind 11 to 16 mph becoming north after midnight. Chance of precipitation is 100 percent. Total nighttime snow accumulation of around 6 inches.
Friday: A 30 percent chance of snow before 1 p.m. Mostly cloudy, then gradually becoming sunny, with a high near 29. North wind 15 to 17 mph.
Friday night: Partly cloudy, with a low around 15. North wind 6 to 14 mph.