Unusually sunny and mild January weather will soon give way to more snow, wind, and cold by the end of this week. 

After a string of sunny days with temperatures in the 40s, the National Weather Service has issued a winter storm watch for a large portion of West Michigan from Thursday afternoon through Friday.

The heaviest snow will fall along U.S. 131 from Grand Rapids and Kalamazoo westward into the lakeshore counties.  Storm total accumulations of 6 inches or more are possible in these areas and could exceed 10 inches in a few locations.  Strong west winds will gust to or over 30 mph and cause blowing and drifting snow.  Driving conditions will deteriorate across West Michigan Thursday evening and for the morning commute on Friday.

An area of low pressure and upper level energy located over the southern United States will lift northeastward and pass just south and east of Lower Michigan on Thursday.  Some light rain could briefly move into southern Lower Michigan later Wednesday night into Thursday morning.  Meanwhile, a cold front accompanied by snow and a push of colder, Canadian air will invade the Great Lakes later on Thursday.  This will all combined to produce a windy low pressure system with locally heavy lake-enhanced snow Thursday evening into Friday.

Keep watching FOX 17 News or check http://www.fox17online.com/weather/ for further weather updates.