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WINTER STORM WATCH IN EFFECT FROM FRIDAY MORNING THROUGH SATURDAY MORNING... * WHAT...Heavy snow possible. Total snow accumulations of 6 inches or more possible. Winds could gust as high as 50 mph. * WHERE...Midland, Bay, Huron, Saginaw, Tuscola, Sanilac, Shiawassee, Genesee, Lapeer and Livingston Counties. * WHEN...From Friday morning through Saturday morning. * IMPACTS...Travel could be very difficult. The hazardous conditions could impact the evening commute. Blowing snow will be possible resulting in reductions of visibility. Gusty winds could bring down tree branches. * ADDITIONAL DETAILS...Uncertainty exists regarding the northward progress of the rain/snow line Friday which greatly impacts total snowfall amounts should snow mix with rain or briefly change over to all-rain. Snowfall rates are expected to peak Friday evening with maximum rates near 1 inch per hour across the Tri-Cities and Thumb regions. Very strong winds are expected Saturday with gusts of 40-50 mph possible as arctic air filters in behind the system sending wind chill values into the single digits Saturday.