Ann Arbor, MI – A powerful winter storm is set to sweep across southeast Michigan beginning this afternoon, prompting the National Weather Service (NWS) Detroit/Pontiac to issue a Winter Storm Warning that starts at 3 PM Saturday. Forecasters expect 6 to 8 inches of heavy, travel-disrupting snow across multiple counties, with the worst impacts hitting during the evening hours.
Weather system expected to intensify quickly this afternoon
Light snow will begin spreading eastward between midday and 4 PM, but meteorologists warn that conditions will deteriorate rapidly shortly after the warning goes into effect. The storm will strengthen as it moves across the region, dropping dense, wet snow that will accumulate quickly on roads, sidewalks, and untreated surfaces.
The warning zone covers areas along and west of US-23, including Midland, Bay, Saginaw, Shiawassee, Livingston, Washtenaw, and Lenawee counties. These locations are expected to experience the strongest snowfall rates and the most hazardous travel conditions.
Evening commute expected to be the most dangerous period
The NWS forecasts snowfall intensities of 0.50 to 0.75 inches per hour between 6 PM and 2 AM, with some spots near and south of I-94 seeing bursts up to 1 inch per hour. These heavier bands will cause rapid visibility loss and immediate snow coverage on roadways, making driving extremely dangerous.
Officials emphasize that areas around Ann Arbor, Howell, Owosso, Saginaw, and Adrian will face the highest risk during the evening and early-overnight hours.
“Travel could become very difficult, especially during the evening,” NWS meteorologists said in their update shared through the Detroit/Pontiac office.
Snow will gradually lighten overnight but will continue into early Sunday before tapering off mid-morning.
Road conditions expected to worsen quickly as temperatures fall
With temperatures dropping through the evening, untreated roads are expected to become slick and snow-packed within minutes of heavy bands moving through. Interstates and local roads could see fast-changing conditions that make travel unpredictable.
The Michigan Department of Transportation’s Drive Map will offer ongoing road status updates as plows work to keep major routes passable.
Safety reminders as winter storm impacts begin
Drivers who must be on the road are urged to prepare for slow speeds, long braking distances, and sudden visibility drops. Safety officials recommend keeping emergency supplies in vehicles—such as water, food, blankets, and a flashlight—in case of delays or roadside incidents.
Residents should also stay alert for shifts in snow intensity as the storm evolves this evening. Brief whiteout conditions are possible under heavier bands.
Snow exits Sunday, but slick spots may linger
Snow will move out of southeast Michigan by mid-morning Sunday, though some slippery patches are likely to remain on untreated and secondary roads. Drivers heading out early should remain cautious, especially in shaded or rural areas where ice may persist.
