Detroit, Mich. – Drivers across Metro Detroit should slow down immediately as visibility drops to 1/4 mile in spots and a light glaze of ice forms on bridges along I-75 and I-94 before 9 a.m. Sunday.
According to the National Weather Service in Detroit/Pontiac, areas of freezing fog developed before daybreak and will continue expanding across southeast Michigan through the early morning hours. Visibility will vary sharply over short distances, generally between one-half mile and 2 miles, but localized dense fog could reduce visibility to one-quarter mile, especially in low-lying areas.
Temperatures remain below freezing, allowing moisture from the fog to create a thin glaze on untreated roads. Elevated surfaces such as bridges and overpasses along I-696, M-59 and US-23 are particularly vulnerable to slick spots.
Farther north, the National Weather Service in Gaylord reports patchy dense freezing fog across the Saginaw Bay region and west along the M-55 corridor toward Manistee. Cities including Midland, Bay City, Flint and Port Huron may encounter rapidly changing conditions through mid-morning.
Motorists should use low-beam headlights, increase following distance and avoid sudden braking. Sidewalks, driveways and parking lots may also become slippery.
Conditions are expected to improve gradually after sunrise as temperatures rise and fog thins, but drivers should remain alert for lingering icy patches through late morning.
