Marquette, Michigan – Heavy mixed precipitation will spread across the Upper Peninsula this morning and continue through 7 p.m. Friday, with up to 13 inches of wet snow along US-41 and a glaze of 0.10 to 0.25 inches of ice impacting travel south and east.
According to the National Weather Service in Marquette, the highest snow totals are expected from the higher terrain of Marquette and Baraga counties into the Keweenaw Peninsula. Snowfall between 6 and 13 inches is likely near Houghton and Copper Harbor, while south-central and eastern counties face a mix of snow and freezing rain.
Ice accumulations could reach one-quarter inch.
The greatest icing risk stretches from Iron Mountain to Escanaba and east toward Manistique, where US-2 and M-35 may turn slick by late morning. Along I-75 near Sault Ste. Marie, lighter ice amounts under 0.10 inch are possible, but even a thin glaze can create hazardous road conditions.
In the west, including Ontonagon and Ironwood, precipitation falls mainly as snow, limiting icing but producing slushy to snow-covered highways on M-28 and US-45. Visibility may drop below one mile during heavier bursts.
What residents should do now: Avoid unnecessary travel, check Mi Drive for live road updates, and prepare for potential scattered power outages where ice accumulates on trees and lines.
Precipitation tapers west to east by Friday evening, but slick roads may persist overnight as temperatures remain near freezing. Winter Storm Warnings and Winter Weather Advisories remain in effect through 7 p.m. Friday across much of the Upper Peninsula.
