Green Bay, Wisconsin – Roads across northeast Wisconsin could rapidly deteriorate Sunday afternoon as heavy snow and ice transition into full blizzard conditions by evening.
According to the National Weather Service in Green Bay, a Winter Storm Warning remains in effect until 4 p.m. Sunday for Brown, Outagamie, Winnebago, and Calumet counties. Snowfall totals between 12 and 20 inches are expected across the Fox Valley region, with brief periods of sleet, freezing rain, and rain possible before the system transitions back to all snow overnight. Ice accumulations between one and two tenths of an inch may coat roads and power lines before stronger winds arrive.
At 4 p.m. Sunday, conditions escalate into a Blizzard Warning that remains in effect until 4 p.m. Monday. Wind gusts near 50 mph will produce widespread blowing and drifting snow capable of reducing visibility to near zero across major routes including Interstate 41 and U.S. Highway 41 between Oshkosh, Appleton, and Green Bay.
Farther west across Marathon, Langlade, Lincoln, Menominee, Shawano, and southern Oconto counties, snowfall totals may reach 20 to 30 inches with blizzard conditions beginning by 10 a.m. Sunday and lasting through Monday afternoon. Communities including Wausau, Antigo, Merrill, and Shawano could experience severe drifting and whiteout conditions.
Officials warn travel may become extremely dangerous or impossible during the storm’s peak. Strong winds combined with heavy snow and ice could also bring down tree branches and lead to scattered power outages.
Residents are urged to delay travel and prepare emergency supplies. Wisconsin road conditions can be monitored statewide by dialing 511.
Blizzard conditions are expected to persist into Monday afternoon, with the Monday morning commute across much of northeast and central Wisconsin likely to be severely impacted.
