Weather Madness Winter Weather Forecast. The best chance of heavier snowfall during this storm is in the northern Great Lakes, from northern Wisconsin to northern portions of Lower Michigan. Ice accumulations are expected along the southern edge of the snowfall contours shown below. For now, those accumulations are expected to generally be light, although it will likely lead to slippery travel. In addition, any ice on trees or power lines coupled with strong winds could lead to some downed limbs and power outages Monday.