Recovery and snow removal efforts will be hard due to blowing snow and decreasing temperatures. The first flakes appear to begin overnight Monday into Tuesday around 12 AM and continue through the rest of the night. We have abnormally strong clipper system that's going to pass by the state on Sunday night going through Monday. It'll be very heavy at times, maybe even on the order of 1 to 2 inches per hour in heavy bursts.
The winter storm warning is in effect for northern counties including Lake and McHenry until 6 p.m. Monday. Temperatures are forecast to fall well below freezing Tuesday night, so road conditions could remain hard through Wednesday morning. Wind chills will stay in the double digits below zero even with partly cloudy skies. Tonight, we'll have a chance of a few flurries and cold wind chills again from -15 to -30.
Travel late Sunday into Monday will be treacherous and is highly discouraged.
Very unsafe wind chills are expected, so much so that a Wind Chill Watch has been issued for much of the FOX 9 viewing area, including the Twin Cities metro. High: 27. Wind: SE-N 10-20 miles per hour, Gusting to 30mph.
The showers will occur ahead of a powerful cold front that will bring a return to cold conditions Monday. High: 1. Wind: W 15-20 miles per hour.
Multi-day delays, cancellations, or closures are likely this week due to high-impact winter weather.