Strong winds, scattered snow showers overnight

 11PM UPDATE: Conditions will deteriorate over the next hour or two as the steadier bands of snow move in from the North and West. Visibility may drop as low as a mile with the heaviest snow. Winds will remain strong, with gusts between 45-55 mph through the night. Blowing and drifting snow remains the biggest concern along with the rapid drops in visibility. All told, a dusting of snow may be possible near I-80/I-88, up to a couple inches accumulation near the IL/WI state line. Winds and falling snow will begin to ease up after 6AM Monday.

9PM UPDATE: Winter weather advisories were expanded into North Central Illinois and the rest of our Southern Wisconsin Counties. Generally, a dusting to 2" of snow still expected, with highest totals near the IL/WI state line. Blowing snow will be the bigger concern rather than accumulations.

8:00PM UPDATE: Temperatures are below freezing just about everywhere now, with some light snow showers pushing into Western parts of the Stateline. Winds have also picked up, gusting near 40 mph for most. Wind-whipped snow showers will be possible tonight with rapid drops in visibility and a quick coating of snow possible within the steadiest bands.

Following Sunday afternoon's widespread rain and relative warmth, temperatures have started to crash this evening. Many spots will be down below freezing after 6-7PM, then into the teens overnight. This also comes with an increase in strong winds. Gusts will frequently push 45+ mph, with occasional gusts near 50-55 mph. Spotty wind-whipped snow showers are also possible, with a dusting of snow near I-88 up to a couple inches possible near the WI state line.

First the winds, strong winds have already begun filtering in on the back side of the strengthening low pressure system, with many gusts reaching 35-40 mph as of 6PM. Winds will remain strong through the night, with sustained winds up to 30 mph and gusts frequently above 45 mph. Occasionally wind gusts may even reach up to 55 mph.

A wind advisory is in effect area-wide that will run through Monday evening. Winds will begin to subside Monday afternoon, but gusts will remain above 30 mph through late evening.

This wind may also blow and drift some of the snow that is on the way. Scattered snow showers will move in after 7PM, lasting on and off through the night. Visibility may be hindered near a mile or two with the combination of snow and 45 mph gusts. Snow showers may linger through 7AM Monday before coming to an end.

A winter weather advisory has been issued for Jo Daviess, Stephenson, Carroll, and Green (WI) Counties through midday Monday with the combination of the flash freeze potential and wind-whipped snow showers. A dusting of snow may be possible, with up to a couple inches near the Wisconsin state line.

Strong winds will also result in sub-zero wind chills overnight into Monday morning, with air temperatures remaining in the teens for most of Monday afternoon. A few brief pockets of sunshine may be possible Monday before the sun sets, which will then result in overnight clearing and lows in the single digits Tuesday morning.