Evening Update: A Freezing Rain Advisory is still in effect for Friday evening and Saturday morning. Icy weather will be most likely starting around 9:00pm Friday night and ending after 5:00am Saturday.
The National Weather Service and some of the latest models are suggesting up to 0.1" of ice accumulation will be possible by morning, which would make for slick and hazardous roads areawide.
As we get later into the morning and temperatures warm above freezing, freezing rain will turn into the chance for showers and fog.
Be aware that even though air temps might get above 32° early Saturday morning, the ground will take longer to warm, so slick roads will still be possible through most of the morning. -BA
Original Post: Temperatures will rise into the 40's this weekend, but to get there it will get a little icy later tonight.
A Freezing Rain Advisory will begin tonight and last through Saturday morning for northern Illinois and southern Wisconsin. Temperatures have been below freezing for a week and a half and despite the air temperature rising above 32° Saturday morning, surface and ground temperatures will remain below freezing. This will cause a thin glaze of ice on the roads, parking lots and sidewalks tomorrow morning. Worst case scenario would bring us 0.10" to 0.15" ice accumulation.
Greatest timing for freezing rain will come after 11pm and last through 4am before switching to drizzle mid-morning Saturday. Be prepared for slick roads tonight and use extreme caution if you do have to travel.
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