A Winter Weather Advisory is in effect until midnight for north central Illinois, and a Wind Chill Advisory is in effect from midnight until noon on Monday. Blowing snow will continuie to be a problem overnight and early Monday on east-west rural roads across northern Illinois. A strong pressure gradient continues to persist across the area causing very windy conditions with winds 20 to 30 mph from the northwest with gusts to 35 mph, and with temperatures expected to fall below zero tonight, wind chills may be as low as -15 to -25 late tonight and Monday morning. There will also continue to be blowing snow mainly across east/west rural highways through the ovenight hours. It will be sunny on Monday, but don't let that fool you. The afternoon high temperature will only be around 8 degrees. The tight gradient will loosen it's grip on the Stateline on Monday night, and with the ridge of arctic high pressure nudging it's way into the area, there will be excellent radiational cooling under mostly clear skies and lighter winds yielding the coldest temperatures of this winter so far. The low on Monday night is expected to be around -7. Don't be surprised to see some of the cities go lower than that. It will be sunny and very cold on Tuesday with the arctic ridge sitting right on top of our region, and the high will reach to around 12 degrees. On Wednesday the next system will approach as the arctic ridge moves to the east. Clouds will increase, along with a chance of light snow, and temperatures will moderate into the low 20's.
By Meteorologist
Eric Nefstead
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