The weather across north central Illinois today will be relatively quiet. The has been some fog across the area early this morning, but it will burn off by 10 am leaving skies mostly sunny. A few clouds are expected to develop during the afternoon, but temperatures will warm to near freezing or sligthly above melting some of the snow on area roadways.The wind will be 5 to 10 mph from the west becoming southwest this afternoon. The weak ridge of high pressure will shift off to the east tonight as a major winter storm begins to develop over the plains. Warm air riding up over the retreating cold air could cause some light snow to develop tonight. Amounts are not expected to be significant before the precipitation changes over to freezing rain and rain as the low pushes east across Iowa and then across northern Illinois. This track is not favorable for producing heavy snow over northern Illinois. The heaviest snow will fall to the north of the track across Wisconsin, and then northen Michigan. There may be some drizzle of freezing drizzle in the afternoon before the precipitation changes back over to snow on Saturday night. Some accumulaitons in the 2" to 3" range are possible Saturday night into early Sunday. The big news is that there will be a very intense outbreak of arctic cold air on Sunday as the departing storm system wraps up. Very strong winds of 20 to 30 mph or more are anticipated from the northwest, bringing the coldest weather of the season to the Stateline Sunday night.
Actual temperatures will drop to -5 to -10 by early Monday morning, and afternoon tempertures will remain in the single digits. Slow moderation in temps will take place by Wednesday and Thursday.
By Meteorologist
Eric Nefstead
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