A warm front lies from west central Illinois across Iowa through Sioux City to low pressure over northeastern Wyoming. The warm front will become stationary and remain to our southwest today and tonight. Meanwhile moisture will be lifted up and over the front into the retreating cold air mass over the upper midwest, and snow will spread into western parts of the Stateline this morning, and into the Rockford area by early afternoon. Therefore a WINTER WEATHER ADVISORY has been issued beginning at noon in the Freeport area, and a 2 pm in the Greater Rockford Area. Snow is not expected to be heavy, but and inch or so may accumulate by evening, and an additional 1" to 3" may add up overnight with the heaviest amounts over Jo Daviess, Stephenson, and Carroll Counties. After midnight the snow may mix with some freezing drizzle. On Tuesday there may be some freezing fog in the morning, and some additional freezing drizzle. As temperatures rise to just above freezing the freezing drizzle will change to drizzle. The low pressure will pass to our north on Wednesday night, and drag a front across the Stateline bringing an end to the precipitation. It now appears as if the next system will pass well south of Illinois Friday and Christmas Day. Our region will probably get some snow associated with an inverted trof. of low pressure stretching northward from the main storm center far to the south, but it looks like the Stateline will not get much out of that system. Canadian high pressure will feed colder air into northern Illinois on Christmas, and the rest of the Holiday Weekend.
By Meteorologist
Eric Nefstead
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