Dangerous wind chill, blowing snow part of Winter Weather Advisory

CHICAGO -- Dangerous cold has settled in to the Chicago area.

Several area schools have announced they will be closed Thursday.  (You can see the full list here)

A Wind Chill Advisory is in effect through 10 a.m.  Wind chill values have the potential to reach 15 below to 30 below.

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Updates and full forecast at Chicago Weather Center

You can also expect blowing snow that could reduce visibility.

Frost bite and hypothermia are concerns with this type of weather.
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The extreme cold made work and life in general difficult for many in Chicago.  WGN's Julian Crews spoke with local firefighters and residents who are enduring the arctic blast.