Winter Weather Advisory issued as arctic cold blows into Chicago area

Weather

A classic high wind set-up coming together later Tuesday in Wednesday.

Winter Weather Advisories go into effect at 9 p.m. Tuesday through 6 p.m. Wednesday for Kane, Lake and McHenry counties in Illinois. And starting at 3 a.m. through 6 p.m. Wednesday for DuPage, Cook and Will counties in Illinois and Lake and Porter counties in Indiana.

It was issued for potential blowing snow, most pronounced in wide open area such as those west of Chicago.

Winds and falling temps set the stage for significant travel challenges in open areas where blowing and drifting snow threatens to reduce visibilities and producing drifting of the existing snow cover over open roads–likely most seriously impacting north/south thoroughfares in open areas west and north of Chicago.

A powerhouse winter storm, the second in less than a week—importantly, this one tracking north of Chicago with its heaviest snows–is to impact Chicago in differently than this past weekend’s storm.

Rather than producing significant snow accumulations, this new storm is to act as a giant atmospheric “wind machine” and is to rake the Greater Chicago area with powerful winds gusting as high as 50 mph amid falling temps.

High winds will blow and drift snow in open areas as arctic air sends temps tumbling.

Full forecast details at the WGN Weather Center

Temps will tumble Wednesday starting around 30-deg at midnight tonight, then falling to 20 by daybreak, to around 13 at noon Wednesday and to 8-above by nightfall.

In combination with roaring westerly winds, winds chills are to dip from 19 at midnight to 3 at daybreak, 7-below midday Wed and 11-below toward nightfall.

Thursday will see clouds and occasional mixed sun. It will be blustery and cold with wind gusts to 25 mph. High 16. Wind chills: +3 to 10-below through the day.

Friday won’t be as windy, partly sunny and cold. High 12–morning chills 6-below to 12-below.

Saturday will cloud over, windy and not as cold. Growing prospects for a light wintry mix of precipitation primarily afternoon and evening. High 36.

Wind chills are headed toward sub-zero and the season’s coldest air yet on the way the rest of the week.

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