WGN-TV Chief Meteorologist Tom Skilling and the WGN Weather Center staff provide daily coverage of weather in the Chicago area.

Update on the first day of our online 7-day forecast

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UPDATED FORECAST FOR THE FIRST DAY OF THE 7DAY FORECAST ONLINE

...WINTER WEATHER ADVISORY THROUGH TONIGHT....

Some lake-effect snow has begun in areas along Lake Michigan. More general snow develops across the remainder of Chicago area this aternoon and falls steadily through much of Tuesday night accumulating 3 to 6" before tapering to flurries in Wednesday's pre-dawn hours. East to northeast winds 5 to 14 m.p.h. lead to less severe wind chills than on Monday.

The snow accumulation with this system is to be the biggest to date this season in the city and across soithern suburbs.

Caution advised for slippery travel. Tuesday's daytime high around 22-degrees with steady or slowly rising temps Tuesday night. Readings reach the mid 20s by Wednesday morning.

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