Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves.

WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 9 AM CST THIS MORNING... ...WIND CHILL ADVISORY IN EFFECT FROM MIDNIGHT TONIGHT TO 10 AM CST SUNDAY... * WHAT...For the both Wind Chill Advisories, very cold wind chills expected. Wind chills as low as 25 below zero. * WHERE...Portions of central, north central and northeast Illinois. * WHEN...For the first Wind Chill Advisory, until 9 AM CST this morning. For the second Wind Chill Advisory, from midnight tonight to 10 AM CST Sunday. * IMPACTS...The cold wind chills could cause frostbite on exposed skin in as little as 30 minutes.