Plunging January temperatures necessitate extra caution when heading outdoors today and especially tonight.
The National Weather Service has issued a wind chill advisory from 6 p.m. this evening to 10 a.m Tuesday, Jan. 22, for the Chicagoland region including Crystal Lake, Cary and the surrounding McHenry County communities.
Wind chill values predicted to drop to - 20 to - 25 below zero through Tuesday morning.
Very cold air and strong winds will combine to generate dangerous wind chills, according to the National Weather Service. This leads to a risk for frostbite and hypothermia. Frostbite to exposed skin can occur in 30 minutes.
The National Weather Service advises to wear a hat and gloves if you must venture outdoors. Be sure your car is equipped with the proper emergency supplies including a blanket if traveling long distances overnight.