Cold weather advisory issued for 8 Michigan counties for Friday – wind chills as low as -25

The weather service describes, "Very cold wind chills 20 to 25 degrees below expected." "The dangerously cold wind chills as low as 25 below zero could cause frostbite on exposed skin in as little as 30 minutes. Understanding cold weather alertsCold weather advisory: Be Aware. A cold weather advisory is issued when seasonably cold air temperatures or wind chill values, but not extremely cold values, are expected or occurring. An extreme cold warning is issued when dangerously cold air temperatures or wind chill values are expected or occurring.