Another Arctic intrusion will drop temperatures into the single digits and below from late tonight through Wednesday morning. Lows will approach 10 to 15 below zero at times across northern Iowa. Combine the cold temperatures with gusty 15 to 25 mph winds Monday into Tuesday and wind chills will be dangerous at times. Wind chill values in the 20 below to nearly 40 below zero range are expected.
A wind chill warning has been issued from 3 am Monday to noon Tuesday. Dangerously cold wind chills are expected during this time. The dangerously cold wind chills will cause frostbite in as little as 10 minutes to exposed skin. Expect wind chills to range from 25 below zero to 35 below zero.
A Wind Chill Warning means the combination of very cold air and the wind will create dangerously low wind chill values. Frost bite can occur quickly and even hypothermia or death if precautions are not taken.
A wind chill advisory will also be in effect from 3 am Monday to noon Tuesday. Wind chills within this advisory will range from 15 below zero to 30 below zero. Wind chills of this magnitude will cause frostbite in as little as 30 minutes to exposed skin.