The first wave of extreme cold begins tonight, Wednesday, January 21, with wind chills as low as -35°F to -42°F, especially along the US/Canadian border, where an Extreme Cold Warning has been issued. For those closer to the north shore, a Cold Weather Advisory will go into effect at midnight through Thursday at 6 p.m. for windchills as low as -36°F. An Extreme Cold Watch has been issued beginning at Thursday, 6 p.m., until Saturday, 12 p.m. 

According to the NWS, the coldest weather is expected between Thursday evening and Saturday morning, specifically Friday and Saturday. Forecasters predict that Friday morning will produce the most dangerous wind chills, while Saturday morning will have the coldest actual air temperatures. There is a 5% to 10% chance that local cold spots in NE Minnesota could see actual air temperatures drop near -50°F on Saturday morning. 

According to the NWS, additional Cold Weather Advisories will likely be needed through Sunday morning.

The Associated Press reports that this "polar vortex" is part of a broader pattern of extreme winter weather that has caused major disruptions across the United States.

At these forecasted wind chill and actual temperatures, the NWS warns that frostbite can occur on exposed skin in 10 minutes or less. If you must go out, to stay safe, the NWS suggests dressing in at least three layers for "extreme cold," including a wicking inner layer, an insulating middle layer, and a wind-resistant outer shell. A warm hat, face masks, and waterproof boots should also be worn, as NWS meteorologists state that at least half of your body heat can be lost if your head is uncovered. 

Community members should be alert for warning signs of hypothermia, such as shivering, confusion, slurred speech, sleepiness, and stiff muscles. 

Additionally, officials recommend keeping gas tanks at least half-full and ensuring pets are protected from the elements. Cook County officials recommend keeping a winter car kit and a winter home kit stocked with essential supplies in case of power outages or if you get stranded.

Boreal Community Media will provide updates on the forecasted cold weather blast as they become available. We will also list any weather-related closures or delays here. If you know of any, send them to [email protected]. 

Related: Blasting heat at home and still freezing? There are easy fixes to save money and stay warm