The wind chills will cause frostbite in as little as 30 minutes to exposed skin.
Temperatures will continue to cool off Friday, with afternoon readings near zero in northern areas to around 10 degrees in southern areas.
MONDAY NIGHT: A wintry mix to snow is possible, with an overnight low temperature of 30 degrees.
A Wind Chill Warning means there is the potential for a combination of very cold air and wind to create dangerously low wind chill values.
Another day of dangerously cold temperatures for Saturday.
In addition, 6 to 10 inches of lake effect snow could fall through Sunday, the weather service said. "I have to make the decision on whether or not to close schools based on weather conditions and what is in the best interest of children's well-being". It will remain blustery, with winds gusting to 25 miles per hour at times.
FRIDAY NIGHT THROUGH SATURDAY MORNINGThe risk for lake effect snow continues through this time-frame, but will become more localized to the northern snow belt. Unfortunately, the sun won't do much for our temperatures. Wind chills as low as -10° are possible through the day. As the system moves in, temperatures at the surface may still be cold enough for a bit of snow, but the temperatures will gradually will climb to the mid 30s allowing for a changeover of some sleet or light rain showers. Saturday will stay frigid, with mostly sunny skies and a high temperature of 20 degrees.
We will start the day cold but will finally begin seeing improvements through the day. The overnight will consist of an increase of cloud cover and another night of below average temperatures.