Your face could freeze if you're outside too long today.
The wind chill factor will make it feel about 45 below zero this morning, Ryan Vipond, meteorologist with the National Weather Service Office in Aberdeen said. Frostbite can occur in about 10 minutes in these weather conditions, he said.
Today's high is expected to be 7 below zero, with wind speeds between 15 and 20 mph in Brown County, he said.
Wind speeds will decrease during the afternoon, so it will feel about 35 below zero, he said.
Winds will drop to 5 to 10 mph tonight and into Friday morning, but the temperature will drop to 23 below zero, so it will still feel about 40 below zero, Vipond said.
The best way to avoid problems is to stay indoors, but if you have to go outside, make sure every inch of exposed skin is bundled up, Vipond said. People should wear several layers of loose-fitting, lightweight clothing to trap body heat, he said.
The forecast is essentially the same in most counties including Campbell, McPherson, Walworth, Day, Spink, Campbell, Potter, Edmunds, Faulk and Dickey County in North Dakota, Vipond said.
A wind chill warning, which means winds will create dangerously cold conditions, is in effect today for all of those counties, according to the National Weather Service website.
Patchy, blowing snow is likely early this morning, he said.