The coldest air in recent history is expected to move into the northern plains this weekend into early next week. The coldest air is expected on Sunday and Monday with sub-zero high temperatures and widespread overnight low temperatures of 15 to 25 below zero, with a few readings around 30 degrees below zero possible in the typical colder locations!
Although we have seen plenty of cold temperatures this winter, what will make this event extreme is the combination of strong winds and bitterly cold temperatures! Sustained northerly winds of 10-20 mph are expected with gusts 30+ mph possible. This will result in dangerously cold wind chill values ranging from 35 to 50 degrees below zero, especially on Sunday night and into the day on Monday. As you can see on the chart below, this combination of wind and temperature can lead to frostbite in as little as 5 or 10 minutes!
Below are graphics that depict the high and low temperatures on Sunday and Monday along with the coldest wind chill values:
High Temperature Sunday: 0F to –10F
Low Temperature Sunday Night: –15F to –25F
High Temperature Monday: 0F to –15F
Coldest Wind Chill Values Sunday Night: –40F to –55F
Coldest Wind Chill Values Monday: –40F to –50F