With a deep snow pack in place, calm winds, clear skies, and arctic high pressure settling over head tonight, the stage is set for a record breaking cold night. In fact, the coldest air in the country will settle over eastern MN, WI, and down into central IL and IN tonight. We note latest forecast data suggesting some air temperatures tonight “not fit for man nor beast…” Both the RAP and HRRR forecast lows in the city to plummet to between 15 and 20 degrees below zero. Note the graphics below aren’t even extended until the 7-8 o’clock time period, or normally the coldest time of the morning when official lows typically take place.
While our official low isn’t forecast at 20 below zero, we do forecast an official low in the city at 12 degrees below zero and note many outlying areas may flirt with 15-20 degrees below zero by morning. Certainly, a brutal night is ahead with arctic high pressure settling in…
