Up and down temperatures will be the norm around here through next week.
Will start with a brief shot of cold air for Sunday and Monday, this will be followed by much warmer temperatures Tuesday and Wednesday, but this will be followed by another quick shot of cold air for Thanksgiving Day and Friday, but there are signs showing up per model data for another warm up (possibly a big one) occurring next weekend ~November 27-30.
Quite a bit of wind will accompany these temperature changes over the next few days, and this will probably be one of the bigger weather stories around here for the next few days.
Winds will shift to the NW on Sunday with wind gusts of 30 to 40 mph possible in the Northland, and there’s even a chance for stronger wind gusts of >50 mph especially along the North Shore of Lake Superior.
Snow showers and flurries are likely at times across the Northland on Sunday. The main impact from these snow showers will be from briefly reduced visibilities.
Total snowfall accumulations will generally be under an inch on Sunday except for locations near the Ontario border where 1-2″ of snow is possible Sunday.
For Duluth and Superior — Snow showers associated with a cold front will affect the Twin Ports ~7 AM to 9 AM Sunday with lingering flurries and snow showers possible Sunday afternoon. Total snowfall accumulations <1″.
18z NAM 3km model simulated radar forecast valid from Midnight tonight to 6 AM Monday
Snow in blue colors
Here’s a look at the 850mb temperature forecast valid from Midnight tonight to Midnight Wednesday.
Strong cold air advection occurs on Sunday as 850mb temps bottom out at around -17C, and a cold air mass will linger over the Northland into Monday, but then will see strong warm air advection occur on Tuesday with 850mb temps climbing to around +12C.
Colder temperatures show up as darker blue and purple colors with warmer temps in green, yellow and orange colors on the animation below.
A look at the forecasted high temps for northeast Minnesota and northwest Wisconsin
Sunday 11/21: Upper 20s to middle 30s with slowly falling temps throughout the day.
Monday 11/22: 20s to around 30.
Tuesday 11/23: Upper 30s to middle 40s.
Wednesday 11/24: Lower 30s to middle 40s.
Thanksgiving Day 11/25: Upper teens and 20s.
Friday 11/26: 20s to lower 30s.
Note: Monday morning, and again late next week holds the best chance for lows in the single digits in the Northland, with even a shot at subzero temps in the typical cold spots.
A regional view of the forecasted high temperatures valid Sunday, November 21 through Friday, November 26, 2021.