Wintry mix into Friday

Freezing fog and mist, light snow favor northern Minnesota.

There’s finally some action on our very quiet December weather maps.

A low-pressure system tracking across Canada drags a cold front across Minnesota Friday. Some patchy overnight fog and mist give way to a wintry mix of ice and snow favoring northern Minnesota Friday. Flurries and drizzle may reach as far south as the Twin Cities and southern Minnesota Friday.

NOAA’s NAM 3 km resolution model paints the precipitation zones Friday.

NOAA NAM 3 km model Friday
NOAA NAM 3 km model Friday
NOAA via tropical tidbits

Light accumulations up north

Snowfall accumulations look generally light Friday across northern Minnesota. Most areas that pick up now will get between 1 and 3 inches. Parts of southern Minnesota may get a light dusting.

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Here’s NOAA’s GFS model snowfall output.

NOAA GFS model snowfall output Friday
NOAA GFS model snowfall output Friday
NOAA via pivotal weather

Big changes Christmas week

Christmas week starts mild. Highs in the 40s look likely Monday, and possibly Tuesday across southern Minnesota.

Forecast high temperatures Monday
Forecast high temperatures Monday
NOAA

Tuesday-Wednesday snow chance?

Most forecast models are still driving a weather system across Minnesota next Tuesday or Wednesday. That could bring snow before Christmas to parts of Minnesota that currently lack snow cover.

Here’s the European model for late Tuesday night.

European model forecast for midnight Wednesday December 23
European model forecast for midnight Wednesday, December 23
ECMWF via pivotal weather

Christmas polar plunge

The upper air pattern appears ready to buckle and send a shot of Arctic air south across Minnesota by Christmas eve.

Upper air forecast map for 6 pm December 24
Upper air forecast map for 6 p.m. Dec. 24.
NOAA

Early temperature guidance suggests minus 20s are possible in northern Minnesota and the first subzero lows of the season in the Twin Cities.

NOAA GFS temperature forecast for 6 am Thursday, December 24
NOAA GFS temperature forecast for 6 a.m. Dec. 24.
NOAA via pivotal weather

Stay tuned.