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Updraft® - Minnesota Weather News
Sven Sundgaard

Cold snap: Teens Friday, subzero wind chills Saturday, 20s Sunday afternoon

Possible Thanksgiving system could bring rain and snow

fri chills 8a
Forecast wind chills midday Friday
National Oceanic and Atmospheric Administration, via Pivotal Weather

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Wind chills will remain in the single digits Friday in eastern Minnesota and subzero northwest. We’ll see snow showers develop Friday night with some light accumulation ahead of even colder air Saturday into Saturday night. Wind chills will stay subzero Saturday statewide.

The first of two cold blasts

Colder air has settled into Minnesota Friday. It’s just the first of two rounds of cold air for the weekend. Highs will only be in the teens Friday to near 20 in southern Minnesota.

fri highs 8a
Forecast high temperatures Friday
NOAA, via Pivotal Weather

Northwest winds at 10-20 mph will keep wind chills in the single digits and even below zero in northwest Minnesota even in the afternoon.

winds FRI
Forecast wind gusts and direction from 7 a.m. Friday through 4 p.m.
College of DuPage weather lab

The air is coming directly from the arctic regions of northwest Canada and northern Alaska. Current modeled trajectories of lower and mid-level air flow shows this well.

trajectories
Trajectories of air parcels from the Canadian arctic
National Weather Service

Lake effect snows and more snow showers

The focus for lake-effect snow showers has been the south shore of Lake Superior. Over two feet has fallen so far around Ironwood, Mich.

s shore snowfall
Snow totals along Lake Superior's south shore through early Friday
National Weather Service

A clipper diving out of Canada will bring more light snow to Minnesota, statewide overnight Friday night. Totals will be relatively light south but 1 to 2 inches is possible in parts of northern Minnesota.

24 hour snow 8a
Forecast snowfall Friday night
NOAA, via Pivotal Weather

Colder Saturday, warmer Sunday afternoon

High temperatures will again remain in the teens Saturday but with slightly higher wind speeds. This will make for wind chills mainly subzero through the day Saturday and causing some blowing and drifting of snow.

sat chills 8a
Forecast wind chills Saturday midday
NOAA, via Pivotal Weather

Our coldest temperatures will come early Sunday morning with lows in the single digits and even a few subzero readings.

sun lows 8a
Forecast low temperatures early Sunday
NOAA, via Pivotal Weather

We’ll warm up into the 20s by Sunday afternoon.

sun highs 8a
Forecast high temperatures Sunday
NOAA, via Pivotal Weather

Next week should bring several days above freezing but there’s also the possibility of a Thanksgiving system that could bring rain and snow. The models differ greatly on this system but it’s something to watch.