Plowable snow and -15 degrees next week?

Forecast models zeroing in in Arctic outbreak next week

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A frigid day on Lake Superior.
Lake Superior Maritime Museum.

Get ready Minnesota.

Next week looks like the coldest week so far in this (meteorological) winter season. The combination of Monday snow followed by a run of subzero temperatures will make for a significant winter weather challenge next week.

First, we enjoy a fairly mild weekend. It should be a good weekend for those who want to get out and enjoy our ample early December snow cover.

Temperature forecast for Twin Cities
Temperature forecast for Twin Cities
NOAA via Weather Bell

Here’s my latest thinking on how the forecast models are handling events next week.

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Monday snow

All indications still point to accumulating snow Monday across much of Minnesota.

It’s still too early to be precise storm track and accumulations, but it looks like travel and rush hours will be significantly impacted Monday. The Canadian model is typical of solutions that bring snow to Minnesota Monday.

Canadian model Monday
Canadian model Monday
Environment Canada via tropical tidbits

Right now most models favor the heaviest snow near the Twin Cities surrounding the midday hours. But models are often too fast with systems a few days out. So stay tuned on timing.

Arctic outbreak

The season’s coldest air mass so far blows in behind Monday’s clipper. The upper air trajectory next week blows straight from the Arctic Circle into Minnesota.

NOAA upper air forecast map for 6 pm December 10
NOAA upper air forecast map for 6 pm December 10
NOAA via Weather Bell

The range of forecast solutions favors Arctic air from Tuesday until at least Friday. We could string together 3-4 subzero mornings next week. And early indications are temperatures may struggle to reach the zero mark Tuesday and Wednesday afternoons.

It appears the coldest core of next week’s Arctic air mass will pass over Minnesota Wednesday morning. The European model is in the middle range between the GFS and Canadian models fro minimum temperatures Wednesday morning. The Euro cranks out a brisk minus 17 for the Twin Cities and minus 22 for St. Cloud Wednesday morning.

European model (ECMWF) temperature forecast for 6 am Wednesday December 11
uropean model (ECMWF) temperature forecast for 6 am Wednesday December 11
ECMWF via pivotal weather

At this point, a range of temperatures between 10 and 20 below zero looks likely for most of Minnesota next Wednesday morning.

Enjoy our relatively mild weekend, and stay warm next week Minnesota.