Another round of accumulating snow on the way for Tuesday-Tuesday night

5 PM Monday, December 27, 2021

Our winter storm from last night and today will continue to wrap up this evening with a brief break in the snow expected overnight into early Tuesday, but this break won’t last long as will see another round of snow move NE across the Northland during the day Tuesday into early Wednesday morning, but snowfall amounts with this next system won’t be nearly as impressive compared to what some parts of the Northland saw with last night’s winter storm, but regardless we’re looking at back to back snow events which will continue to make for difficult travel conditions through Wednesday morning.

The storm track on Tuesday is farther south/east compared to today’s system, with low pressure digging SE out of eastern Wyoming, reaching northern Missouri and southeast Iowa by early Tuesday evening, then will see this low lift NE passing east of Marquette, MI by daybreak Wednesday. Although the low is tracking pretty far to the south to give the Northland snow, there will be an inverted type of trough that sets up across the upper Midwest and some moisture is likely to spread north meeting up with that trough while enough lift also occurs to generate some snow.

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TIMING OF TUESDAY’S SNOW

Snow is forecast to develop/spread into western and southern portions of the Northland after daybreak Tuesday with snow spreading into northeast Minnesota and northwest Wisconsin Tuesday afternoon. Snow ends from SW-NE from mid-evening Tuesday through early Wednesday morning.

For Duluth — Tuesday morning looks mainly dry. Snow is forecast to start Tuesday afternoon around Noon. Snow is forecast to end late Tuesday evening. Total snowfall accumulations of 2 to 3 inches are possible in Duluth by late Tuesday night. Wind shouldn’t be a big factor with this next round of snow on Tuesday so blowing snow shouldn’t be too much of an issue, but still cannot rule out some patchy blowing snow.

SNOWFALL FORECAST

Here’s my snowfall forecast for Tuesday through Tuesday night.

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All winter weather headlines in the Northland are set to expire at 6 PM this evening, but we may see additional winter weather headlines issued for some parts of our area for the system on Tuesday.

Today’s low-pressure system continues to churn ENE across northern Minnesota this afternoon and this low is clearly visible on satellite imagery today.

Goes-16 visible satellite imagery from Monday, December 27, 2021.

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It’s an active winter pattern for the upper Midwest with a cold/deep trough (blue) centered over the western U.S., while moisture (green) associated with a subtropical jet stream lifts NE out of the southwest U.S.

Goes-16 water vapor imagery from Monday, December 27, 2021.

A powerful jet stream of >160 knots extended from the Southern Rockies through the Midwest and Eastern Great Lakes today.

Our winter storm from last night and today continues to lift ENE across the Northland late today, while our next system heads east out of the Pacific northwest and into the Rockies this afternoon.

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BITTER BLAST POSSIBLE THIS WEEKEND

The European computer model (shown below) continues to be very aggressive in shoving some big-time cold southeastward into the Northland for Saturday and Sunday with daytime highs only in the single digits and teens below zero Saturday, with lows Saturday morning and Sunday morning in the teens and 20s below with some 30s below even possible in the typical cold spots.

Dangerously cold wind chills are possible as well this weekend with wind chill values of -30 to as cold as -50 degrees possible.

Tim

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