Some rain lingers into Thursday; Turning colder Halloween through most of next week with a few snow showers possible

Rainfall Reports from Wednesday, October 27, 2021

Source: https://mesowest.utah.edu/

Totals listed below are thru 4 PM Wednesday.

Minong, WI: 0.47″
McGregor, MN: 0.40″
Duluth Sky Harbor Airport: 0.38″
Superior Airport: 0.26″
Solon Springs, WI: 0.23″
Cass Lake, MN: 0.21″
Duluth Airport: 0.19″
Two Harbors, MN: 0.12″
Pine River, MN: 0.12″
Grand Rapids, MN: 0.11″
Chisholm-Hibbing Airport: 0.08″
Barnes, WI: 0.07″
Siren, WI: 0.07″
Saginaw, MN: 0.06″
Hayward, WI: 0.04″
Bigfork, MN: 0.04″
International Falls, MN: 0.04″
Littlefork, MN: 0.03″
Aitkin, MN: 0.02″
Cloquet, MN: 0.02″
Moose Lake, MN: 0.01″
Brainerd, MN: 0.01″

We saw a few areas of more persistent rain showers in the Northland today, but the main area of rain tonight should focus more across north-central areas of Minnesota (black outlined area on map), while rain will be lighter and more scattered farther east.

MRMS radar loop ending 4:50 PM Wednesday, October 27, 2021.

A widespread area of rain covering the eastern Dakotas and western Minnesota late this afternoon, with scattered showers farther east. Movement of all this rain is to the NNE.

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A slow moving trough of low pressure stretching from the Northern Plains to the Gulf Coast late this afternoon will continue to advance slowly eastward through Thursday. Moisture streaming northward from the Gulf combined with some lift with the trough will continue to produce areas of rain in northeast Minnesota and northwest Wisconsin tonight and Thursday, but the highest rainfall totals will remain over western portions of the Northland, west of the Twin Ports for the remainder of this event.

Goes-16 water vapor loop from Wednesday, October 27, 2021.

Light to moderate rain will continue in the Northland tonight and Thursday, but most of this rain will remain west of the Arrowhead and most of northwest Wisconsin.

The rain is expected to diminish during the day Thursday as the amount of lift decreases over the area.

18z NAM 3km model simulated radar forecast thru 7 AM Friday.

Additional rainfall thru Thursday evening.

A steady stream of clouds lifting S-N across the region today.

Another overcast day is likely on Thursday, but some sun may return on Friday.

Goes-16 visible satellite loop from Wednesday, October 27, 2021.

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Long range computer models continue to show a pattern change occurring next week which will bring some chilly air southward into the U.S. including for us in the Northland.

You can see the progression of this colder air mass in this 850mb temperature forecast valid from 7 AM Saturday to 1 AM Sunday. Colder temperatures show up as blue and purple colors.

Both the Euro Ensemble and GEFS models show below normal temperatures for northeast Minnesota and northwest Wisconsin for next week.

How cold? There’s a good chance will have at least a few days next week with highs in the 30s to around 40 in the Northland, with overnight lows in the teens and 20s.

There is also a possibility will see the lake effect snow machine crank up next week downwind of Lake Superior and Lake Michigan, and possibly over some of the larger inland lakes across northern Minnesota.

Tim

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