/Issued 5:56 PM CST, Tuesday, December 19, 2017/
Here’s my snowfall accumulation map for this next event. More info below.
-Snow begins Wednesday between 4-6 PM
-Snow Wednesday night into Thursday morning
-Lingering light snow Thursday afternoon
-Greatest chance for some lake enhanced snow Wednesday night-Thursday morning
-Total snowfall accumulations up to 4 inches, but locally higher amounts possible due to possible lake enhancement
-Expect snow covered and slippery roads Wednesday night and Thursday. Reduced visibilities at times
20z HRRR model
Winter weather headlines map, these are in effect from Wednesday into Thursday morning. Note: Could see an advisory issued a little farther east to include parts of the Northland for Wednesday night-Thursday morning.
Snowfall Reports from December 18, 2017
International Falls, MN: 4.8 in
Loman, MN: 4.5 in
Cohasset, MN: 3.0 in
Payne, MN 3 E: 2.5 in
Ino, WI 6 WSW: 2.5 in
Island Lake, MN 6 E: 2.1 in
Grand Rapids, MN: 2.0 in
Lester Park, MN 1 ESE: 2.0 in
Duluth, MN (Airport) 1.7 in
Grand Marais, MN 4 W: 1.6 in
Ely, MN: 1.6 in
Chisholm, MN: 1.5 in
Cloquet, MN: 1.5 in
Cook, MN: 1.5 in
Gary New Duluth, MN 2 NNW: 1.5 in
Lutsen, MN 4 ENE: 1.3 in
Mahtowa, MN 3 N: 1.3 in
Wrenshall, MN: 1.3 in
Superior, WI: 1.0 in
*High temperature of 33 degrees at the Duluth Airport on December 18 was the first above freezing temperature since December 4.
*10 days with snow (At least 0.1″ accumulation) so far this month at Duluth, Minnesota. Average for December is 13 days.
*3 days so far this month with one inch or greater snowfall at Duluth, Minnesota. Average for December is 5 days.
*Peak wind gust of 46 mph at the Duluth Airport today, December 19.
Windy and colder temperatures have moved into the Northland today in wake of last night’s low pressure system which brought the snow that hit parts of the area.
Quite a bit of sunshine today south of Highway 2 while north of Highway 2 skies were cloudier, and there’s also been some flurries and snow showers up north today.
Highs occurred early this morning when temperatures were in the 20s and 30s – This afternoon temperatures have fallen into the mid teens to upper 20s with a few locations in the far south portion of the area still holding around 30 degrees.
Wind was the other big weather story today with west or northwest winds from 15 to 25 mph with gusts to 45 mph! A tight pressure gradient was in place over the upper Midwest today with a 992mb surface low over Quebec Province and a 1024mb high building into Saskatchewan Province — This coupled with the rather strong cold air advection that occurred today led to these gusty winds.
Tonight: Partly to mostly cloudy skies with much colder temperatures compared to last night. A few flurries early up north. Lows will range from the single digits and teens below zero in northern Minnesota to the single digits below/above zero in east central Minnesota and northwest Wisconsin. Note: Gusty west or northwest winds to 30 mph should diminish later in the evening.
Wednesday: Some sun possible especially before Noon otherwise increasing cloudiness. Snow is forecast to develop over western/southern areas in the afternoon with snow spreading farther east/northeast for Wednesday night. Highs will range from the lower teens to around 20 degrees with lows ranging from the single digits in far northern Minnesota to the lower 20s in eastern Minnesota and northwest Wisconsin.
Thursday: Light snow and flurries over most of the Northland with highs in the teens in northern Minnesota to the 20s in eastern Minnesota and northwest Wisconsin.
High pressure will be in control of our weather tonight and Wednesday morning, then will see an area of low pressure move out of the Rockies and into the southern-central Plains by Thursday. A trough will extend well north of that low, and it’s that feature combined with some warm air advection that will lead to our next round of snow that will impact most of the Northland from late Wednesday afternoon through Thursday morning. East/northeast winds could also lead to some lake effect snow along the North Shore and South Shore of Lake Superior especially Wednesday night and Thursday.
Note: Bitterly cold temperatures are still expected to arrive over the weekend with temperatures possibly remaining below zero for 2-4 days in a row next week. Daytime highs from December 24-28 are forecast to range from around 5 above to 10 below across the Northland with lows from 10 below to 30 below, possibly even a little colder in the typical cold spots. The European Ensemble computer model has temperatures staying below zero in Duluth for around 100 consecutive hours next week!
Forecast for Duluth and Superior
.Tonight… Mostly clear. Colder. Low 2 below to 3 above. Wind northwest at 10 to 20 mph with higher gusts this evening.
.Wednesday… Mostly sunny with increasing cloudiness through the day. High 12 to 15. Wind variable around 10 mph.
.Wednesday night… Snow developing during the evening. Snow overnight. Low 15 to 20. Wind east at 10 to 20 mph.
.Thursday… Light snow. Total snowfall accumulations around 4 inches. High 20 to 25. Wind north to northeast at 10 to 20 mph.
Normal temperatures for Wednesday
Sunrise Wednesday: 7:51 AM CST
Sunset Wednesday: 4:22 PM CST