Sunday, December 11, 2016

Heavy snow in Duluth and along the North Shore tapers off before midnight (Snow totals 4-9") Winter Storm Warning and Advisory remain in effect until midnight; More light snow Monday afternoon/evening, arctic air to follow

/Issued 7:30 PM CST, Sunday, December 11, 2016/


Forecast surface map valid for Friday morning, December 16th.  Snow is possible later this week, most likely from Friday into Saturday morning based on latest model projections...Several inches of snow could accumulate somewhere across the Upper Midwest later this week.  Stay tuned.


Radar loop ending at 7:30 PM CST.  Source:

Tonight's low temperature forecast.  Source:

Monday's high temperature forecast.  Source:

Temperature departure map for the week of December 4th.  Source:

A colder finish to last week but prior to that temperatures were still well above average earlier in the week.

Precipitation departure map for the week of December 4th.  Source:

Near to above average precipitation totals last week across the Northland.

Preliminary snowfall reports for December 11, 2016

Totals listed below are through around 6 PM this evening.

Hermantown, MN 3 NE:  6.3" (National Weather Service total thru 6 PM)

Duluth, MN 2 NW:  4.9"
Superior, WI 2 NW:  4.0"
Lutsen, MN 4 ENE:  4.0"
Two Harbors, MN 1 SSE:  4.0"
Butternut, WI 2 E:  3.8"
Park Falls, WI 1 W:  3.2"

Willow River, MN:  3.0"
Cornucopia, WI:  2.5"
Gile, WI:  2.5"
Pine River, MN 7 WSW:  2.3"
Deerwood, MN:  2.0"

Payne, MN 3 E:  2.0"
Herbster, WI 4 S:  1.8"
Motley, MN 1 NW:  1.5"
Brainerd, MN 3 N:  1.5"

Low temperature reports for December 11, 2016

Ash Lake, MN 5 NW:  -26 F
Orr, MN 3 E:  -23 F
Togo, MN:  -21 F
Littlefork, MN:  -19 F
Orr, MN:  -18 F

Embarrass, MN:  -18 F
Cook, MN:  -17 F
International Falls, MN:  -16 F
Bigfork, MN:  -15 F
Isabella, MN 14 W:  -15 F

Ely, MN:  -15 F
Babbitt, MN:  -14 F
Hibbing, MN 5 E:  -12 F
Duluth, MN (National Weather Service)  -2 F

Temperature and precipitation report for Duluth, Minnesota (Airport location)

December 4-10, 2016

High temperatures:

12/4:  33 F/+7 degrees above normal
12/5:  35 F/+9 degrees above normal
12/6:  36 F/+11 degrees above normal
12/7:  20 F/-5 degrees below normal
12/8:  23 F/-1 degree below normal
12/9:  13 F/-11 degrees below normal
12/10:  7 F/-17 degrees below normal

Low temperatures:

12/4:  26 F/+14 degrees above normal
12/5:  30 F/+18 degrees above normal
12/6:  20 F/+9 degrees above normal
12/7:  15 F/+4 degrees above normal
12/8:  12 F/+2 degrees above normal
12/9:  4 F/-6 degrees below normal
12/10:  0 F/-9 degrees below normal

Total precipitation:  0.45"
Normal:  0.45"
Departure:  +0.15" above normal

Weather Tidbits for Duluth, Minnesota

*High temperature of 7℉ on December 10, 2016 was the coldest high temperature since January 18, 2016.

*Low temperature of 0℉ on December 10, 2016 was the coldest low temperature since March 1, 2016.

*Today is the 13th consecutive day with at least a trace of snow - In this streak there's been 4 one inch or greater snowfall events.

Weather Summary for northeast Minnesota and northwest Wisconsin

There was a potent disturbance with up to 90 meter 12-hour 500mb height falls moving across Minnesota today with low pressure tracking E/NE out of eastern Iowa.  Light snow affected much of the Northland today with snowfall amounts ranging from a dusting to around 2.5" but heavier snow has been occurring along the North Shore of Lake Superior especially from the north side of Duluth and on up the shore thanks to an east wind coming off the lake and plenty of cold air moving over the lake.  Snowfall totals of 3-4"+ have been reported through 3 PM today along the North Shore of Lake Superior.

High temperatures today ranged from the upper single digits to around 20 degrees with even some mid 20s showing up late this afternoon around the head of Lake Superior.  Winds today were out of the north or east at 5 to 15 mph.

Forecast Discussion for northeast Minnesota and northwest Wisconsin

.Short Term Forecast...

Tonight (December 11)

Low pressure and upper level disturbance will exit off to the east tonight with light snow and flurries coming to an end before midnight.  Note:  The setup that has been in place to produce heavier lake enhanced snow along the North Shore of Lake Superior today will continue into the early/mid evening hours before breaking down before midnight.  An additional 1-4" of snow is possible this evening along the North Shore.  Low temperatures tonight will be single digits below to single digits above zero but teens below are possible in western-northern portions of the area.  Winds will becoming north or west at 5 to 15 mph.

Monday (December 12)

An arctic front will sweep southeast through the Northland on Monday.  Will likely get some light snow with generally 1" or less of accumulation as this boundary moves through.  Highs will be in the single digits and teens with lows in the single digits and teens below zero.  Winds will be out of the west or southwest at 10 to 20 mph.

.Extended Forecast...

Tuesday and Wednesday (December 13-14)

Very cold as arctic air moves over the Upper Midwest.  Outside of a few flurries from time to time the Tuesday-Wednesday time frame is looking fairly dry.  High temperatures are forecast to be in the single digits below to single digits above zero with lows Tuesday night in the single digits and teens below zero.

Note:  Wind chills in the 15 below to 35 below range are possible across the Northland Tuesday and Wednesday - Wind chill headlines may be needed.

Forecast for Duluth and Superior

Event:  *Winter Weather Advisory*
Timing:  Until Midnight CST tonight

.Tonight...  Snow gradually ending by midnight.  Total event snowfall accumulation ranging from 4 to 9".  Low 0 to 5.  Wind becoming northwest at 5 to 15 mph.

.Monday...  Some morning sun possible then mostly cloudy.  Light snow developing later in the day. Total snowfall accumulation less than 1".   High 9 to 14.  Wind southwest at 10 to 20 mph.

Normal temperatures for Monday

High:  23
Low:    8

Sunrise Monday:  7:45 AM CST
Sunset Monday:   4:20 PM CST