/Issued 4:29 PM CST, Sunday, December 31, 2017/
With continued cold temperatures this week, ice coverage should continue to increase not only on Lake Superior but for the other Great Lakes as well which had ~15% ice coverage as of December 30.
12z European Computer Model from 12.31.2017, valid for Wednesday, January 10, 2018.
850mb temperature forecast.
Note: We’re looking at more very cold temperatures this week, although will likely climb above zero a few days this week, but overnight lows look to remain subzero through the end of the week. Daytime highs in the teens, maybe even the 20s are possible for the 2nd week of January but this could easily change in coming days.
Temperature departure map for the week of December 24, 2017.
Precipitation departure map for the week of December 24, 2017.
Temperature and Precipitation report for Duluth, Minnesota
December 24-30, 2017
High Temperatures/Departure from Normal
12/24: 16 F/-4 degrees below normal
12/25: -8 F/-28 degrees below normal
12/26: -8 F/-28 degrees below normal
12/27: -3 F/-23 degrees below normal
12/28: 1 F/-19 degrees below normal
12/29: -1 F/-20 degrees below normal
12/30: -7 F/-26 degrees below normal
Low Temperatures/Departure from Normal
12/24: -8 F/-12 degrees below normal
12/25: -18 F/-22 degrees below normal
12/26: -21 F/-25 degrees below normal
12/27: -23 F/-27 degrees below normal
12/28: -15 F/-18 degrees below normal
12/29: -13 F/-16 degrees below normal
12/30: -20 F/-23 degrees below normal
Note: Average temperature for the week of December 24, 2017 at Duluth, Minnesota: -9.1 degrees (-20.8 degrees below normal) Source: http://www.dnr.state.mn.us
Total Precipitation: 0.11 inches
Normal: 0.26 inches
Departure: -0.15 inches below normal
State Average for Minnesota for the week of December 24, 2017
Temperature: -3.3 degrees
Departure: -16.5 degrees below normal
Precipitation: 0.10 inches
Departure: -0.10 inches below normal
Note: A nice writeup by Mark Seeley on the weather events of 2017. Two part link below.
*8 subzero nights in a row (so far) at Duluth, Minnesota. 4 of the 8 nights had a low temperature of -20 degrees or colder.
*12 subzero nights in a row (so far) at International Falls, Minnesota. 8 of the 12 nights had a low temperature of -20 degrees or colder; 3 of the 12 nights -30 degrees or colder.
*Low temperature of -26 degrees at the Duluth Airport on Sunday morning, December 31, 2017 is the coldest temperature at the Duluth Airport since January 6, 2014 (-28 degrees)
*Top 5 lowest maximum temperature on record for December 30 at Duluth, International Falls, and Hibbing, while Brainerd had its lowest maximum temperature on record for December 30.
*Around 72 consecutive hours (so far) with a subzero temperature at the Duluth Airport. Temperature fell below zero late Thursday afternoon, December 28, remains below zero as of 4 PM, December 31.
January Climate Averages/Records for Duluth, Minnesota
Temperature: 10.2 degrees
Precipitation: 0.96 inches
Snowfall: 19.4 inches
Warmest January on record: 23.7 degrees set in 2006
Coldest January on record: -7.2 degrees set in 1912
Wettest January on record: 4.70 inches set in 1969
Driest January on record: 0.13 inches set in 2008
Snowiest January on record: 46.8 inches set in 1969
Least snowiest January on record: 2.0 inches set in 1921
Number of days with snowfall 0.1″ or greater accumulation: 13 days
Number of days with snowfall 1.0″ or greater accumulation: 5 days
Normal high on the 1st: 19 degrees
Normal high on the 31st: 20 degrees
Normal low on the 1st: 3 degrees
Normal low on the 31st: 2 degrees
Astronomical Data for January
Sunrise on the 1st: 7:54 AM CST
Sunrise on the 31st: 7:33 AM CST
Sunset on the 1st: 4:31 PM CST
Sunset on the 31st: 5:10 PM CST
Low temperature reports from Sunday morning, December 31, 2017
Embarrass, MN: -45 F
Bigfork, MN 2 NNE: -38 F
Effie, MN 7 E: -37 F
Kabetogama, MN: -37 F
Bigfork, MN: -36 F
Togo, MN: -36 F
Ely, MN: -35 F
Cass Lake, MN: -35 F
Longville, MN: -35 F
Crane Lake, MN: -35 F
Northome, MN: -34 F
Pine River, MN: -33 F
Walker, MN: -33 F
Orr, MN: -33 F
Brainerd, MN: -31 F
Isabella, MN 1 W: -31 F
International Falls, MN: -30 F
Grand Rapids, MN: -30 F
Aitkin, MN: -29 F
Proctor, MN 2 SW: -27 F
Bruno, MN 4 S: -27 F
Twig, MN 3 WNW: -27 F
Brule, WI 11 SSE: -27 F
Cloquet, MN: -27 F
Chisholm-Hibbing, MN: -27 F
Hayward, WI: -26 F
McGregor, MN: -26 F
Moose Lake, MN: -26 F
Duluth Airport: -26 F
Clam Lake, WI 3 W: -26 F
Grand Marais Airport: -26 F
Butternut, WI 3 N: -25 F
Oliver, WI 2 ENE: -25 F
Siren, WI: -24 F
Superior Airport: -23 F
Hinckley, MN: -22 F
Two Harbors, MN: -20 F
Silver Bay, MN: -20 F
Glidden, WI: -20 F
Ashland, WI: -19 F
Duluth Harbor: -18 F
Coldest wind chill reports from Sunday morning, December 31, 2017
Palmers, MN 2 WNW: -54 F
Silver Bay Marine: -49 F
Duluth Airport: -49 F
International Falls, MN: -48 F
Cloquet, MN: -47 F
Grand Rapids, MN: -47 F
Grand Marais Airport: -46 F
Two Harbors, MN: -45 F
Northome, MN: -44 F
Walker, MN: -43 F
Bay of Grand Marais: -43 F
Brainerd, MN: -43 F
Siren, WI: -41 F
Superior Airport: -40 F
Duluth Harbor: -37 F
Phillips, WI: -36 F
Hayward, WI: -34 F
The final day of 2017 was a cold one! Arctic airmass remains over the Northland, although temperatures aloft have ‘warmed’ up slightly with late afternoon 850mb temperatures around -22C this thanks to a little bit of warm air advection. Highs today were only in the single digits and teens below zero. Arctic high pressure ~1048mb covered the northern Plains which led to a lot of sunshine today over the majority of the area.
Bitterly cold temperatures will continue tonight under clear to partly cloudy skies. Lows will be in the teens, 20s and 30s below zero. Will warm up just a little bit on Monday with highs in the single digits below to single digits above zero, skies will vary between mostly sunny and partly sunny.
Our next opportunity for a dusting of snow looks to occur Tuesday afternoon or evening as a cold front moves southeast through the Northland, behind the front will be a reinforcing shot of arctic air.
Forecast for Duluth and Superior
Event: *Wind Chill Warning for Duluth*
Timing: Until 11 AM CST Monday
Event: *Wind Chill Advisory for Superior*
Timing: Until 11 AM CST Monday
.Tonight… Frigid. Mostly clear. Low 14 below to 19 below. Wind west to northwest at 5 to 15 mph with gusts to 20 mph. Wind chills 25 below to 45 below.
.New Year’s Day… Very cold. Partly cloudy. High 2 below to 3 above zero. Wind west at 10 to 20 mph. Morning wind chills 25 below to 45 below.
.Tuesday… Increasing cloudiness. Light snow possible later in the day. High 5 to 10 above. Wind southwest at 10 to 20 mph.
Normal temperatures for Monday
Sunrise Monday: 7:54 AM CST
Sunset Monday: 4:31 PM CST