RAP model 23z (5 PM CT) December 12, 2018
Split flow! Southern stream energy is stronger and helps spin up a strong area of low pressure over Texas on Thursday, this low heads E-NE thru the weekend. Weaker northern stream energy plows through the upper Midwest on Thursday bringing a brief burst of snow to parts of the Northland.
Air Quality Alert in effect for portions of central and southeast Minnesota until 6 PM CST Thursday, December 13 (Orange shaded area on map)
Note: More information can be found at this link https://www.pca.state.mn.us/featured/air-quality-alert-tuesday-december-11-through-thursday-december-13
18z NAM-Nest model 12-12-18
Simulated radar forecast valid from late tonight through early Thursday evening.
Watch the progression of an area of light snow as it moves east out of the eastern Dakotas Thursday morning. This snow won’t amount to much as it passes through the Northland during the day Thursday with snow lasting maybe an hour in any given location with snowfall amounts less than an inch.
Note: Timing of the snow (if we get any) here in Duluth looks to be roughly from about 12 PM to 2 PM Thursday.
Goes-16 water vapor satellite loop from Wednesday, December 12, 2018.
The next powerful storm is set to impact portions of the central/southern U.S. in the coming days bringing strong/damaging winds, rain and some snow to those areas.
Weather Synopsis for Northeast Minnesota and Northwest Wisconsin
The dark gloomy days of December roll on! Mild temps continued today with highs in the mid 20s to low 30s. Skies were generally overcast with areas of fog, light mist and haze.
RAP model analysis combined with Goes-16 water vapor satellite imagery from late this Wednesday afternoon shows a strong mid/upper level low moving over the southern Great Lakes. SW flow aloft covered the northern Plains out ahead of a trough which is digging S/E out of the northern Rockies.
Little burst of snow on the way for Thursday as a trough of low pressure passes through the area. Otherwise it looks generally dry through the weekend.
One of the bigger weather stories around here will be whether or not we can break up the inversion anytime soon. Temperatures aloft were right around -2C early this evening, but will warm to around +2C by Friday afternoon, and warming further to around +4 to +6C on Saturday. Temperatures closer to the surface will be cooler, so will have an inversion in place with warmer temps aloft, cooler air near the surface, and with the low sun angle at this time of year, it may be difficult for the low clouds to break through the weekend, unless we can get some stronger winds to develop to sort of mix up the atmosphere, and that is a possibility, but even if skies clear a bit, will likely still have hazy sky conditions, so either way there could be air quality issues at times through the weekend.
Lows tonight will be in the 20s, maybe some teens in a few spots. Highs Thursday in the upper 20s to lower 30s.
Highs Friday, Saturday and Sunday will mainly be in the 30s, but there is a chance for some 40s if skies can clear a bit.
Duluth, Minnesota Climate Normals for December 13
Sunrise Thursday: 7:46 AM CST
Sunset Thursday: 4:20 PM CST