12/31/09: Thursday’s Weather Report

Issued at 4:52 PM CST, Thursday, December 31st, 2009

Weather History:

On this date last year the low temperature at the Duluth Airport was -16 degrees.

Headlines issued by the National Weather Service Duluth, MN.

…Lake effect snow update…

Gile WI (Iron County) 7.0″ of snow since This Morning.

*Lake Effect Snow Warning* continues until 6 AM CST Saturday for Ashland and Iron Counties in Northwest Wisconsin. Some cities included in the warning are: Ashland WI…Odanah WI…Marengo WI…Mellen WI…Hurley WI…Upson WI…Gile WI…Iron Belt WI…And Montreal WI…

Persistent north to northwest wind blowing across Lake Superior combined with arctic air moving south out of Central Canada will continue to produce heavy lake effect snow showers in the warning area through at least Saturday Morning. Hourly snowfall rates of 1-2″ are possible at times through Saturday Morning with snowfall totals of 12-24″ with locally higher amounts possible from Tonight through early Saturday. The heaviest snow is expected to fall across Iron County in Northwest Wisconsin, near the towns of Hurley…Montreal…Gile…And Upson.

A check of the Iron Belt webcam late This Afternoon shows that snow was falling at a good clip with large fluffy snowflakes visible on the webcam and rather low visibility.

Travel along Highway 2…13…and 77 in the warning area will be very difficult due to the falling snow. Visibilities could drop to less than one quarter mile at times through Saturday Morning. Roads will be snow covered and slippery. Use extreme caution if you will be doing any traveling along the South Shore of Lake Superior in Northwest Wisconsin. Make sure to have a winter survival kit in your vehicle.

Note: The Counties of Bayfield and Douglas in Northwest Wisconsin could also see periods of lake effect snow showers at times especially from Friday into Sunday, several inches of snow could accumulate…Especially near the towns of Brule…Port Wing…Bayfield…Washburn…Iron River…And Moquah… A lake snow advisory and or lake snow warning may be needed for parts of Bayfield and Douglas County at some point over the next few days.

…Updated January 2010 outlook, issued by the Climate Prediction Center on December 31st, 2009…

For Duluth:

Equal Chances for Above Normal, Below Normal, or Normal Temperatures.

33% chance for Below Normal Precipitation.

Weather Headlines:

-Bitter cold arctic air arrives by Friday and may linger through next week.

-Very heavy lake effect snow event underway along the South Shore of Lake Superior in Northwest Wisconsin.

Forecast Discussion for Northeast Minnesota and Northwest Wisconsin

(Today’s Weather)

Arctic high pressure of 1038 mb was centered in Southeast Alberta Province Canada late This Afternoon. Shots of cold advection have been pushing south/east through the Upper Midwest Today with 850 mb temperatures around Northern Minnesota and Northwest Wisconsin ranging from -17 to -19 degrees C as of 4 PM while an area of -20 to -28 degree C H85 temps were lurking across parts of the Northern Plains into Southwestern Canada. High temperatures Today were in the single digits and teens across our area with late day wind chills generally ranging from 5 above to around 10 below zero.

Today’s Upper Level Analysis

W/NW 500 mb flow was in place across the Upper Midwest Today per RUC model analysis with an area of 120 knot upper level winds centered over the Northern Rockies and Southwest Canada. A cold upper level trough was digging south out of Central Canada This Afternoon per water vapor satellite imagery with an area of -38 to -40 degree C H5 temperatures noted across Central Canada late Today near this 500 mb trough.

(Tonight through Friday Night)

Arctic air (coldest of the season so far) will continue to plunge south/southeast into the Upper Midwest during this period with high pressure to our west/northwest with a surface trough developing across the Northern Great Lakes. Low temperatures Tonight will be in the single digits below to above zero with some teens below mainly in Western areas. Highs Friday will range from around 10 below to 10 above with lows Friday Night dropping into the teens, 20s, and 30s below zero across all of our area with the traditional cold spots having the best shot at dropping lower than 25 below! North or northwest winds will prevail during this period generally under 20 mph. Wind chills at times will range from 5 below to 25 below Tonight and most of Friday and will range from 25 below to around 50 below zero by Friday Night. Wind chill headlines may be needed for parts of our area, especially for Friday Night.

Expect clear-partly cloudy skies across our area during this period with the possibility for some snow flurries Tonight and Friday.

(Extended Forecast)

The main weather story for the Upper Midwest during the extended period will be the persistent cold air which will be in place this weekend through all of next week as a stubborn north or northwest flow continues across the Upper Midwest.

The coldest weather is expected to occur this weekend with another very cold shot of air possible sometime the middle or end of next week. The latest forecast models Today bring down a 1055 mb arctic high out of Saskatchewan Province later next week which could lead to an even colder airmass across the Northern Plains and Upper Midwest during that time compared to what will see through this weekend.

This type of weather pattern is a dry one for our local area with just the South Shore of Lake Superior in Northwest Wisconsin continuing to see bouts of locally heavy lake effect snow showers at times right into next week.

It’s possible for several feet of snow to have accumulated by this time next week across parts of Ashland and especially Iron County in Northwest Wisconsin.

5 Day Forecast for Duluth/Superior

.Tonight… Partly cloudy. Flurries possible late. Low 1 below to 6 below. Wind northwest at 10 to 15 mph. Wind chills of 15 below to 25 below.

.New Years Day… Partly cloudy. Flurries possible early. High zero to 5 above. Wind northwest at 10 to 20 mph. Wind chills approaching 20 below.

.Friday Night… Bitterly cold. Mostly clear. Low 18 below to 23 below. Wind northwest at 5 to 15 mph. Dangerous wind chills approaching 35 below to 40 below.

.Saturday… Very cold. Partly sunny. High zero to 5 below.

.Saturday Night… Partly cloudy. Bitterly cold. Low 15 below to 20 below.

.Sunday… Partly cloudy. High 2 to 7.

.Sunday Night… Partly cloudy. Low 7 below to 12 below.

.Monday… Partly cloudy. High 5 to 10.

Normal High Temperature Tomorrow 18 degrees

Normal Low Temperature Tomorrow 0 degrees

Tim

12/30/09: Wednesday’s Weather Report

Issued at 8:36 PM CST, Wednesday, December 30th, 2009

Weather History:

On this date in 1996… 10.3″ of snow fell at Duluth, Minnesota.

Weather headlines:

-Big lake effect snow event develops Thursday and persists into early next week for the South Shore of Lake Superior in Northwest Wisconsin

-Arctic air sets up across the Upper Midwest by Friday and persists thru early next week

-Wind chill headlines may be needed at times across parts of our area beginning Thursday Night

Forecast Discussion for Northeast Minnesota and Northwest Wisconsin

(Today’s Weather)

A cold front combined with an upper level disturbance tracking through the Upper Midwest caused some light snow and flurries across portions of Northern Minnesota and Northwest Wisconsin. Snow accumulations Today were generally 1″ or less. Highs Today were in the teens to lower 20s with 850 mb temperatures as of 8 PM ranging from -10 to -17 degrees C from northwest to southeast across our local area. Winds Today were out of the south, west, or northwest under 20 mph. Surface map early This Evening featured low pressure of 1006 mb centered in Central Ontario Province with a cold front attached to the low extending southwest through Central Wisconsin. High pressure of 1024 mb was centered in Southern Alberta Province.

(This Evening’s Upper Level Analysis)

Westerly 500 mb flow was in place across the Upper Midwest This Evening per RUC model analysis. Water vapor satellite imagery shows two upper level disturbances. One was lifting east/northeast out of Missouri while another one was heading east across Northwest Minnesota/Southwest Ontario Province. An area of 60 meter 12 hour 500 mb height falls covered most of the Upper Midwest and Central/Northern Great Lakes This Evening in association with the weak disturbances overhead.

…An extended period of lake effect snow expected along the South Shore of Lake Superior…

*LAKE EFFECT SNOW WARNING*

Valid 4 PM CST Thursday until 6 AM CST Saturday for Ashland and Iron Counties in Northwest Wisconsin. This includes the cities of Ashland WI…Marengo WI…High Bridge WI…Mellen WI…Hurley WI…Upson WI…And Montreal WI… Arctic high pressure to our northwest and low pressure off to our east will cause north winds and arctic air air to cross the relatively milder waters of Lake Superior, this will lead to the development of locally heavy lake effect snow showers in the affected areas from Thursday Afternoon through at least early Saturday. Snowfall rates of 1-2″ an hour are possible at times with snowfall accumulations of 1-2 feet expected in most of the warning area between late Thursday and early Saturday.

Travel along Highway 13…77…and 2 in Northwest Wisconsin will become very difficult if not impossible at times due to the snow. Use extreme caution and make sure to have a winter survival kit in your vehicle if you will be doing any traveling in the warning area.

(Tonight through Thursday Night)

Low pressure will be centered to our east while arctic high pressure strengthens to our northwest. A surface trough will develop to our north Tonight and will drift south into our area Tomorrow and Tomorrow Night. Partly-mostly cloudy skies will cover our area during this period with a few flurries possible from time to time. Lows Tonight will be in the single digits and teens but some locales could drop into the zero to 5 below range, mainly in Western areas. Highs Tomorrow will be in the single digits and teens with lows Tomorrow Night in the single digits below to above zero with some minus teens possible in Western areas. Winds during this period will be out of the north or west around 20 mph or less. Wind chills will drop into the 10 below to around 25 below zero range across portions of our area, especially by Tomorrow Night.

(Extended Forecast)

Weather pattern will change little through early next week. Strong arctic high pressure will be draped over the Upper Midwest into Central Canada while low pressure shifts west/northwest through New England toward Eastern Canada from this weekend into early next week. An amplified N/NW 500 mb flow will be in place across our area from Friday into early next week and this will result in arctic air taking up residence across the Upper Midwest.

High temperatures Friday and Saturday will be in the 10 below to 10 above range with lows Friday Night and Saturday Night in the single digits, teens, and 20s below with some 30s below possible in the traditional cold spots.

The overall weather pattern is a dry one for most of our area through early next week with just an occasional flurry from time to time.

There has been some hints over the last few days of milder Pacific air developing across the Northern Rockies and spilling east into the Upper Midwest toward the middle part of January while the bitter cold arctic air reforms across Alaska and Northwestern Canada. Whether this happens or not remains to be seen since this would be out in the 2 week time frame and models tend to flip flop from one day to the next with weather patterns after 4 or 5 days. It’s also going to be interesting to see if the current snow pack, which consists of about 60% of the U.S. having at least 1″ of snow on the ground would play any role in preventing any big temperature rises as we head through January.

5 Day Forecast for Duluth/Superior

.Tonight… Variable cloudiness with flurries possible at times. Low 3 to 8. Wind northwest at 10 to 15 mph.

.New Years Eve… Partly sunny. Flurries possible. High 8 to 13. Wind northwest at 10 to 15 mph.

.Thursday Night… Variable cloudiness. Low 2 below to 7 below. Wind northwest at 10 to 15 mph. Wind chills approaching 25 below.

.New Years Day… Partly cloudy. High zero to 5 above.

.Friday Night… Partly cloudy. Low 12 below to 17 below.

.Saturday… Partly sunny. High zero to 5 below.

.Saturday Night… Partly cloudy. Low 11 below to 16 below.

.Sunday… Partly to mostly cloudy. Flurries possible. High 2 to 7.

Normal High Temperature Tomorrow 18 degrees

Normal Low Temperature Tomorrow 0 degrees

Tim

12/29/09: Tuesday’s Weather Report

Issued at 8:28 PM CST, Tuesday, December 29th, 2009

Weather History:

On this date in 1999… A record high temperature of 46 degrees occurred at Duluth, Minnesota.

Here are some low temperatures from Northern Minnesota and Northwest Wisconsin from earlier Today, Tuesday, December 29th, 2009. Source: NWS Duluth, Minnesota.

International Falls MN: -22 degrees

Brainerd MN: -13 degrees

Hibbing MN: -13 degrees

Ely MN: -17 degrees

Orr MN: -18 degrees

Crane Lake MN: -20 degrees

Cook MN: -18 degrees

Bigfork MN: -18 degrees

Longville MN: -15 degrees

Pine River MN: -15 degrees

Moose Lake MN: -13 degrees

Hayward WI: -15 degrees

Bruno MN: -14 degrees

Embarrass MN: -22 degrees

3 miles East of Orr MN: -22 degrees

Littlefork MN: -18 degrees

Northome MN: -19 degrees

4 miles West of Clam Lake WI: -15 degrees

Upson WI: -11 degrees

Note: The official low at the Duluth Airport This Morning was -8 degrees. Superior Wisconsin had a low temperature of -2 degrees.

Forecast Discussion for Northeast Minnesota and Northwest Wisconsin

(Today’s Weather)

High pressure of 1032 mb has moved into Central Ohio This Evening with a southerly flow of warm advection well underway across the Upper Midwest This Evening. High temperatures across our area were mainly in the teens Today with 850 mb temperatures as of 8 PM ranging from -3 to -7 degrees C. Partly to mostly sunny skies covered our area Today with winds turning into the south under 20 mph.

(This Evening’s Upper Level Analysis)

A fairly vigorous shortwave trough associated with 90-120 meter 12 hour 500 mb height falls was heading E/NE through the Plains This Evening. Upper level flow has become less amplified Today with a W/SW 500 mb flow in place in the Upper Midwest This Evening.

(Tonight)

Warm advection and an increasing low level jet to around 40 knots from the SW will keep low temperatures from falling much at all across our local area Tonight. Low pressure of 1012 mb currently in Central Manitoba Province with a cold front extending southwest of this low will keep southerly winds going across our area through the night as low temperatures hold steady in the single digits and teens, in fact a few locales in Western areas may see a slight rise in temperatures toward 20 degrees by dawn. Partly to mostly cloudy skies are forecast Tonight with the possibility for a few lake effect flurries in the Arrowhead of Minnesota. Winds Tonight will be from the south under 20 mph.

(Wednesday and Wednesday Night)

The upper level disturbance in the Plains This Evening will continue on it’s north/east track during this period while an area of low pressure passes by to our north. A cold front attached to that low will be passing through our local area during this period. Mostly cloudy skies are forecast Tomorrow and Tomorrow Night with snow showers and flurries at times. Best chance for up to 1″ or so of accumulation will be found along and south-east of a line from around Aitkin and Duluth and across all of Northwest Wisconsin. The best chance for seeing a little steadier snow would be during the Afternoon/early Evening hours on Wednesday the way it looks now. Highs Tomorrow will be in the teens and 20s with lows Tomorrow Night in the single digits and teens. South or west winds will become more northwesterly under 20 mph.

(Extended Forecast)

Arctic air will move back into the Upper Midwest later this week and through most of the weekend with the coldest period expected to occur from Friday into Saturday. The South Shore of Lake Superior may have to deal with some bouts of lake effect snow showers from Friday through Sunday with favorable N/NW winds and bitter cold temperatures in place, otherwise the remainder of our area will be fairly dry, although a few flurries can’t be ruled out at times especially on Thursday and perhaps later this weekend.

High temperatures on Thursday will be in the single digits, teens, to around 20 degrees with lows Thursday Night in the single digits below to above zero with a few locations possibly going down toward 10 below zero especially around International Falls and in far Western parts of our area. Highs on Friday will range from around 10 below to 10 above zero across our area with lows Friday Night in the single digits, teens, and 20s below with some of the traditional cold spots likely dropping into the minus 30s!

Right now it does not appear that winds will be very strong during the Friday/Saturday time period, but with temperatures well below zero it won’t take much of a wind to create dangerous wind chills around our area.

5 Day Forecast for Duluth/Superior

.Tonight… Mostly clear with increasing cloudiness Overnight. Low 5 to 10. Wind south at 5 to 15 mph.

.Wednesday… Mostly cloudy. Snow showers or flurries developing during the Afternoon. High 18 to 23. Wind southwest at 5 to 15 mph. Chance of snow 50%.

.Wednesday Night… Mostly cloudy. Snow showers or flurries possible mainly early. Snow accumulations under 1″. Low 5 to 10. Wind northwest at 10 to 15 mph. Chance of snow 40%.

.New Years Eve… Mostly cloudy. Flurries possible. High 10 to 15.

.Thursday Night… Variable cloudiness. Flurries possible. Low zero to 5 below.

.New Years Day… Partly cloudy. High zero to 5 above.

.Friday Night… Partly cloudy. Low 12 below to 17 below.

.Saturday… Partly sunny. High 1 below to 6 below.

Normal High Temperature Tomorrow 18 degrees

Normal Low Temperature Tomorrow 0 degrees

Tim

12/28/09: Monday’s Weather Report

Issued at 3:46 PM CST, Monday, December 28th, 2009

-December 2009 Weather stats for Duluth, Minnesota. (Airport location)

Thru the 27th: Average monthly temperature 13.1 degrees
Departure: -1.5 degrees

Snowfall total thru the 27th: 32.5″
Departure: 19.7″ above normal

Precipitation total thru the 27th: 2.87″
Departure: 2.05″ above normal

Weather headlines:

…Big story this week will be the two arctic air surges. One overhead Tonight, a bigger one due later this week…

Forecast Discussion for Northeast Minnesota and Northwest Wisconsin

(Today’s Weather)

An arctic front moved out of our area early This Morning, gusty winds and falling temperatures occurred as this boundary moved through. High temperatures Today occurred just after Midnight last night when teens and 20s were common, then during the day Today temperatures dropped into the single digits and teens for most areas. 850 mb temperatures as of 3 PM ranged from -13 to -17 degrees C across Northern Minnesota and Northwest Wisconsin. There’s been some lake effect snow showers that have affected portions of the South Shore of Lake Superior in Northwest Wisconsin Today, but snowfall totals have generally been on the light side, and as a result the Lake Effect Snow Advisory has been cancelled for Iron County. Winds Today were out of the north or west at 10-25 mph with some higher gusts especially This Morning. Late Afternoon wind chills were mainly in the 10 above to 10 below range across our local area. Surface map as of 3 PM featured arctic high pressure of 1032 mb centered in far Southeast Saskatchewan Province.

(Today’s Upper Level Analysis)

Northwest 500 mb flow was in place across the Upper Midwest Today with an upper level trough in place from Central Canada south to the Northern Great Lakes. 500 mb temps underneath this trough ranged from -32 to -38 degrees C. Upper level winds have strengthened to 120 knots Today across the Upper Midwest per RUC model and this core of stronger winds aloft is helping to drive colder air south into our area.

(Tonight)

Arctic high pressure will drop southeast through the Northern Plains Tonight with cold advection continuing most of the night to the east of this high. Clear-partly cloudy skies will cover our local area Tonight with low temperatures dropping into the single digits below to above zero with some teens to around 20 degree below zero readings expected for some locations. Winds Tonight will be out of the north or west under 20 mph. Wind chills Tonight will range from 10 below to around 25 below zero.

(Tuesday and Tuesday Night)

High pressure will shift to the south/east of our area during this period. Some warm advection will gradually move into the Upper Midwest as this high moves away. Mostly sunny to partly cloudy skies can be expected on Tuesday with partly to mostly cloudy skies for Tuesday Night. Highs Tomorrow will be in the single digits and teens with lows Tomorrow Night holding fairly steady from the daytime highs. Winds during this period will be out of the south or west under 20 mph.

Note: There could be some lake effect snow showers that develop by Tuesday Night along the North Shore of Lake Superior, mainly from Tofte northeast through Grand Marais and Grand Portage as southerly winds combined with 850 mb temps around -10 degrees C could help in generating some lake snow Tomorrow Night, this shouldn’t be a very big deal though as warm advection will be underway by Tomorrow Night which should keep any lake effect snow fairly light.

(Extended Forecast)

Low pressure and a cold front will be passing east through our area on Wednesday. This system could bring some flurries or a few snow showers to our area, but nothing significant is expected at this time. Warmest day of the week should occur on Wednesday when high temps will be in the teens and 20s. Lows Wednesday Night will be in the single digits to low teens.

A secondary cold front will drop south across the Upper Midwest on Thursday with arctic air blasting into our area behind this boundary as an upper level jet over the Northern Rockies builds to 130 knots helping to drive an even colder airmass south into our area later this week. The coldest period looks to be from Thursday Night into Saturday… High temperatures on Thursday will be in the single digits and teens with lows Thursday Night in the single digits and teens below zero for most areas.

High temps for Friday will struggle to get much above zero which will set the stage for a bitterly cold Friday Night as low temps will likely drop into the teens, 20s, and even some 30s below zero across Northern Minnesota and Northwest Wisconsin.

Right now it doesn’t appear will have much wind around later this week, but it will not take much of a wind to get wind chills down into advisory, possibly even warning criteria later this week given how low the temperatures will be by Friday Night.

5 Day Forecast for Duluth/Superior

.Tonight… Mostly clear. Cold. Low 6 below to 11 below. Wind northwest at 5 to 15 mph with gusts to 20 mph. Wind chills approaching 25 below.

.Tuesday… Mostly sunny. High 12 to 17. Wind southwest at 10 to 15 mph.

.Tuesday Night… Becoming mostly cloudy. Low 5 to 10.

.Wednesday… Flurries possible. Considerable cloudiness. High 17 to 22.

.Wednesday Night… Mostly cloudy. Flurries possible. Low 5 to 10.

.New Years Eve… Mostly cloudy. Flurries possible. High 10 to 15.

.Thursday Night… Variable cloudiness. Flurries possible. Low 3 below to 8 below.

.New Years Day… Partly cloudy. High zero to 5 above.

Normal High Temperature Today 19 degrees

Normal Low Temperature Today 1 degree

Tim

12/27/09: Sunday’s Weather Report

Issued at 5:04 PM CST, Sunday, December 27th, 2009

Weather History:

On this date in 2003… A record high temperature of 40 degrees occurred at Duluth, Minnesota.

Here are a few snowfall reports from around Northern Minnesota and Northwest Wisconsin from last night and Today. Source: NWS Duluth, Minnesota.

5 miles North of Pillager MN (Cass County) 3.0″

Odanah WI (Ashland County) 8.0″

Mellen WI (Ashland County) 8.0″

Gile WI (Iron County) 1.3″

Hayward WI (Sawyer County) 1.5″

Forecast Discussion for Northeast Minnesota and Northwest Wisconsin

(Today’s Weather)

Strong low pressure which was over Western Iowa on Friday, weakened and moved toward Southeast Iowa on Saturday, and now Today this low has weakened further and had moved well off to our east, however, this storm system was so wrapped up and had lots of energy to work with that it has formed weak frontal boundaries which have been passing through our local area since Saturday. Convergence near those boundaries have led to the development of some snow across parts of our area. Last night one of these snow bands formed over parts of Northwest Wisconsin and led to several inches of accumulation…Mainly over Ashland County. Today, another area of snow mixed with freezing drizzle passed south/east across Northern and Northeast Minnesota with generally light amounts of snow reported. High temperatures Today ended up warmer than expected as one last shot of warm advection was advecting south/east out of Central Canada. High temperatures Today were in the 20s and 30s across our area with 850 mb temperatures as of 4 PM ranging from -1 to -7 degrees C with the mildest air continuing in Northern areas of Minnesota. Very odd indeed. Winds Today were out of the west or northwest at 10 to around 25 mph.

(Today’s Upper Level Analysis)

500 mb low (528 meters) continued to shift into the Eastern Great Lakes Today while an upper level trough was in place from Central Canada through the Northern Plains and Upper Midwest per RUC model analysis and water vapor satellite imagery.

(Tonight)

A cold front will be dropping south out of Central Canada and will pass through most of our area by dawn. Partly-mostly cloudy skies are expected across our area Tonight with the possibility for some snow showers or flurries at times along with some patchy light freezing drizzle, especially This Evening. Lows Tonight will gradually settle into the single digits and teens with winds out of the north or west at 10-25 mph, but we could see a few gusts up near 30 mph late Tonight as strong cold advection sinks south out of Central Canada while a low level jet increases to 30-45 knots late Tonight.

(Monday and Monday Night)

High pressure currently over Western Canada will head southeast through the Northern Plains and Upper Midwest during this period. Colder temperatures are expected across our area Tomorrow and Tomorrow Night with northwest or north winds in place ahead of this high. Partly-mostly sunny skies are forecast on Monday with clear to partly cloudy skies for Monday Night. Highs Tomorrow will be in the teens and 20s which will occur after Midnight Tonight, then temps on Monday will be slowly falling. Lows Tomorrow Night will be in the single digits below to above zero with some minus teens also possible. Winds Tomorrow and Tomorrow Night will be out of the north or west at 10-25 mph, the stronger winds will occur on Monday.

Note: *Lake Snow Advisory* is in effect for Iron County in Northwest Wisconsin from 9 PM CST Tonight until 6 PM CST Monday. 4-6″ of snow could accumulate in that area, this would include the cities of…Hurley WI…Montreal WI…And Upson WI…

(Extended Forecast)

Moderating temperatures will return to our area for Tuesday and Wednesday as high pressure exits to our south/east while a weak area of low pressure approaches from the west. A cold front attached to that low will be passing through the Upper Midwest sometime Wednesday or Thursday. A more significant shot of arctic air looks like it could set-up around our area later this week or next weekend behind this cold frontal passage, this will be something to monitor in coming days.

Note: GFS model for the second day in a row continues to bring some bitter cold air south into our area late this week or next weekend with Overnight lows dropping into the teens, 20s, and maybe even some 30s below zero for parts of our area.

No big snow systems are expected through next weekend the way it looks now, but some periodic bouts of heavier lake effect snow could affect parts of the South Shore of Lake Superior in Northwest Wisconsin early this week and perhaps sometime later in the week.

5 Day Forecast for Duluth/Superior

.Tonight… Partly to mostly cloudy. Flurries possible at times through the night with patchy light freezing drizzle possible early. Low 10 to 15. Wind northwest at 10 to 20 mph.

.Monday… Partly sunny. High 17 to 22 with slowly falling temperatures. Wind northwest at 15 to 25 mph.

.Monday Night… Mostly clear. Low 2 below to 7 below. Wind northwest at 10 to 20 mph. Wind chills from 15 below to 25 below.

.Tuesday… Partly cloudy. High 15 to 20.

.Tuesday Night… Mostly cloudy. Flurries possible. Low 5 to 10.

.Wednesday… Mostly cloudy. Flurries possible. High 17 to 22.

.Wednesday Night… Mostly cloudy. Flurries possible. Low 5 to 10.

.Thursday… Mostly cloudy. Flurries possible. High 10 to 15.

Normal High Temperature Tomorrow 19 degrees

Normal Low Temperature Tomorrow 1 degree

Tim