Winter Weather Advisory
URGENT - WINTER WEATHER MESSAGE
National Weather Service Marquette MI
210 PM EST Mon Dec 1 2025
MIZ001-021000-
/O.NEW.KMQT.WW.Y.0034.251202T0000Z-251202T1500Z/
Keweenaw-
Including the cities of Copper Harbor
210 PM EST Mon Dec 1 2025
...WINTER WEATHER ADVISORY IN EFFECT FROM 7 PM THIS EVENING TO 10 AM
EST TUESDAY...
* WHAT...Lake effect snow expected. Total snow accumulations up to 5
inches, heaviest totals north and west of US-41. Moderate to heavy
snowfall rates of 0.5 to 1 inch per hour possible.
* WHERE...Keweenaw County.
* WHEN...From 7 PM this evening to 10 AM EST Tuesday.
* IMPACTS...Plan on slippery road conditions. Moderate to heavy
snowfall rates at times may reduce visibility down to quarter
mile. The hazardous conditions could impact the Tuesday morning
commute.
* ADDITIONAL DETAILS...Shifts in the lake effect snow band location
will drastically affect snowfall totals. If positioned just
offshore to the north, accumulations will be limited to around 1
to 2 inches. A more southerly position could yield amounts between
6 to 12 inches.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Slow down and use caution while traveling.
&&
$$
77
Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
358 PM EST Mon Dec 1 2025
LSZ242-020900-
/O.EXT.KMQT.SC.Y.0189.000000T0000Z-251202T0900Z/
Ontonagon to Upper Entrance of Portage Canal MI-
358 PM EST Mon Dec 1 2025
...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 4 AM EST TUESDAY...
* WHAT...Southwest winds 15 to 20 kt with gusts up to 30 kt and
waves 3 to 6 ft occurring.
* WHERE...Ontonagon to Upper Entrance of Portage Canal MI.
* WHEN...Until 4 AM EST Tuesday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
1245 PM CST Mon Dec 1 2025
LSZ140>143-020300-
/O.CON.KDLH.SC.Y.0131.000000T0000Z-251202T0300Z/
Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-
1245 PM CST Mon Dec 1 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...
* WHAT...West winds 10 to 20 kt with gusts up to 25 kt and waves
1 to 4 ft.
* WHERE...Grand Portage to Grand Marais MN, Grand Marais to
Taconite Harbor MN, Taconite Harbor to Silver Bay Harbor MN
and Silver Bay Harbor to Two Harbors MN.
* WHEN...Until 9 PM CST this evening.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
1245 PM CST Mon Dec 1 2025
LSZ146>148-150-020300-
/O.CON.KDLH.SC.Y.0131.000000T0000Z-251202T0300Z/
Port Wing to Sand Island WI-Sand Island to Bayfield WI-
Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
1245 PM CST Mon Dec 1 2025
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM CST THIS
EVENING...
* WHAT...Southwest winds 10 to 20 kt with gusts up to 25 kt and
waves 1 to 4 ft.
* WHERE...Port Wing to Sand Island WI, Sand Island to Bayfield
WI, Oak Point to Saxon Harbor WI and Outer Apostle Islands
Beyond 5 NM from Mainland.
* WHEN...Until 9 PM CST this evening.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Anyone operating a smaller vessel should avoid navigating in
hazardous conditions.
&&
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Green Bay WI
252 PM CST Mon Dec 1 2025
WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-022100-
Vilas-Oneida-Forest-Florence-Northern Marinette County-Lincoln-
Langlade-Menominee-Northern Oconto County-Door-Marathon-Shawano-
Wood-Portage-Waupaca-Outagamie-Brown-Kewaunee-Waushara-Winnebago-
Calumet-Manitowoc-Southern Marinette County-
Southern Oconto County-
252 PM CST Mon Dec 1 2025
This Hazardous Weather Outlook is for north-central and northeast
Wisconsin.
.DAY ONE...Tonight
Light snow may result in slippery stretches on area roads on
late this afternoon and evening.
.DAYS TWO THROUGH SEVEN...Tuesday through Monday
Light snow may also result in slippery roads on late Tuesday
night into Wednesday.
Hazardous wind chills of 10 below to 20 below zero are forecast
for late Wednesday night into Thursday morning.
.SPOTTER INFORMATION STATEMENT...
Spotters are requested to report snowfall measurements to the
National Weather Service in Green Bay.
$$
Hazardous Weather Outlook
National Weather Service Marquette MI
351 PM EST Mon Dec 1 2025
LSZ162-240>251-263>267-022100-
Lake Superior west of a line from Saxon Harbor WI to Grand
Portage MN beyond 5NM-Saxon Harbor WI to Black River MI-
Black River to Ontonagon MI-
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
Manitou Island to Point Isabelle MI-
Point Isabelle to Lower Entrance of Portage Canal MI-
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-Huron Islands to Marquette MI-
Marquette to Munising MI-Munising to Grand Marais MI-
Grand Marais to Whitefish Point MI-
Lake Superior from Saxon Harbor WI to Upper Entrance to Portage
Canal MI 5NM off shore to the US/Canadian border including Isle
Royale National Park-
Lake Superior from Upper Entrance to Portage Canal to Manitou
Island MI 5NM off shore to the US/Canadian Border-
Lake Superior West of Line from Manitou Island to Marquette MI
Beyond 5NM from shore-
Lake Superior East of a line from Manitou Island to Marquette MI
and West of a line from Grand Marais MI to the US/Canadian Border
Beyond 5NM from shore-
Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off
shore to the US/Canadian border-
351 PM EST Mon Dec 1 2025 /251 PM CST Mon Dec 1 2025/
This Hazardous Weather Outlook is for portions of Central Lake
Superior...Eastern Lake Superior and Western Lake Superior.
.DAY ONE...Tonight
Visibilities below 1 mile are expected beneath moderate to heavy
lake effect snow bands, primarily over the north central and
western waters.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday
Northwesterly gales are possible (40-60%) Wednesday and Wednesday
night behind a Clipper low. Moderate to heavy freezing spray is
also possible over the central and eastern lake Wednesday through
Thursday. See the Open Lake Forecast for additional details.
.SPOTTER INFORMATION STATEMENT...
The need for weather spotter reports is not anticipated at this
time.
$$
Hazardous Weather Outlook
National Weather Service Marquette MI
351 PM EST Mon Dec 1 2025
MIZ001-022100-
Keweenaw-
351 PM EST Mon Dec 1 2025
This Hazardous Weather Outlook is for portions of western Upper
Michigan.
.DAY ONE...Tonight
Moderate to possibly heavy lake effect snowfall tonight into
Tuesday morning, focused north and west of US-41. Uncertainty
remains high in the exact placement of the dominant band with a
high boom/bust scenario. See the Winter Weather Message for more
information.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday
No hazardous weather is expected at this time.
.SPOTTER INFORMATION STATEMENT...
Spotters are encouraged to submit snowfall reports to the National
Weather Service via phone, on our website, or through social
media.
$$
Hazardous Weather Outlook
National Weather Service Duluth MN
207 PM CST Mon Dec 1 2025
LSZ121-140>148-150-022015-
Bayfield to Oak Point WI-Grand Portage to Grand Marais MN-
Grand Marais to Taconite Harbor MN-
Taconite Harbor to Silver Bay Harbor MN-
Silver Bay Harbor to Two Harbors MN-Two Harbors to Duluth MN-
Duluth MN to Port Wing WI-Port Wing to Sand Island WI-
Sand Island to Bayfield WI-Oak Point to Saxon Harbor WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
207 PM CST Mon Dec 1 2025
This Hazardous Weather Outlook is for portions of Lake Superior
and the Nearshore waters of western Lake Superior.
.DAY ONE...This afternoon and Tonight
Southwesterly winds gusting to 20 to 25 knots and waves to 2 to 5
feet continuing through early this evening will lead to hazardous
conditions for small craft along the North and South Shores.
Small Craft Advisories are in effect.
.DAYS TWO THROUGH SEVEN...Tuesday through Sunday
A couple periods of southwest to northwest winds with gusts of 20
to 30 knots late Tuesday afternoon through Thursday night may
lead to another period of hazardous conditions for small craft.
There is a 10 to 30 percent chance for gales Wednesday into
Thursday night.
$$
JDS
More information may be obtained at the following web address:
http://www.weather.gov/duluth
