Dense Fog Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
114 PM CDT Fri Oct 23 2026
LSZ140>143-240600-
/O.CON.KDLH.MF.Y.0039.000000T0000Z-261024T0600Z/
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-
114 PM CDT Fri Oct 23 2026
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 1 AM CDT SATURDAY...
* WHAT...Dense fog will reduce visibility to less than 1 NM.
* 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 1 AM CDT Saturday.
* IMPACTS...Low visibility will make navigation difficult.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Duluth MN
114 PM CDT Fri Oct 23 2026
LSZ144>147-150-240000-
/O.CON.KDLH.MF.Y.0039.000000T0000Z-261024T0000Z/
Two Harbors to Duluth MN-Duluth MN to Port Wing WI-
Port Wing to Sand Island WI-Sand Island to Bayfield WI-
Outer Apostle Islands Beyond 5 NM from Mainland-
114 PM CDT Fri Oct 23 2026
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 7 PM CDT THIS
EVENING...
* WHAT...Dense fog will reduce visibility to 1 to 2 NM.
* WHERE...Two Harbors to Duluth MN, Duluth MN to Port Wing WI,
Port Wing to Sand Island WI, Sand Island to Bayfield WI and
Outer Apostle Islands Beyond 5 NM from Mainland.
* WHEN...Until 7 PM CDT this evening.
* IMPACTS...Low visibility will make navigation difficult.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.
&&
$$
Small Craft Advisory
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
313 PM EDT Fri Oct 23 2026
LMZ221-240715-
/O.NEW.KMQT.SC.Y.0163.261024T1800Z-261025T0600Z/
Green Bay North of line from Cedar River MI to Rock Island
Passage-
313 PM EDT Fri Oct 23 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM SATURDAY TO 2 AM EDT
SUNDAY...
* WHAT...South winds 10 to 20 kt with gusts up to 30 kt and
waves 2 to 4 ft expected.
* WHERE...Green Bay North of line from Cedar River MI to Rock
Island Passage.
* WHEN...From 2 PM Saturday to 2 AM EDT Sunday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
313 PM EDT Fri Oct 23 2026
LMZ248-250-240715-
/O.CON.KMQT.MF.Y.0036.000000T0000Z-261023T2000Z/
/O.NEW.KMQT.SC.Y.0163.261024T1800Z-261025T0900Z/
Seul Choix Point to Point Detour MI-
5NM East of a line from Fairport MI to Rock Island Passage-
313 PM EDT Fri Oct 23 2026
...DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 4 PM EDT THIS
AFTERNOON...
...SMALL CRAFT ADVISORY IN EFFECT FROM 2 PM SATURDAY TO 5 AM EDT
SUNDAY...
* WHAT...For the Dense Fog Advisory, dense fog will reduce
visibility to less than one nautical mile. For the Small Craft
Advisory, south winds 15 to 20 kt with gusts up to 25 kt and
waves 3 to 5 ft expected.
* WHERE...Seul Choix Point to Point Detour MI and 5NM East of a
line from Fairport MI to Rock Island Passage.
* WHEN...For the Dense Fog Advisory, until 4 PM EDT this
afternoon. For the Small Craft Advisory, from 2 PM Saturday to
5 AM EDT Sunday.
* IMPACTS...Conditions will be hazardous to small craft. Low
visibility will make navigation difficult.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
If you must navigate, proceed with caution. Use proper fog
signals. Make sure all running lights are on. Remember to use
your radar and compass.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
313 PM EDT Fri Oct 23 2026
LSZ240-241-240715-
/O.NEW.KMQT.SC.Y.0163.261024T1200Z-261024T2000Z/
Saxon Harbor WI to Black River MI-Black River to Ontonagon MI-
313 PM EDT Fri Oct 23 2026 /213 PM CDT Fri Oct 23 2026/
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM EDT /7 AM CDT/ TO
4 PM EDT /3 PM CDT/ SATURDAY...
* WHAT...South winds around 15 kt with gusts up to 30 kt and
waves 1 to 2 ft expected.
* WHERE...Saxon Harbor WI to Black River MI and Black River to
Ontonagon MI.
* WHEN...From 8 AM EDT /7 AM CDT/ to 4 PM EDT /3 PM CDT/
Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
313 PM EDT Fri Oct 23 2026
LSZ242>244-240715-
/O.NEW.KMQT.SC.Y.0163.261024T1400Z-261024T2100Z/
Ontonagon to Upper Entrance of Portage Canal MI-
Upper Entrance of Portage Canal to Eagle River MI-
Eagle River to Manitou Island MI-
313 PM EDT Fri Oct 23 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 10 AM TO 5 PM EDT
SATURDAY...
* WHAT...South winds 15 to 20 kt with gusts up to 30 kt and
waves 1 to 3 ft expected.
* WHERE...Ontonagon to Upper Entrance of Portage Canal MI, Upper
Entrance of Portage Canal to Eagle River MI and Eagle River to
Manitou Island MI.
* WHEN...From 10 AM to 5 PM EDT Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
313 PM EDT Fri Oct 23 2026
LSZ245-246-240715-
/O.NEW.KMQT.SC.Y.0163.261024T1200Z-261025T0000Z/
Manitou Island to Point Isabelle MI-
Point Isabelle to Lower Entrance of Portage Canal MI-
313 PM EDT Fri Oct 23 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM TO 8 PM EDT
SATURDAY...
* WHAT...South winds 10 to 20 kt with gusts up to 30 kt and
waves 2 to 5 ft expected.
* WHERE...Manitou Island to Point Isabelle MI and Point Isabelle
to Lower Entrance of Portage Canal MI.
* WHEN...From 8 AM to 8 PM EDT Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
313 PM EDT Fri Oct 23 2026
LSZ247-248-240715-
/O.NEW.KMQT.SC.Y.0163.261024T1200Z-261025T0000Z/
Lower Entrance of Portage Canal To Huron Islands MI Including
Keweenaw and Huron Bays-Huron Islands to Marquette MI-
313 PM EDT Fri Oct 23 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM TO 8 PM EDT
SATURDAY...
* WHAT...South winds 10 to 20 kt with gusts up to 30 kt and
waves 1 to 3 ft expected.
* WHERE...Lower Entrance of Portage Canal To Huron Islands MI
Including Keweenaw and Huron Bays and Huron Islands to
Marquette MI.
* WHEN...From 8 AM to 8 PM EDT Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
313 PM EDT Fri Oct 23 2026
LSZ249-250-240715-
/O.NEW.KMQT.SC.Y.0163.261024T1200Z-261025T0300Z/
Marquette to Munising MI-Munising to Grand Marais MI-
313 PM EDT Fri Oct 23 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 8 AM TO 11 PM EDT
SATURDAY...
* WHAT...South winds 10 to 20 kt with gusts up to 30 kt and
waves 1 to 3 ft expected.
* WHERE...Marquette to Munising MI and Munising to Grand Marais
MI.
* WHEN...From 8 AM to 11 PM EDT Saturday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
URGENT - MARINE WEATHER MESSAGE
National Weather Service Marquette MI
313 PM EDT Fri Oct 23 2026
LSZ251-240715-
/O.NEW.KMQT.SC.Y.0163.261024T1500Z-261025T0600Z/
Grand Marais to Whitefish Point MI-
313 PM EDT Fri Oct 23 2026
...SMALL CRAFT ADVISORY IN EFFECT FROM 11 AM SATURDAY TO 2 AM EDT
SUNDAY...
* WHAT...South winds 15 to 20 kt with gusts up to 30 kt and
waves 1 to 3 ft expected.
* WHERE...Grand Marais to Whitefish Point MI.
* WHEN...From 11 AM Saturday to 2 AM EDT Sunday.
* IMPACTS...Conditions will be hazardous to small craft.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Inexperienced mariners, especially those operating smaller
vessels, should avoid navigating in hazardous conditions.
&&
$$
Hazardous Weather Outlook
Hazardous Weather Outlook
National Weather Service Milwaukee/Sullivan WI
141 PM CDT Fri Oct 23 2026
LMZ080-261-362-364-366-563-565-567-669-671-673-675-777-779-868-
870-872-874-876-878-241845-
Lake Michigan Michigan City IN to St. Joseph MI 5 NM offshore to
mid-line of lake.-
Lake Michigan from Seul Choix Point to Rock Island Passage 5NM
offshore to Mid Lake-
Lake Michigan South of a line from Seul Choix Point to the
Mackinac Bridge and North of a line from Charlevoix MI to South
Fox Island 5NM offshore-
Lake Michigan from Charlevoix to Point Betsie MI 5NM Offshore to
mid lake-
Lake Michigan from Point Betsie to Manistee MI 5NM offshore to
Mid Lake-
Lake Michigan from Rock Island Passage to Sturgeon Bay WI 5NM
offshore to mid lake-
Lake Michigan from Sturgeon Bay to Two Rivers WI 5NM offshore to
Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 5NM offshore to Mid
Lake-
Lake Michigan from Sheboygan to Port Washington WI 5NM offshore
to Mid Lake-
Lake Michigan from Port Washington to North Point Light WI 5NM
offshore to Mid Lake-
Lake Michigan from North Point Light to Wind Point WI 5NM
offshore to Mid Lake-
Lake Michigan from Wind Point WI to Winthrop Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Winthrop Harbor to Wilmette Harbor IL 5NM
offshore to Mid Lake-
Lake Michigan from Wilmette Harbor to Michigan City in 5NM
offshore to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5NM offshore to Mid
Lake-
Lake Michigan from Grand Haven to Whitehall MI 5NM offshore to
Mid Lake-
Lake Michigan from Holland to Grand Haven MI 5NM offshore to Mid
Lake-
Lake Michigan from South Haven to Holland MI 5NM offshore to Mid
lake-
Lake Michigan from St Joseph to South Haven MI 5NM offshore to
Mid Lake-
141 PM CDT Fri Oct 23 2026
This Hazardous Weather Outlook is for the open waters of Lake Michigan.
.DAY ONE...Tonight
Areas of dense fog will gradually lift this afternoon, with
additional dense fog development overnight tonight in the northern
two thirds of the Lake, primarily on the western side.
.DAYS TWO THROUGH SEVEN...Saturday through Friday
No hazardous weather is expected at this time.
$$
www.weather.gov/mkx
Hazardous Weather Outlook
National Weather Service Green Bay WI
100 PM CDT Fri Oct 23 2026
LMZ521-522-541>543-241800-
The Bay of Green Bay south of a line from Cedar River MI to Rock
Island Passage-Lake Michigan from Washington Island to Sheboygan-
100 PM CDT Fri Oct 23 2026
This Hazardous Weather Outlook is for portions of northwest Lake
Michigan and the waters of Green Bay.
.DAY ONE...This Afternoon and Tonight
Areas of dense fog will continue through this afternoon. A Marine
Dense Fog Advisory remains in effect until 3 PM for Lake Michigan
nearshore waters.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
Conditions hazardous to small craft will be possible Saturday through
Saturday night.
$$
Goodin
Hazardous Weather Outlook
National Weather Service Duluth MN
1025 AM CDT Fri Oct 23 2026
LSZ121-140>148-150-241530-
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-
1025 AM CDT Fri Oct 23 2026
This Hazardous Weather Outlook is for portions of Lake Superior
and the Nearshore waters of western Lake Superior.
.DAY ONE...Today and Tonight
Marine Dense Fog will continue to to bring visibilities of a mile
or less across western Lake Superior into tonight. Marine Dense
Fog Advisories remain in effect.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
Gusty south winds return Saturday morning. Small Craft Advisories
may be needed.
$$
BJH
More information may be obtained at the following web address:
http://www.weather.gov/duluth
Hazardous Weather Outlook
National Weather Service Duluth MN
1025 AM CDT Fri Oct 23 2026
MNZ010>012-018>021-025-026-033>038-WIZ001>004-006>009-241530-
Koochiching-North St. Louis-Northern Cook/Northern Lake-
North Itasca-Central St. Louis-Southern Lake/North Shore-
Southern Cook/North Shore-North Cass-South Itasca-South Cass-
Crow Wing-Northern Aitkin-South Aitkin-Carlton/South St. Louis-
Pine-Douglas-Bayfield-Ashland-Iron-Burnett-Washburn-Sawyer-Price-
1025 AM CDT Fri Oct 23 2026
This Hazardous Weather Outlook is for portions of northeast
Minnesota and northwest Wisconsin.
.DAY ONE...Today and Tonight
Areas of dense fog are impacting the Twin Ports, portions of the
North Shore, portions of the South Shore, and the St. Louis River
Valley. Fog is expected to erode by early afternoon. See the
latest Dense Fog Advisory for more details.
.DAYS TWO THROUGH SEVEN...Saturday through Thursday
A few non-severe thunderstorms are possible Saturday.
.SPOTTER INFORMATION STATEMENT...
Skywarn spotter activation will not be needed today or tonight.
$$
