680 

FZUS53 KMQT 240901

NSHMQT



Nearshore Marine Forecast

National Weather Service Marquette MI

501 AM EDT Mon Aug 24 2026



For waters within five nautical miles of shore



Waves are the significant wave height - the average of the

highest 1/3 of the wave spectrum. Occasional wave height is the

average of the highest 1/10 of the wave spectrum.



LMZ221-242000-

Green Bay North of line from Cedar River MI to Rock Island

Passage-

501 AM EDT Mon Aug 24 2026



.EARLY THIS MORNING...Northwest wind 10 to 15 knots. Clear. Waves

1 to 2 feet. 

.TODAY...Northwest wind 10 to 15 knots veering north less than

10 knots late. Sunny. Waves 1 to 2 feet. 

.TONIGHT...Northeast wind less than 10 knots through midnight

becoming variable. Partly cloudy. Waves calm to 1 foot. 

.TUESDAY...South wind less than 10 knots increasing to 10 to

20 knots in the afternoon. Partly cloudy. Waves building to 2 to

3 feet. 

.TUESDAY NIGHT...South wind 15 to 20 knots with gusts up to

30 knots. Showers likely and a slight chance of thunderstorms in

the evening, then showers and a chance of thunderstorms after

midnight. Waves building to 2 to 4 feet, then subsiding to 2 to

3 feet. 



$$



LMZ250-242000-

5NM East of a line from Fairport MI to Rock Island Passage-

501 AM EDT Mon Aug 24 2026



.EARLY THIS MORNING...Northwest wind 10 to 15 knots. Clear. Waves

1 to 2 feet. 

.TODAY...Northwest wind 10 to 15 knots veering north less than

10 knots late. Sunny. Waves 1 to 2 feet. 

.TONIGHT...North wind less than 10 knots through midnight

becoming variable. Partly cloudy. Waves calm to 1 foot. 

.TUESDAY...South wind 10 to 20 knots. Partly cloudy. Waves

building to 2 to 3 feet. 

.TUESDAY NIGHT...South wind 15 to 20 knots with gusts up to

30 knots. Mostly cloudy. A chance of showers and a slight chance

of thunderstorms in the evening, then showers likely and a chance

of thunderstorms after midnight. Waves building to 3 to 5 feet

occasionally to 7 feet. 



$$



LMZ248-242000-

Seul Choix Point to Point Detour MI-

501 AM EDT Mon Aug 24 2026



...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT THIS MORNING...



.EARLY THIS MORNING...Northwest wind 15 to 20 knots. Clear. Waves

1 to 2 feet. 

.TODAY...Northwest wind 10 to 15 knots with gusts up to 23 knots.

Sunny. Waves 1 to 2 feet. 

.TONIGHT...North wind less than 10 knots. Partly cloudy through

midnight then becoming mostly cloudy. Patchy fog late. Waves calm

to 1 foot. 

.TUESDAY...South wind 10 to 20 knots. Partly cloudy. Waves

building to 2 to 3 feet. 

.TUESDAY NIGHT...South wind 15 to 20 knots with gusts up to

27 knots. Mostly cloudy. A chance of showers and a slight chance

of thunderstorms in the evening, then showers and a chance of

thunderstorms after midnight. Waves building to 3 to 6 feet

occasionally to 8 feet. 



$$



LSZ240-241-242000-

Saxon Harbor WI to Black River MI-

Black River to Ontonagon MI-

501 AM EDT Mon Aug 24 2026 /401 AM CDT Mon Aug 24 2026/



.EARLY THIS MORNING...Variable wind less than 10 knots. Mostly

clear. Waves calm to 1 foot. 

.TODAY...Variable wind less than 10 knots. Mostly sunny. Waves

calm to 1 foot. 

.TONIGHT...Variable wind less than 10 knots becoming south less

than 10 knots by midnight. Partly cloudy through late evening

then becoming mostly cloudy. Waves calm to 1 foot. 

.TUESDAY...South wind less than 10 knots with gusts up to

18 knots. Partly cloudy. A slight chance of showers in the

morning, then a chance of showers and thunderstorms in the

afternoon. Waves calm to 1 foot. 

.TUESDAY NIGHT...South wind less than 10 knots veering southwest

10 to 15 knots after midnight. Mostly cloudy with showers and a

chance of thunderstorms in the evening, then partly cloudy with a

chance of showers after midnight. Waves building to 1 to 2 feet. 



$$



LSZ242-243-242000-

Ontonagon to Upper Entrance of Portage Canal MI-

Upper Entrance of Portage Canal to Eagle River MI-

501 AM EDT Mon Aug 24 2026



.EARLY THIS MORNING...Northwest wind less than 10 knots. Clear.

Waves calm to 1 foot. 

.TODAY...North wind less than 10 knots through early afternoon

becoming variable. Mostly sunny. Waves calm to 1 foot. 

.TONIGHT...Variable wind less than 10 knots becoming south less

than 10 knots late. Mostly cloudy. Waves calm to 1 foot. 

.TUESDAY...South wind less than 10 knots. Partly cloudy. A slight

chance of showers in the morning, then a chance of showers and

thunderstorms in the afternoon. Waves calm to 1 foot. 

.TUESDAY NIGHT...South wind 10 to 15 knots veering southwest

after midnight. Gusts up to 22 knots. Mostly cloudy. Showers and

a chance of thunderstorms in the evening, then a chance of

showers and a slight chance of thunderstorms after midnight.

Waves building to 1 to 2 feet. 



$$



LSZ244-245-242000-

Eagle River to Manitou Island MI-

Manitou Island to Point Isabelle MI-

501 AM EDT Mon Aug 24 2026



.EARLY THIS MORNING...Northwest wind 10 to 15 knots. Clear. Waves

1 to 2 feet. 

.TODAY...Northwest wind 10 to 15 knots backing west less than

10 knots late. Sunny. Waves 1 to 2 feet. 

.TONIGHT...Variable wind less than 10 knots. Mostly cloudy. Waves

calm to 1 foot. 

.TUESDAY...South wind less than 10 knots backing southeast 10 to

15 knots in the afternoon. Partly cloudy. A slight chance of

showers and thunderstorms in the afternoon. Waves building to

1 to 2 feet. 

.TUESDAY NIGHT...South wind 10 to 15 knots veering southwest

after midnight. Showers and a chance of thunderstorms in the

evening, then showers likely and a slight chance of thunderstorms

after midnight. Waves building to 2 to 3 feet, then subsiding to

1 to 2 feet. 



$$



LSZ246-242000-

Point Isabelle to Lower Entrance of Portage Canal MI-

501 AM EDT Mon Aug 24 2026



.EARLY THIS MORNING...Northwest wind less than 10 knots with

gusts up to 17 knots. Clear. Waves calm to 1 foot. 

.TODAY...Northwest wind less than 10 knots with gusts up to

17 knots. Mostly sunny. Waves calm to 1 foot. 

.TONIGHT...Variable wind less than 10 knots. Mostly cloudy. Waves

calm to 1 foot. 

.TUESDAY...South wind less than 10 knots backing southeast in the

afternoon. Gusts up to 17 knots. Partly cloudy. A slight chance

of showers in the morning, then a chance of showers and a slight

chance of thunderstorms in the afternoon. Waves building to 1 to

2 feet. 

.TUESDAY NIGHT...South wind 10 to 15 knots veering southwest

after midnight. Gusts up to 23 knots. Showers and a chance of

thunderstorms in the evening, then a chance of showers and a

slight chance of thunderstorms after midnight. Waves 1 to 2 feet.



$$



LSZ247-242000-

Lower Entrance of Portage Canal To Huron Islands MI Including

Keweenaw and Huron Bays-

501 AM EDT Mon Aug 24 2026



.EARLY THIS MORNING...Northwest wind less than 10 knots with

gusts up to 17 knots. Clear. Waves calm to 1 foot. 

.TODAY...Northwest wind less than 10 knots through early

afternoon becoming variable. Gusts up to 17 knots. Mostly sunny.

Waves calm to 1 foot. 

.TONIGHT...Variable wind less than 10 knots. Mostly cloudy then

becoming partly cloudy by midnight then becoming mostly cloudy.

Waves calm to 1 foot. 

.TUESDAY...South wind less than 10 knots. Partly cloudy. A slight

chance of showers in the morning, then a chance of showers and a

slight chance of thunderstorms in the afternoon. Waves calm to

1 foot. 

.TUESDAY NIGHT...South wind 10 to 15 knots veering southwest

after midnight. Gusts up to 24 knots. Mostly cloudy. Showers and

a chance of thunderstorms in the evening, then a chance of

showers and a slight chance of thunderstorms after midnight.

Waves building to 1 to 2 feet. 



$$



LSZ248-242000-

Huron Islands to Marquette MI-

501 AM EDT Mon Aug 24 2026



...SMALL CRAFT ADVISORY IN EFFECT UNTIL 2 PM EDT THIS AFTERNOON...



.EARLY THIS MORNING...Northwest wind 10 to 15 knots with gusts up

to 23 knots. Clear. Waves 2 to 4 feet. 

.TODAY...Northwest wind 10 to 20 knots. Sunny. Waves subsiding to

1 to 2 feet. 

.TONIGHT...Variable wind less than 10 knots becoming southwest

less than 10 knots late. Mostly cloudy then becoming partly

cloudy by midnight then becoming mostly cloudy. Waves 1 to

2 feet. 

.TUESDAY...South wind 5 to 15 knots. Partly cloudy. A chance of

showers and a slight chance of thunderstorms in the afternoon.

Waves building to 1 to 2 feet. 

.TUESDAY NIGHT...South wind 10 to 15 knots veering southwest

after midnight. Gusts up to 22 knots. Mostly cloudy. Showers and

a chance of thunderstorms in the evening, then a chance of

showers and a slight chance of thunderstorms after midnight.

Waves 1 to 2 feet. 



$$



LSZ249-242000-

Marquette to Munising MI-

501 AM EDT Mon Aug 24 2026



...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON...



.EARLY THIS MORNING...Northwest wind 15 to 20 knots. Clear. Waves

3 to 6 feet occasionally to 8 feet. 

.TODAY...Northwest wind 10 to 20 knots with gusts up to 28 knots.

Sunny. Waves subsiding to 2 to 3 feet. 

.TONIGHT...Northwest wind less than 10 knots backing southwest

late. Partly cloudy through midnight then becoming mostly cloudy.

Waves subsiding to 1 to 2 feet. 

.TUESDAY...South wind 5 to 15 knots with gusts up to 22 knots.

Partly cloudy. A slight chance of showers and thunderstorms in

the afternoon. Waves calm to 1 foot. 

.TUESDAY NIGHT...South wind 10 to 15 knots with gusts up to

24 knots. Showers and a chance of thunderstorms. Waves building

to 1 to 2 feet. 



$$



LSZ250-242000-

Munising to Grand Marais MI-

501 AM EDT Mon Aug 24 2026



...SMALL CRAFT ADVISORY IN EFFECT UNTIL 5 PM EDT THIS AFTERNOON...



.EARLY THIS MORNING...Northwest wind 20 to 25 knots. Clear. Waves

4 to 7 feet occasionally to 9 feet. 

.TODAY...Northwest wind 15 to 25 knots diminishing to 10 to

15 knots late. Sunny. Waves subsiding to 2 to 3 feet. 

.TONIGHT...Northwest wind less than 10 knots through midnight

becoming variable. Partly cloudy through midnight then becoming

mostly cloudy. Waves subsiding to 1 to 2 feet. 

.TUESDAY...South wind 5 to 15 knots. Partly cloudy. Waves calm to

1 foot. 

.TUESDAY NIGHT...South wind 10 to 15 knots with gusts up to

24 knots. Showers and a chance of thunderstorms. Waves building

to 1 to 2 feet. 



$$



LSZ251-242000-

Grand Marais to Whitefish Point MI-

501 AM EDT Mon Aug 24 2026



...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...



.EARLY THIS MORNING...Northwest wind 20 to 25 knots. Mostly

clear. Waves 5 to 8 feet occasionally to 10 feet. 

.TODAY...Northwest wind 20 to 25 knots diminishing to 15 to

20 knots late. Mostly sunny. Waves subsiding to 2 to 4 feet. 

.TONIGHT...Northwest wind 5 to 15 knots through midnight becoming

variable. Mostly clear. Waves subsiding to 1 to 2 feet. 

.TUESDAY...South wind less than 10 knots backing southeast 5 to

15 knots in the afternoon. Partly cloudy. Waves calm to 1 foot. 

.TUESDAY NIGHT...South wind 10 to 20 knots. Showers likely and a

slight chance of thunderstorms in the evening, then showers and a

chance of thunderstorms after midnight. Waves building to 2 to

3 feet. 



$$



WFO MQT






972 

FZUS53 KDLH 240948

NSHDLH



Nearshore Marine Forecast

National Weather Service Duluth MN

448 AM CDT Mon Aug 24 2026



For waters within five nautical miles of shore on Lake Superior.         



Waves are the significant wave height - the average of the highest 

1/3 of the wave spectrum. Occasional wave height is the average of 

the highest 1/10 of the wave spectrum.



LSZ140-241600-

Grand Portage to Grand Marais MN-

448 AM CDT Mon Aug 24 2026



.TODAY...North wind 5 knots becoming northeast late in the

morning, then becoming south in the afternoon. Mostly sunny.

Waves 1 foot or less. 

.TONIGHT...Southwest wind 5 to 10 knots becoming west after

midnight. Mostly cloudy. Waves 1 foot or less. 

.TUESDAY...Southeast wind 5 knots. Chance of rain showers through

the day. Chance of thunderstorms in the afternoon. Waves 1 foot

or less. 

.TUESDAY NIGHT...East wind 5 knots becoming west in the late

evening and overnight. Rain showers and chance of thunderstorms

in the evening, then slight chance of showers and thunderstorms

after midnight. Waves 1 foot or less. 



$$



LSZ141-241600-

Grand Marais to Taconite Harbor MN-

448 AM CDT Mon Aug 24 2026



.TODAY...North wind 5 knots early in the morning becoming

variable 10 knots or less, then becoming south 5 knots in the

afternoon. Mostly sunny. Waves 1 foot or less. 

.TONIGHT...Southeast wind 5 knots early in the evening becoming

variable 10 knots or less, then becoming north 5 knots early in

the morning. Slight chance of rain showers after midnight. Waves

1 foot or less. 

.TUESDAY...East wind 5 knots. Chance of rain showers through the

day. Chance of thunderstorms in the afternoon. Waves 1 foot or

less. 

.TUESDAY NIGHT...East wind 5 knots becoming north late in the

evening, then becoming west after midnight. Rain showers and

chance of thunderstorms in the evening, then slight chance of

showers and thunderstorms after midnight. Waves 1 foot or less. 



$$



LSZ142-241600-

Taconite Harbor to Silver Bay Harbor MN-

448 AM CDT Mon Aug 24 2026



.TODAY...North wind 5 knots early in the morning becoming

variable 10 knots or less, then becoming southeast 5 knots in the

afternoon. Mostly sunny. Waves 1 foot or less. 

.TONIGHT...Northeast wind 5 knots. Chance of rain showers after

midnight. Waves 1 foot or less. 

.TUESDAY...Northeast wind 5 knots becoming east in the afternoon.

Chance of rain showers in the morning, then rain showers likely

and chance of thunderstorms in the afternoon. Waves 1 foot or

less. 

.TUESDAY NIGHT...Northeast wind 5 knots becoming west after

midnight. Rain showers likely and chance of thunderstorms in the

evening. Waves 1 foot or less. 



$$



LSZ143-241600-

Silver Bay Harbor to Two Harbors MN-

448 AM CDT Mon Aug 24 2026



.TODAY...Variable winds 10 knots or less becoming east 5 knots in

the afternoon. Mostly sunny. Waves 1 foot or less. 

.TONIGHT...Northeast wind 5 knots. Slight chance of rain showers

after midnight. Waves 1 foot or less. 

.TUESDAY...Northeast wind 5 knots becoming east in the afternoon.

Slight chance of thunderstorms in the morning. Chance of rain

showers through the day. Chance of thunderstorms in the

afternoon. Waves 1 foot or less. 

.TUESDAY NIGHT...Northeast wind 5 knots becoming west after

midnight. Chance of thunderstorms in the evening. Chance of rain

showers through the night. Waves 1 foot or less. 



$$



LSZ144-241600-

Two Harbors to Duluth MN-

448 AM CDT Mon Aug 24 2026



.TODAY...Variable winds 10 knots or less becoming east 5 to

10 knots in the late morning and afternoon. Mostly sunny. Waves

1 foot or less. 

.TONIGHT...Northeast wind 5 to 10 knots. Slight chance of rain

showers after midnight. Waves 1 foot or less. 

.TUESDAY...East wind 5 knots becoming southeast in the late

morning and afternoon. Chance of rain showers and slight chance

of thunderstorms in the morning, then chance of thunderstorms and

slight chance of rain showers in the afternoon. Waves 1 foot or

less. 

.TUESDAY NIGHT...Southeast wind 5 to 10 knots becoming northwest

late in the evening, then becoming west after midnight. Chance of

showers and thunderstorms in the evening. Waves 1 foot or less. 



$$



LSZ145-241600-

Duluth MN to Port Wing WI-

448 AM CDT Mon Aug 24 2026



.TODAY...South wind 5 knots becoming east in the late morning and

afternoon. Patchy dense fog early in the morning. Waves 1 foot or

less. 

.TONIGHT...East wind 5 to 10 knots. Slight chance of rain showers

after midnight. Waves 1 foot or less. 

.TUESDAY...Southeast wind 5 knots becoming south in the late

morning and afternoon. Slight chance of thunderstorms in the

morning. Chance of rain showers through the day. Chance of

thunderstorms in the afternoon. Waves 1 foot or less. 

.TUESDAY NIGHT...South wind 5 to 10 knots becoming west in the

late evening and overnight. Chance of showers and thunderstorms

in the evening. Waves 1 foot or less. 



$$



LSZ146-241600-

Port Wing to Sand Island WI-

448 AM CDT Mon Aug 24 2026



.TODAY...Variable winds 10 knots or less becoming northeast

5 knots in the afternoon. Patchy fog early in the morning. Waves

1 foot or less. 

.TONIGHT...East wind 5 knots. Mostly cloudy. Waves 1 foot or

less. 

.TUESDAY...Southeast wind 5 knots becoming south late in the

morning, then becoming west early in the afternoon becoming east

late in the afternoon. Chance of rain showers through the day.

Chance of thunderstorms in the afternoon. Waves 1 foot or less. 

.TUESDAY NIGHT...East wind 5 to 10 knots becoming northwest late

in the evening, then becoming west after midnight. Chance of

thunderstorms in the evening. Chance of showers through the

night. Waves 1 foot or less. 



$$



LSZ147-241600-

Sand Island to Bayfield WI-

448 AM CDT Mon Aug 24 2026



.TODAY...Variable winds 10 knots or less becoming east 5 knots in

the afternoon. Mostly sunny. Waves 1 foot or less. 

.TONIGHT...Southeast wind 5 knots. Mostly cloudy. Waves 1 foot or

less. 

.TUESDAY...South wind 5 knots. Chance of rain showers through the

day. Chance of thunderstorms in the afternoon. Waves 1 foot or

less. 

.TUESDAY NIGHT...Southeast wind 5 knots becoming southwest in the

late evening and early morning, then becoming west early in the

morning. Showers likely and chance of thunderstorms in the

evening. Waves 1 foot or less. 



$$



LSZ150-241600-

Outer Apostle Islands Beyond 5 NM from Mainland-

448 AM CDT Mon Aug 24 2026



.TODAY...Northwest wind 5 knots becoming east in the afternoon.

Mostly sunny. Waves 1 foot or less. 

.TONIGHT...Southeast wind 5 knots. Mostly cloudy. Waves 1 foot or

less. 

.TUESDAY...South wind 5 to 10 knots. Chance of rain showers

through the day. Chance of thunderstorms in the afternoon. Waves

1 foot or less. 

.TUESDAY NIGHT...Southeast wind 5 to 10 knots becoming southwest

in the late evening and overnight. Chance of thunderstorms in the

evening. Showers likely through the night. Slight chance of

thunderstorms after midnight. Waves 1 foot or less. 



$$



LSZ121-241600-

Chequamegon Bay-Bayfield to Oak Point WI-

448 AM CDT Mon Aug 24 2026



.TODAY...West wind 5 knots early in the morning becoming variable

10 knots or less, then becoming east 5 knots in the afternoon.

Mostly sunny. Waves 1 foot or less. 

.TONIGHT...East wind 5 knots becoming south after midnight.

Partly cloudy in the evening then becoming mostly cloudy. Waves

1 foot or less. 

.TUESDAY...South wind 5 to 10 knots. Gusts up to 20 knots in the

afternoon. Chance of rain showers through the day. Chance of

thunderstorms in the afternoon. Waves 1 foot or less. 

.TUESDAY NIGHT...Southwest wind 5 to 10 knots becoming west after

midnight. Chance of thunderstorms in the evening. Showers likely

through the night. Waves 1foot or less. 



$$



LSZ148-241600-

Oak Point to Saxon Harbor WI-

448 AM CDT Mon Aug 24 2026



.TODAY...Southwest wind 5 knots becoming northwest late in the

morning, then becoming east in the afternoon. Mostly sunny. Waves

1 foot or less. 

.TONIGHT...East wind 5 knots becoming south after midnight.

Partly cloudy in the evening then becoming mostly cloudy. Waves

1 foot or less. 

.TUESDAY...South wind 5 to 10 knots. Chance of rain showers

through the day. Chance of thunderstorms in the afternoon. Waves

1 foot or less. 

.TUESDAY NIGHT...South wind 5 to 10 knots becoming southwest

after midnight. Chance of thunderstorms in the evening. Showers

likely through the night. Waves 1 foot or less. 



$$



Graphical marine forecasts are available online at: 

weather.gov/greatlakes 



WFO DLH