fzus63 kdtx 261348
glflh 
expires:202608262200;;391471

open lake forecast for lake huron
national weather service detroit/pontiac mi
948 am edt wed aug 26 2026

for waters beyond five nautical miles off shore on lake huron

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.

.synopsis...a cold front will move through tonight bringing 
increasing chances for showers and thunderstorms ahead of it for 
this afternoon and evening. wind direction veers south to west 
after passage of the front then northwest flow holds through 
thursday. high pressure builds back into the great lakes friday 
into saturday.


lhz361-262200-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
948 am edt wed aug 26 2026

.rest of today...south winds 10 to 15 knots becoming southeast
5 to 10 knots late in the afternoon. a chance of showers late in
the morning...then showers likely and a chance of thunderstorms
in the afternoon. a chance of waterspouts in the afternoon. waves
1 to 3 feet. 
.tonight...southeast winds 5 to 10 knots veering to the west late
in the evening...then increasing to 10 to 15 knots after
midnight. a chance of showers and thunderstorms in the evening. a
chance of waterspouts in the evening. waves 1 to 3 feet. 
.thursday...northwest winds 10 to 15 knots. waves 2 to 4 feet. 
.thursday night...northwest winds 10 to 15 knots. waves 2 to
4 feet subsiding to 1 to 3 feet after midnight. 
.friday...northwest winds 5 to 10 knots becoming light and
variable...then becoming south 5 to 10 knots late in the evening.
waves 2 feet or less. 
.saturday...south winds 5 to 10 knots. waves 2 feet or less. 
.sunday...south winds 10 to 15 knots decreasing to 5 to 10 knots
. a chance of showers. waves 2 feet or less. 


$$

fzus63 kdtx 261348
glflh 
expires:202608262200;;391472

open lake forecast for lake huron
national weather service detroit/pontiac mi
948 am edt wed aug 26 2026

for waters beyond five nautical miles off shore on lake huron

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.

.synopsis...a cold front will move through tonight bringing 
increasing chances for showers and thunderstorms ahead of it for 
this afternoon and evening. wind direction veers south to west 
after passage of the front then northwest flow holds through 
thursday. high pressure builds back into the great lakes friday 
into saturday.


lhz362-363-262200-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
948 am edt wed aug 26 2026

.rest of today...south winds 10 to 15 knots increasing to 15 to
20 knots in the afternoon. a chance of showers and thunderstorms
in the afternoon. waves 3 to 5 feet. 
.tonight...south winds 10 to 15 knots veering to the southwest
after midnight. showers likely and a chance of thunderstorms in
the evening. a chance of waterspouts. waves 2 to 4 feet. 
.thursday...west winds 10 to 15 knots. waves 2 to 4 feet. 
.thursday night...northwest winds 10 to 15 knots. waves 2 to
4 feet. 
.friday...north winds 5 to 10 knots becoming light and variable.
waves 2 feet or less. 
.saturday...south winds 5 to 10 knots increasing to 10 to
15 knots . waves 1 to 3 feet. 
.sunday...south winds 10 to 15 knots. a chance of showers. waves
2 to 4 feet. 


$$

fzus63 kdtx 261348
glflh 
expires:202608262200;;391473

open lake forecast for lake huron
national weather service detroit/pontiac mi
948 am edt wed aug 26 2026

for waters beyond five nautical miles off shore on lake huron

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.

.synopsis...a cold front will move through tonight bringing 
increasing chances for showers and thunderstorms ahead of it for 
this afternoon and evening. wind direction veers south to west 
after passage of the front then northwest flow holds through 
thursday. high pressure builds back into the great lakes friday 
into saturday.


lhz462>464-262200-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
948 am edt wed aug 26 2026

.rest of today...south winds 10 to 15 knots increasing to 15 to
20 knots late in the afternoon. waves 1 to 3 feet building to
2 to 4 feet in the afternoon. 
.tonight...south winds 10 to 15 knots veering to the southwest
early in the morning. a chance of waterspouts in the evening.
showers likely and a chance of thunderstorms in the evening...
then a chance of showers after midnight. waves 2 to 4 feet
subsiding to 1 to 3 feet after midnight. 
.thursday...west winds 10 to 15 knots becoming northwest 5 to
10 knots early in the afternoon. waves 1 to 3 feet. 
.thursday night...north winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet in the late evening and overnight. 
.friday...north winds 5 to 10 knots veering to the east late in
the evening. waves 1 to 3 feet. 
.saturday...south winds 5 to 10 knots increasing to 10 to
15 knots by midnight. waves 2 feet or less. 
.sunday...south winds 10 to 15 knots. waves 1 to 3 feet. 


$$

fzus63 kmkx 261402
glflm 
expires:202608262115;;391792

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
902 am cdt wed aug 26 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

no major changes to the going forecast with this issuance.

breezy south winds will continue through the morning as the 
pressure gradient sharpens ahead of a slow-moving cold front and 
low pressure of 29.7 inches just north of lake superior. winds 
will become more southwesterly later this morning, then westerly 
with the frontal passage in the afternoon. look for lighter
northwesterly winds behind the front tonight.

the northwest winds will grow breezier for a bit on thursday
ahead of another cold front dropping south over the lake, but
winds will then become lighter and northeasterly thursday night
into friday as high pressure of 30.2 inches moves into the upper
great lakes region.


lmz261-362-364-366-563-565-567-868-262115-
lake michigan from seul choix point to rock island passage 5 nm
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 5 nm offshore-
lake michigan from charlevoix to point betsie mi 5 nm offshore to
mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
lake michigan from rock island passage to sturgeon bay wi-
lake michigan from sturgeon bay to two rivers wi 5 nm offshore to
mid lake-
lake michigan from two rivers to sheboygan wi 5 nm offshore to
mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
902 am cdt wed aug 26 2026

sheboygan wi to pentwater mi north...

.rest of today...southwest winds 15 to 25 kt diminishing to 10 to
20 kt. chance of showers and thunderstorms. waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft. 
.tonight...northwest winds 10 to 20 kt. slight chance of showers
and thunderstorms in the evening. waves 2 to 4 ft subsiding to
1 to 3 ft. 
.thursday...northwest winds 10 to 20 kt becoming north 15 to
25 kt. waves 2 to 4 ft. 
.thursday night...north winds 15 to 25 kt diminishing to 10 to
15 kt overnight. waves 1 to 3 ft. 
.friday...north winds 10 to 15 kt becoming northeast 10 to 20 kt.
waves 1 to 2 ft. 
.friday night...southeast winds 10 to 20 kt becoming south 10 to
15 kt. waves 1 to 3 ft. 
.saturday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. 
.sunday...south gales to 35 kt. chance of showers. waves 6 to
9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 261402
glflm 
expires:202608262115;;391793

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
902 am cdt wed aug 26 2026

for waters beyond five nautical miles of shore on lake michigan.

waves are provided as a range of significant wave heights, which
is the average of the highest 1/3 of the wave, along with the
average height of the highest 10% of the waves which will
occasionally be encountered.

.synopsis...

no major changes to the going forecast with this issuance.

breezy south winds will continue through the morning as the 
pressure gradient sharpens ahead of a slow-moving cold front and 
low pressure of 29.7 inches just north of lake superior. winds 
will become more southwesterly later this morning, then westerly 
with the frontal passage in the afternoon. look for lighter
northwesterly winds behind the front tonight.

the northwest winds will grow breezier for a bit on thursday
ahead of another cold front dropping south over the lake, but
winds will then become lighter and northeasterly thursday night
into friday as high pressure of 30.2 inches moves into the upper
great lakes region.


lmz080-669-671-673-675-777-779-870-872-874-876-878-262115-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from port washington to north point light wi 5 nm
offshore to mid lake-
lake michigan from north point light to wind point wi 5 nm
offshore to mid lake-
lake michigan from wind point wi to winthrop harbor il 5 nm
offshore to mid lake-
lake michigan from winthrop harbor to wilmette harbor il 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
lake michigan from grand haven to whitehall mi 5 nm offshore to
mid lake-
lake michigan from holland to grand haven mi 5 nm offshore to mid
lake-
lake michigan from south haven to holland mi 5 nm offshore to mid
lake-
lake michigan from st. joseph to south haven mi 5 nm offshore to
mid lake-
902 am cdt wed aug 26 2026

sheboygan wi to pentwater mi south...

.rest of today...southwest winds 15 to 25 kt diminishing to 10 to
20 kt. slight chance of showers and thunderstorms. waves 4 to
6 ft occasionally to 8 ft subsiding to 3 to 5 ft. 
.tonight...west winds 10 to 20 kt becoming northwest 10 to 15 kt.
waves 2 to 4 ft. 
.thursday...northwest winds 10 to 20 kt becoming north 15 to
25 kt. waves 3 to 5 ft. 
.thursday night...northeast winds 10 to 20 kt diminishing to
10 to 15 kt. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.friday...northeast winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.friday night...east winds 10 to 20 kt veering to southeast 10 to
15 kt. waves 1 to 3 ft. 
.saturday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. 
.sunday...south gales to 35 kt. chance of showers. waves 6 to
9 ft occasionally to 12 ft.  

$$

fzus63 kmqt 261401
glfls 
expires:202608262000;;391739

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed aug 26 2026

for waters beyond 5 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.

.synopsis...

a 29.7 inch clipper over lake superior today lifts into james bay by 
this evening. by thursday morning, a 30.2 inch high pressure over 
manitoba starts stretching towards lake superior. this high moves 
over the lake by friday morning before continuing into new england 
on saturday. on saturday night, a low pressure over the central to 
northern plains deepens to 29.6 inches. this low approaches the 
great lakes by early next week.




lsz162-262000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt wed aug 26 2026 /901 am cdt wed aug 26 2026/

.rest of today...west winds 15 to 25 knots. waves calm to 2 feet.
.tonight...northwest winds 10 to 20 knots. waves calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots backing southwest in
the afternoon, then backing south late. waves calm to 2 feet. 
.thursday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.friday...east winds less than 10 knots increasing to 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots backing northeast after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.sunday...east winds 10 to 20 knots backing northeast. a chance
of showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 261401
glfls 
expires:202608262000;;391740

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed aug 26 2026

for waters beyond 5 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.

.synopsis...

a 29.7 inch clipper over lake superior today lifts into james bay by 
this evening. by thursday morning, a 30.2 inch high pressure over 
manitoba starts stretching towards lake superior. this high moves 
over the lake by friday morning before continuing into new england 
on saturday. on saturday night, a low pressure over the central to 
northern plains deepens to 29.6 inches. this low approaches the 
great lakes by early next week.




lsz263-262000-
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-
1001 am edt wed aug 26 2026

.rest of today...west winds 15 to 25 knots. a slight chance of
showers. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tonight...northwest winds 10 to 20 knots diminishing to 5 to
15 knots after midnight, then veering north late. a slight chance
of showers through midnight. waves subsiding to calm to 2 feet. 
.thursday...north winds 5 to 15 knots veering south late. a
slight chance of showers by mid afternoon. waves calm to 2 feet. 
.thursday night...northeast winds less than 10 knots veering east
after midnight. waves calm to 2 feet. 
.friday...southwest winds less than 10 knots becoming south 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.friday night...southeast winds 5 to 15 knots veering south after
midnight. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.sunday...south winds 5 to 15 knots increasing to 10 to 20 knots.
a chance of showers. waves building to 1 to 3 feet. 

$$

fzus63 kmqt 261401
glfls 
expires:202608262000;;391741

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed aug 26 2026

for waters beyond 5 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.

.synopsis...

a 29.7 inch clipper over lake superior today lifts into james bay by 
this evening. by thursday morning, a 30.2 inch high pressure over 
manitoba starts stretching towards lake superior. this high moves 
over the lake by friday morning before continuing into new england 
on saturday. on saturday night, a low pressure over the central to 
northern plains deepens to 29.6 inches. this low approaches the 
great lakes by early next week.




lsz264-262000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt wed aug 26 2026

.rest of today...west winds 10 to 20 knots diminishing to 5 to
15 knots late. a slight chance of showers by mid afternoon. waves
1 to 3 feet. 
.tonight...northwest winds 10 to 20 knots veering north late. a
chance of showers. waves subsiding to calm to 2 feet, then
building to 1 to 3 feet. 
.thursday...north winds 5 to 15 knots backing northwest late. a
slight chance of showers through early afternoon. waves subsiding
to calm to 2 feet. 
.thursday night...northwest winds 5 to 15 knots diminishing to
less than 10 knots after midnight. waves calm to 2 feet. 
.friday...west winds less than 10 knots becoming southwest 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...south winds 5 to 15 knots. a chance of showers. waves
calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots becoming south 10 to
20 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 261401
glfls 
expires:202608262000;;391742

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed aug 26 2026

for waters beyond 5 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.

.synopsis...

a 29.7 inch clipper over lake superior today lifts into james bay by 
this evening. by thursday morning, a 30.2 inch high pressure over 
manitoba starts stretching towards lake superior. this high moves 
over the lake by friday morning before continuing into new england 
on saturday. on saturday night, a low pressure over the central to 
northern plains deepens to 29.6 inches. this low approaches the 
great lakes by early next week.




lsz265-262000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt wed aug 26 2026

.rest of today...west winds 15 to 25 knots becoming northwest
20 to 30 knots late. a slight chance of showers and
thunderstorms. waves calm to 2 feet building to 1 to 3 feet. 
.tonight...northwest winds 15 to 25 knots increasing to 20 to
30 knots after midnight, then diminishing to 15 to 25 knots late.
a slight chance of showers through midnight. waves building to
2 to 4 feet. 
.thursday...north winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. waves subsiding to calm to 2 feet. 
.thursday night...north winds 5 to 15 knots. waves calm to
2 feet. 
.friday...west winds 5 to 15 knots backing east by mid afternoon.
waves calm to 2 feet. 
.friday night...southeast winds 10 to 20 knots veering south
after midnight. waves calm to 2 feet. 
.saturday...south winds 10 to 20 knots increasing to 15 to
25 knots. a chance of showers. waves calm to 2 feet. 
.sunday...south winds 10 to 20 knots increasing to 15 to
25 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 261401
glfls 
expires:202608262000;;391743

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed aug 26 2026

for waters beyond 5 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.

.synopsis...

a 29.7 inch clipper over lake superior today lifts into james bay by 
this evening. by thursday morning, a 30.2 inch high pressure over 
manitoba starts stretching towards lake superior. this high moves 
over the lake by friday morning before continuing into new england 
on saturday. on saturday night, a low pressure over the central to 
northern plains deepens to 29.6 inches. this low approaches the 
great lakes by early next week.




lsz266-262000-
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-
1001 am edt wed aug 26 2026

.rest of today...southwest winds 10 to 20 knots veering west in
the afternoon, then becoming northwest 15 to 25 knots late. a
slight chance of showers and thunderstorms by late morning. waves
1 to 3 feet subsiding to calm to 2 feet, then building to 1 to
3 feet. 
.tonight...northwest winds 15 to 25 knots. a slight chance of
showers through midnight. waves building to 3 to 5 feet
occasionally to 7 feet. 
.thursday...north winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon, then backing northwest late. waves
subsiding to 1 to 3 feet. 
.thursday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...northwest winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.saturday...south winds 10 to 20 knots increasing to 15 to
25 knots. a chance of showers. waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet. 
.sunday...south winds 10 to 20 knots. a chance of showers. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 

$$

fzus63 kmqt 261401
glfls 
expires:202608262000;;391744

open lake forecast for lake superior
national weather service marquette mi
1001 am edt wed aug 26 2026

for waters beyond 5 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.

.synopsis...

a 29.7 inch clipper over lake superior today lifts into james bay by 
this evening. by thursday morning, a 30.2 inch high pressure over 
manitoba starts stretching towards lake superior. this high moves 
over the lake by friday morning before continuing into new england 
on saturday. on saturday night, a low pressure over the central to 
northern plains deepens to 29.6 inches. this low approaches the 
great lakes by early next week.




lsz267-262000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt wed aug 26 2026

.rest of today...south winds 15 to 25 knots becoming west 10 to
20 knots in the afternoon. a chance of showers and thunderstorms.
waves 1 to 3 feet subsiding to calm to 2 feet. 
.tonight...west winds 10 to 20 knots becoming northwest 15 to
25 knots after midnight. a slight chance of showers. waves
building to 3 to 5 feet occasionally to 7 feet. 
.thursday...north winds 15 to 25 knots backing northwest in the
afternoon. a slight chance of showers through early afternoon.
waves subsiding to 2 to 4 feet. 
.thursday night...northwest winds 10 to 20 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.friday...northwest winds 5 to 15 knots backing west by mid
afternoon. waves calm to 2 feet. 
.friday night...south winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...south winds 10 to 20 knots increasing to 15 to
25 knots. a chance of showers. waves building to 1 to 3 feet. 
.sunday...south winds 10 to 20 knots. a chance of showers. waves
subsiding to calm to 2 feet. 

$$