fzus63 kdtx 211346
glflh 
expires:202609212200;;819778

open lake forecast for lake huron
national weather service detroit/pontiac mi
946 am edt mon sep 21 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...high pressure, 30.40 inches, over northern ontario
will build southeast early this week. this will lead to prolong
moderate northeast winds over the central great lakes.


lhz361-212200-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
946 am edt mon sep 21 2026

.rest of today...east winds 10 to 20 knots becoming northeast. 
waves 2 to 4 feet subsiding to 1 to 3 feet late in the afternoon. 
.tonight...northeast winds 10 to 15 knots becoming east 15 to 20 
knots. waves 1 to 3 feet building to 2 to 4 feet early in the 
morning. 
.tuesday...east winds 15 to 20 knots decreasing to 10 to 15 knots
in the late morning and afternoon. waves 2 to 4 feet. 
.tuesday night...east winds 5 to 10 knots increasing to 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet in the late
evening and overnight. 
.wednesday...east winds 15 to 20 knots decreasing to 5 to
10 knots. waves 2 to 4 feet subsiding to 1 to 3 feet late in the
evening. 
.thursday...east winds 5 to 10 knots early in the morning
increasing to 10 to 15 knots...then decreasing to 5 to 10 knots
early in the evening becoming light and variable. waves 1 to
3 feet. 
.friday...light and variable winds. waves 2 feet or less. 


$$

fzus63 kdtx 211346
glflh 
expires:202609212200;;819779

open lake forecast for lake huron
national weather service detroit/pontiac mi
946 am edt mon sep 21 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...high pressure, 30.40 inches, over northern ontario
will build southeast early this week. this will lead to prolong
moderate northeast winds over the central great lakes.


lhz362-363-212200-
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-
946 am edt mon sep 21 2026

.rest of today...northeast winds 15 to 20 knots with gusts to 25
knots. waves 4 to 6 feet. 
.tonight...northeast winds 15 to 20 knots with gusts to 25 knots.
waves 4 to 6 feet. waves occasionally around 8 feet. 
.tuesday...northeast winds 15 to 20 knots. gusts to 30 knots
early in the afternoon. waves 4 to 6 feet. waves occasionally
around 8 feet. 
.tuesday night...northeast winds 15 to 20 knots. waves 4 to
6 feet. waves occasionally around 8 feet. 
.wednesday...east winds 15 to 20 knots decreasing to 10 to
15 knots late in the morning...then becoming northeast 15 to
20 knots late in the afternoon becoming east 10 to 15 knots late
in the evening. waves 3 to 5 feet. 
.thursday...east winds 10 to 15 knots becoming northeast 5 to
10 knots . waves 1 to 3 feet. 
.friday...light and variable winds becoming northeast 5 to
10 knots. waves 2 feet or less. 


$$

fzus63 kdtx 211346
glflh 
expires:202609212200;;819780

open lake forecast for lake huron
national weather service detroit/pontiac mi
946 am edt mon sep 21 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...high pressure, 30.40 inches, over northern ontario
will build southeast early this week. this will lead to prolong
moderate northeast winds over the central great lakes.


lhz462>464-212200-
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-
946 am edt mon sep 21 2026

.rest of today...northeast winds 15 to 20 knots. waves 4 to
6 feet. waves occasionally around 8 feet. 
.tonight...northeast winds 15 to 20 knots. waves 3 to 5 feet. 
.tuesday...northeast winds 15 to 20 knots. waves 3 to 5 feet. 
.tuesday night...east winds 15 to 20 knots. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.wednesday...east winds 15 to 20 knots decreasing to 10 to
15 knots late in the morning...then increasing to 15 to 20 knots
late in the afternoon. waves 3 to 5 feet. 
.thursday...east winds 10 to 15 knots decreasing to 5 to 10 knots
early in the evening...then increasing to 10 to 15 knots by
midnight. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...east winds 5 to 10 knots becoming north 10 to 15 knots
. waves 1 to 3 feet. 


$$

fzus63 kmkx 211358
glflm 
expires:202609212115;;820279

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
858 am cdt mon sep 21 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...

high pressure around 30.4 inches north of lake superior today 
will shift eastward into quebec tonight. the high will then 
largely remain in place through the middle of the week, while 
strengthening to around 30.7 inches by wednesday morning. gusty
east to northeast winds are expected today through wednesday. 
winds then look to diminish toward the end of the week, as the 
high pressure system slowly weakens and moves farther east.


lmz261-362-364-366-563-565-567-868-212115-
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-
858 am cdt mon sep 21 2026

sheboygan wi to pentwater mi north...

.rest of today...east winds 15 to 25 kt becoming northeast. waves
4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.tonight...northeast winds 15 to 25 kt becoming east 10 to 20 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.tuesday...east winds 10 to 20 kt becoming northeast 15 to 25 kt.
waves 3 to 5 ft. 
.tuesday night...east winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.wednesday...east winds 10 to 20 kt becoming northeast 15 to
25 kt. waves 2 to 4 ft. 
.wednesday night...east winds 15 to 25 kt becoming southeast
10 to 20 kt. waves 2 to 4 ft. 
.thursday...east winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 3 ft. 
.friday...southeast winds 5 to 10 kt becoming east 10 to 15 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 211358
glflm 
expires:202609212115;;820280

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
858 am cdt mon sep 21 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...

high pressure around 30.4 inches north of lake superior today 
will shift eastward into quebec tonight. the high will then 
largely remain in place through the middle of the week, while 
strengthening to around 30.7 inches by wednesday morning. gusty
east to northeast winds are expected today through wednesday. 
winds then look to diminish toward the end of the week, as the 
high pressure system slowly weakens and moves farther east.


lmz080-669-671-673-675-777-779-870-872-874-876-878-212115-
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-
858 am cdt mon sep 21 2026

sheboygan wi to pentwater mi south...

.rest of today...east winds to 30 kt becoming northeast 15 to 25 
kt. waves 7 to 10 ft occasionally to 13 ft. 
.tonight...northeast winds 15 to 25 kt becoming east. waves 5 to
8 ft occasionally to 10 ft. 
.tuesday...east winds 15 to 25 kt becoming northeast. waves 4 to
7 ft occasionally to 9 ft. 
.tuesday night...east winds 15 to 25 kt. waves 5 to 8 ft
occasionally to 10 ft. 
.wednesday...east winds 15 to 25 kt becoming northeast. waves
4 to 7 ft occasionally to 9 ft. 
.wednesday night...east winds 10 to 20 kt. waves 3 to 5 ft. 
.thursday...east winds 10 to 20 kt becoming northeast 10 to
15 kt. waves 3 to 5 ft. 
.friday...east winds 10 to 15 kt becoming northeast. waves 1 to
3 ft.  

$$

fzus63 kmqt 211401
glfls 
expires:202609212000;;820429

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon sep 21 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 30.4 inch high centered over southern ontario this morning moves 
east toward the ontario-quebec border, resulting in easterly winds 
of less than 20 knots over lake superior. the high slowly builds to 
30.5 inches as it shifts into quebec by midday tuesday, trailing a 
30.4 inch ridge over lake superior while surface winds persist as 
easterly. the high builds further to 30.6 inches by wednesday, 
remaining through wednesday night before weakening to 30.4 inches by 
thursday night. meanwhile, veering winds continue on to become 
southerly by thursday afternoon. by late friday, the high weakens to 
30.3 inches over the eastern great lakes basin as 29.5 inch low 
pressure develops over montana.




lsz162-212000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt mon sep 21 2026 /901 am cdt mon sep 21 2026/

.rest of today...east winds 10 to 20 knots becoming northeast
15 to 25 knots late. waves calm to 2 feet building to 1 to
3 feet. 
.tonight...east winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight. waves subsiding to calm to 2 feet. 
.tuesday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then becoming northeast 15 to 25 knots late.
waves building to 1 to 3 feet. 
.tuesday night...east winds 10 to 20 knots becoming southeast
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...east winds 10 to 20 knots veering south after
midnight. waves building to 1 to 3 feet, then subsiding to calm
to 2 feet. 
.thursday...south winds 5 to 15 knots backing east. waves calm to
2 feet. 
.friday...east winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 211401
glfls 
expires:202609212000;;820430

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon sep 21 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 30.4 inch high centered over southern ontario this morning moves 
east toward the ontario-quebec border, resulting in easterly winds 
of less than 20 knots over lake superior. the high slowly builds to 
30.5 inches as it shifts into quebec by midday tuesday, trailing a 
30.4 inch ridge over lake superior while surface winds persist as 
easterly. the high builds further to 30.6 inches by wednesday, 
remaining through wednesday night before weakening to 30.4 inches by 
thursday night. meanwhile, veering winds continue on to become 
southerly by thursday afternoon. by late friday, the high weakens to 
30.3 inches over the eastern great lakes basin as 29.5 inch low 
pressure develops over montana.




lsz263-212000-
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 mon sep 21 2026

.rest of today...east winds 5 to 15 knots increasing to 15 to
25 knots. waves calm to 2 feet building to 1 to 3 feet. 
.tonight...east winds 10 to 20 knots diminishing to 5 to 15 knots
after midnight, then veering southeast late. waves subsiding to
calm to 2 feet. 
.tuesday...east winds less than 10 knots increasing to 10 to
20 knots. waves calm to 2 feet. 
.tuesday night...east winds 10 to 20 knots becoming southeast
5 to 15 knots after midnight. waves calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.wednesday night...southeast winds 10 to 20 knots veering south
after midnight. waves building to 1 to 3 feet, then subsiding to
calm to 2 feet. 
.thursday...south winds 5 to 15 knots. waves calm to 2 feet. 
.friday...south winds 5 to 15 knots backing southeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 211401
glfls 
expires:202609212000;;820431

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon sep 21 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 30.4 inch high centered over southern ontario this morning moves 
east toward the ontario-quebec border, resulting in easterly winds 
of less than 20 knots over lake superior. the high slowly builds to 
30.5 inches as it shifts into quebec by midday tuesday, trailing a 
30.4 inch ridge over lake superior while surface winds persist as 
easterly. the high builds further to 30.6 inches by wednesday, 
remaining through wednesday night before weakening to 30.4 inches by 
thursday night. meanwhile, veering winds continue on to become 
southerly by thursday afternoon. by late friday, the high weakens to 
30.3 inches over the eastern great lakes basin as 29.5 inch low 
pressure develops over montana.




lsz264-212000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt mon sep 21 2026

.rest of today...east winds 5 to 15 knots. waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots diminishing to less than
10 knots late. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots veering southeast after
midnight. waves calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots. waves calm to 2 feet.
.wednesday night...southeast winds 10 to 20 knots becoming south
5 to 15 knots after midnight. waves calm to 2 feet. 
.thursday...south winds 5 to 15 knots. waves calm to 2 feet. 
.friday...southwest winds less than 10 knots becoming southeast
5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 211401
glfls 
expires:202609212000;;820432

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon sep 21 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 30.4 inch high centered over southern ontario this morning moves 
east toward the ontario-quebec border, resulting in easterly winds 
of less than 20 knots over lake superior. the high slowly builds to 
30.5 inches as it shifts into quebec by midday tuesday, trailing a 
30.4 inch ridge over lake superior while surface winds persist as 
easterly. the high builds further to 30.6 inches by wednesday, 
remaining through wednesday night before weakening to 30.4 inches by 
thursday night. meanwhile, veering winds continue on to become 
southerly by thursday afternoon. by late friday, the high weakens to 
30.3 inches over the eastern great lakes basin as 29.5 inch low 
pressure develops over montana.




lsz265-212000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt mon sep 21 2026

.rest of today...east winds 15 to 25 knots diminishing to 10 to
20 knots late. waves 2 to 4 feet subsiding to calm to 2 feet. 
.tonight...east winds 10 to 20 knots. waves calm to 2 feet. 
.tuesday...east winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. waves calm to 2 feet. 
.tuesday night...east winds 10 to 20 knots becoming southeast
5 to 15 knots after midnight. waves calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots becoming east 15 to
25 knots by mid afternoon. waves building to 1 to 3 feet. 
.wednesday night...southeast winds 15 to 25 knots becoming south
10 to 20 knots after midnight. waves subsiding to calm to 2 feet.
.thursday...southeast winds 10 to 20 knots becoming south 5 to
15 knots. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots veering south. waves calm to
2 feet. 

$$

fzus63 kmqt 211401
glfls 
expires:202609212000;;820433

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon sep 21 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 30.4 inch high centered over southern ontario this morning moves 
east toward the ontario-quebec border, resulting in easterly winds 
of less than 20 knots over lake superior. the high slowly builds to 
30.5 inches as it shifts into quebec by midday tuesday, trailing a 
30.4 inch ridge over lake superior while surface winds persist as 
easterly. the high builds further to 30.6 inches by wednesday, 
remaining through wednesday night before weakening to 30.4 inches by 
thursday night. meanwhile, veering winds continue on to become 
southerly by thursday afternoon. by late friday, the high weakens to 
30.3 inches over the eastern great lakes basin as 29.5 inch low 
pressure develops over montana.




lsz266-212000-
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 mon sep 21 2026

.rest of today...east winds 10 to 20 knots backing northeast
late. waves 1 to 3 feet subsiding to calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots veering east late. waves
calm to 2 feet. 
.tuesday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. waves calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots veering southeast after
midnight. waves calm to 2 feet. 
.wednesday...southeast winds 5 to 15 knots becoming east 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...southeast winds 10 to 20 knots veering south
after midnight. waves calm to 2 feet. 
.thursday...southeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 
.friday...south winds 5 to 15 knots backing southeast. waves calm
to 2 feet. 

$$

fzus63 kmqt 211401
glfls 
expires:202609212000;;820434

open lake forecast for lake superior
national weather service marquette mi
1001 am edt mon sep 21 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 30.4 inch high centered over southern ontario this morning moves 
east toward the ontario-quebec border, resulting in easterly winds 
of less than 20 knots over lake superior. the high slowly builds to 
30.5 inches as it shifts into quebec by midday tuesday, trailing a 
30.4 inch ridge over lake superior while surface winds persist as 
easterly. the high builds further to 30.6 inches by wednesday, 
remaining through wednesday night before weakening to 30.4 inches by 
thursday night. meanwhile, veering winds continue on to become 
southerly by thursday afternoon. by late friday, the high weakens to 
30.3 inches over the eastern great lakes basin as 29.5 inch low 
pressure develops over montana.




lsz267-212000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt mon sep 21 2026

.rest of today...east winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then backing northeast late. waves
calm to 2 feet. 
.tonight...northeast winds 10 to 20 knots veering east after
midnight. waves calm to 2 feet. 
.tuesday...east winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon, then backing northeast late. waves calm to
2 feet. 
.tuesday night...northeast winds 5 to 15 knots becoming southeast
10 to 20 knots after midnight. waves calm to 2 feet. 
.wednesday...southeast winds 10 to 20 knots becoming east 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.wednesday night...southeast winds 10 to 20 knots. waves calm to
2 feet. 
.thursday...southeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 
.friday...south winds 5 to 15 knots backing southeast. waves calm
to 2 feet. 

$$