fzus63 kdtx 200702
glflh 
expires:202609201515;;752214

open lake forecast for lake huron
national weather service detroit/pontiac mi
302 am edt sun sep 20 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 weak low pressure system follows a stalled front
from the central plains into the ohio valley this weekend. a
broad area of high pressure then builds into northern ontario and
the northern great lakes sunday into monday.


lhz361-362-201515-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
302 am edt sun sep 20 2026

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


$$

fzus63 kdtx 200702
glflh 
expires:202609201515;;752215

open lake forecast for lake huron
national weather service detroit/pontiac mi
302 am edt sun sep 20 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 weak low pressure system follows a stalled front
from the central plains into the ohio valley this weekend. a
broad area of high pressure then builds into northern ontario and
the northern great lakes sunday into monday.


lhz363-462>464-201515-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
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-
302 am edt sun sep 20 2026

.today...northeast winds 5 to 10 knots becoming north 15 to
20 knots. waves 1 to 3 feet building to 3 to 5 feet in the
afternoon. 
.tonight...northeast winds 15 to 20 knots increasing to 20 to
25 knots after midnight. waves 4 to 6 feet. 
.monday...northeast winds 15 to 20 knots. waves 4 to 6 feet.
waves occasionally around 8 feet. 
.monday night...northeast winds 15 to 20 knots. waves 4 to
6 feet. waves occasionally around 8 feet. 
.tuesday...northeast winds 15 to 20 knots with gusts to around
30 knots increasing to 20 to 25 knots with gusts to around
30 knots late in the afternoon...then becoming east 15 to
20 knots late in the evening. waves 4 to 6 feet. 
.wednesday...east winds 15 to 20 knots. waves 4 to 6 feet. waves
occasionally around 8 feet. 
.thursday...east winds 10 to 15 knots becoming northeast 5 to
10 knots . waves 2 to 4 feet subsiding to 1 to 3 feet . 


$$

fzus63 kmkx 200813
glflm 
expires:202609201530;;755323

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 am cdt sun sep 20 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...

low pressure around 29.8 inches will move from southeast iowa 
into the ohio valley today into monday. meanwhile, high pressure 
around 30.4 inches will strengthen and move east into ontario 
today into monday, then into quebec for monday night into 
wednesday. gusty northeast winds are expected today into tonight,
becoming east and remaining gusty monday into wednesday. a few
gale force gusts may occur today into monday, mainly over southern
portions of the lake. building waves are expected over western
portions of the lake today into the middle of the week. lighter 
easterly winds should then linger for thursday into friday, as the
high pressure system slowly moves further east.


lmz261-362-364-366-563-565-567-868-201530-
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-
313 am cdt sun sep 20 2026

sheboygan wi to pentwater mi north...

.today...northeast winds 15 to 25 kt increasing to 30 kt. waves
4 to 7 ft occasionally to 9 ft building to 7 to 10 ft
occasionally to 13 ft. 
.tonight...northeast winds to 30 kt becoming east 15 to 25 kt.
waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.monday...east winds 15 to 25 kt becoming northeast to 30 kt.
waves 4 to 7 ft occasionally to 9 ft. 
.monday night...northeast winds to 30 kt becoming east 15 to
25 kt. waves 4 to 7 ft occasionally to 9 ft. 
.tuesday...northeast winds 15 to 25 kt increasing to 30 kt. waves
4 to 6 ft occasionally to 8 ft. 
.tuesday night...east winds to 30 kt diminishing to 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.wednesday...east winds 15 to 25 kt becoming northeast. waves
3 to 5 ft. 
.thursday...east winds 10 to 15 kt becoming northeast 10 to
20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 200813
glflm 
expires:202609201530;;755324

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 am cdt sun sep 20 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...

low pressure around 29.8 inches will move from southeast iowa 
into the ohio valley today into monday. meanwhile, high pressure 
around 30.4 inches will strengthen and move east into ontario 
today into monday, then into quebec for monday night into 
wednesday. gusty northeast winds are expected today into tonight,
becoming east and remaining gusty monday into wednesday. a few
gale force gusts may occur today into monday, mainly over southern
portions of the lake. building waves are expected over western
portions of the lake today into the middle of the week. lighter 
easterly winds should then linger for thursday into friday, as the
high pressure system slowly moves further east.


lmz080-669-671-673-675-777-779-870-872-874-876-878-201530-
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-
313 am cdt sun sep 20 2026

sheboygan wi to pentwater mi south...

.today...northeast winds 15 to 25 kt increasing to 30 kt. patchy
fog. scattered showers and slight chance of thunderstorms this
morning, then scattered showers this afternoon. waves 4 to 7 ft
occasionally to 9 ft building to 10 to 14 ft occasionally to
18 ft. 
.tonight...northeast winds to 30 kt becoming east. waves 10 to
14 ft occasionally to 18 ft subsiding to 7 to 10 ft occasionally
to 13 ft. 
.monday...east winds to 30 kt becoming northeast. waves 8 to
11 ft occasionally to 14 ft subsiding to 7 to 10 ft occasionally
to 13 ft. 
.monday night...northeast winds to 30 kt. waves 6 to 9 ft
occasionally to 12 ft. 
.tuesday...northeast winds to 30 kt. waves 6 to 9 ft occasionally
to 12 ft. 
.tuesday night...northeast winds to 30 kt diminishing to 15 to
25 kt. waves 5 to 8 ft occasionally to 10 ft. 
.wednesday...northeast winds 15 to 25 kt. waves 5 to 8 ft
occasionally to 10 ft. 
.thursday...east winds 10 to 20 kt becoming northeast 10 to
15 kt. waves 3 to 5 ft.  

$$

fzus63 kmqt 200801
glfls 
expires:202609202000;;754154

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun sep 20 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...

today and monday, a 30.2 inch high over manitoba builds to 30.4 
inches as it moves into northwestern ontario. this high pressure 
center slowly builds to 30.5 inches as it shifts into quebec by 
midday tuesday, trailing a 30.4 inch ridge over lake superior. the 
high builds further to 30.6 inches wednesday as it progresses 
eastward. the high, still over southern quebec, weakens to 30.4 
inches thursday. 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.




lsz162-202000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
401 am edt sun sep 20 2026 /301 am cdt sun sep 20 2026/

.early this morning...northeast winds 15 to 25 knots. waves calm
to 2 feet building to 1 to 3 feet. 
.today...northeast winds 15 to 25 knots increasing to 20 to
30 knots in the afternoon, then becoming east 15 to 25 knots
late. waves building to 3 to 6 feet occasionally to 8 feet. 
.tonight...east winds 10 to 20 knots. waves subsiding to 1 to
3 feet. 
.monday...east winds 10 to 20 knots. waves subsiding to calm to
2 feet, then building to 2 to 4 feet. 
.monday night...east winds 15 to 25 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
by mid afternoon. 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...east winds 10 to 20 knots. waves calm to 2 feet. 
.thursday...south winds 5 to 15 knots backing east. waves calm to
2 feet. 

$$

fzus63 kmqt 200801
glfls 
expires:202609202000;;754155

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun sep 20 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...

today and monday, a 30.2 inch high over manitoba builds to 30.4 
inches as it moves into northwestern ontario. this high pressure 
center slowly builds to 30.5 inches as it shifts into quebec by 
midday tuesday, trailing a 30.4 inch ridge over lake superior. the 
high builds further to 30.6 inches wednesday as it progresses 
eastward. the high, still over southern quebec, weakens to 30.4 
inches thursday. 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.




lsz263-202000-
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-
401 am edt sun sep 20 2026

.early this morning...northeast winds 15 to 25 knots. waves 1 to
3 feet building to 2 to 4 feet. 
.today...northeast winds 15 to 25 knots. waves building to 3 to
6 feet occasionally to 8 feet. 
.tonight...northeast winds 10 to 20 knots becoming east 5 to
15 knots after midnight. waves subsiding to 1 to 3 feet. 
.monday...east winds 5 to 15 knots increasing to 10 to 20 knots
late. waves subsiding to calm to 2 feet, then building to 1 to
3 feet. 
.monday night...east winds 15 to 25 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
by mid 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 veering south. waves
calm to 2 feet. 
.thursday...south winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 200801
glfls 
expires:202609202000;;754156

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun sep 20 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...

today and monday, a 30.2 inch high over manitoba builds to 30.4 
inches as it moves into northwestern ontario. this high pressure 
center slowly builds to 30.5 inches as it shifts into quebec by 
midday tuesday, trailing a 30.4 inch ridge over lake superior. the 
high builds further to 30.6 inches wednesday as it progresses 
eastward. the high, still over southern quebec, weakens to 30.4 
inches thursday. 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.




lsz264-202000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
401 am edt sun sep 20 2026

.early this morning...northeast winds 15 to 25 knots. waves 1 to
3 feet building to 2 to 4 feet. 
.today...northeast winds 15 to 25 knots diminishing to 10 to
20 knots late. waves building to 3 to 5 feet occasionally to
7 feet, then subsiding to 2 to 4 feet. 
.tonight...northeast winds 5 to 15 knots veering east after
midnight. waves subsiding to calm to 2 feet. 
.monday...east winds 5 to 15 knots. waves calm to 2 feet. 
.monday night...east winds 5 to 15 knots. 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 veering south. waves
calm to 2 feet. 
.thursday...south winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 200801
glfls 
expires:202609202000;;754157

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun sep 20 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...

today and monday, a 30.2 inch high over manitoba builds to 30.4 
inches as it moves into northwestern ontario. this high pressure 
center slowly builds to 30.5 inches as it shifts into quebec by 
midday tuesday, trailing a 30.4 inch ridge over lake superior. the 
high builds further to 30.6 inches wednesday as it progresses 
eastward. the high, still over southern quebec, weakens to 30.4 
inches thursday. 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.




lsz265-202000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
401 am edt sun sep 20 2026

.early this morning...north winds 15 to 25 knots. waves calm to
2 feet building to 1 to 3 feet. 
.today...northeast winds 20 to 30 knots diminishing to 15 to
25 knots late. waves building to 3 to 5 feet occasionally to
7 feet. 
.tonight...northeast winds 15 to 25 knots veering east after
midnight. waves subsiding to 2 to 4 feet. 
.monday...east winds 10 to 20 knots. waves subsiding to calm to
2 feet. 
.monday night...east winds 10 to 20 knots. waves calm to 2 feet. 
.tuesday...east winds 10 to 20 knots increasing to 15 to 25 knots
by mid 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...east winds 10 to 20 knots veering south. waves calm
to 2 feet. 
.thursday...southeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 

$$

fzus63 kmqt 200801
glfls 
expires:202609202000;;754158

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun sep 20 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...

today and monday, a 30.2 inch high over manitoba builds to 30.4 
inches as it moves into northwestern ontario. this high pressure 
center slowly builds to 30.5 inches as it shifts into quebec by 
midday tuesday, trailing a 30.4 inch ridge over lake superior. the 
high builds further to 30.6 inches wednesday as it progresses 
eastward. the high, still over southern quebec, weakens to 30.4 
inches thursday. 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.




lsz266-202000-
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-
401 am edt sun sep 20 2026

.early this morning...north winds 15 to 25 knots. waves calm to
2 feet building to 1 to 3 feet. 
.today...northeast winds 20 to 30 knots diminishing to 15 to
25 knots in the afternoon, then backing north late. waves
building to 3 to 5 feet occasionally to 7 feet. 
.tonight...northeast winds 10 to 20 knots becoming east 15 to
25 knots after midnight, then diminishing to 10 to 20 knots late.
waves subsiding to 2 to 4 feet. 
.monday...east winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon. waves subsiding to calm to 2 feet. 
.monday night...northeast winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.tuesday...east winds 10 to 20 knots. waves calm to 2 feet. 
.tuesday night...east winds 5 to 15 knots veering southeast after
midnight. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. waves calm to 2 feet. 
.thursday...southeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 

$$

fzus63 kmqt 200801
glfls 
expires:202609202000;;754159

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun sep 20 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...

today and monday, a 30.2 inch high over manitoba builds to 30.4 
inches as it moves into northwestern ontario. this high pressure 
center slowly builds to 30.5 inches as it shifts into quebec by 
midday tuesday, trailing a 30.4 inch ridge over lake superior. the 
high builds further to 30.6 inches wednesday as it progresses 
eastward. the high, still over southern quebec, weakens to 30.4 
inches thursday. 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.




lsz267-202000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
401 am edt sun sep 20 2026

.early this morning...north winds 10 to 20 knots. waves calm to
2 feet. 
.today...northeast winds 15 to 25 knots backing north late. waves
building to 3 to 5 feet occasionally to 7 feet, then subsiding to
2 to 4 feet. 
.tonight...northeast winds 15 to 25 knots veering east after
midnight, then diminishing to 10 to 20 knots late. waves
subsiding to 1 to 3 feet. 
.monday...east winds 10 to 20 knots diminishing to 5 to 15 knots
in the afternoon, then becoming northeast 10 to 20 knots late.
waves subsiding to calm to 2 feet. 
.monday night...northeast winds 10 to 20 knots veering east after
midnight. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet. 
.tuesday night...east winds 10 to 20 knots veering southeast
after midnight. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots becoming southeast 10 to
20 knots. waves calm to 2 feet. 
.thursday...southeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 

$$