fzus63 kdtx 030746
glflh 
expires:202609031600;;821235

open lake forecast for lake huron
national weather service detroit/pontiac mi
346 am edt thu sep 3 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 few remaining thunderstorms are passing through a
very muggy air mass tonight as a weak cold front drops southward
through region. light wind and thunderstorm chances persist as
the front stalls over the southern great lakes through late week.


lhz361-362-031600-
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-
346 am edt thu sep 3 2026

.today...light and variable winds. waves 2 feet or less. 
.tonight...light and variable winds. waves 2 feet or less. 
.friday...light and variable winds. waves 2 feet or less. 
.friday night...light and variable winds becoming north 5 to
10 knots after midnight. waves nearly calm. 
.saturday...northeast winds 5 to 10 knots in the morning becoming
light and variable. waves 2 feet or less. 
.sunday...light and variable winds. waves 2 feet or less. 
.monday...light and variable winds becoming east 5 to 10 knots
early in the evening...then becoming southeast 10 to 15 knots by
midnight. a chance of. waves 2 feet or less. 


$$

fzus63 kdtx 030746
glflh 
expires:202609031600;;821236

open lake forecast for lake huron
national weather service detroit/pontiac mi
346 am edt thu sep 3 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 few remaining thunderstorms are passing through a
very muggy air mass tonight as a weak cold front drops southward
through region. light wind and thunderstorm chances persist as
the front stalls over the southern great lakes through late week.


lhz363-462-031600-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
346 am edt thu sep 3 2026

.today...light and variable winds. waves 2 feet or less. 
.tonight...light and variable winds. waves 2 feet or less. 
.friday...light and variable winds. waves 2 feet or less. 
.friday night...north winds 5 to 10 knots. waves 2 feet or less. 
.saturday...northeast winds 5 to 10 knots. waves 2 feet or less. 
.sunday...light and variable winds becoming northeast 5 to
10 knots by midnight. waves 2 feet or less. 
.monday...southeast winds 5 to 10 knots. waves 2 feet or less. 


$$

fzus63 kmkx 030753
glflm 
expires:202609031515;;821443

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 am cdt thu sep 3 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...

a frontal boundary will remain across the great lakes region 
through friday. as this frontal boundary waffles north to south 
across the lake from day to day, generally east to northeast winds
are expected north of the front, with east to southeast winds 
south of the front. on and off thunderstorms will be possible 
along and north of this frontal boundary through at least friday 
night. then high pressure around 30.1 inches builds over hudson 
bay on saturday, while low pressure around 29.6 inches moves into 
the northern great plains. similar to earlier week storms, 
widespread severe weather is not anticipated, though isolated 
stronger storms with hail and gusty winds are possible.


lmz261-362-364-366-563-565-567-868-031515-
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-
253 am cdt thu sep 3 2026

sheboygan wi to pentwater mi north...

.today...east winds 5 to 10 kt becoming northeast. patchy fog
this morning. chance of showers and slight chance of
thunderstorms this morning, then chance of showers and
thunderstorms this afternoon. waves 1 ft or less. 
.tonight...northeast winds 5 to 10 kt. chance of showers and
thunderstorms in the evening, then chance of showers and slight
chance of thunderstorms overnight. waves 1 to 2 ft. 
.friday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
waves 1 to 2 ft. 
.friday night...northeast winds 10 to 15 kt becoming east 5 to
10 kt. chance of showers. waves 1 to 2 ft. 
.saturday...east winds 10 to 15 kt becoming northeast. waves 1 to
2 ft. 
.saturday night...east winds 10 to 15 kt becoming southeast.
waves 1 to 3 ft. 
.sunday...southeast winds 10 to 15 kt becoming south. waves 1 to
3 ft. 
.monday...south winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 030753
glflm 
expires:202609031515;;821444

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
253 am cdt thu sep 3 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...

a frontal boundary will remain across the great lakes region 
through friday. as this frontal boundary waffles north to south 
across the lake from day to day, generally east to northeast winds
are expected north of the front, with east to southeast winds 
south of the front. on and off thunderstorms will be possible 
along and north of this frontal boundary through at least friday 
night. then high pressure around 30.1 inches builds over hudson 
bay on saturday, while low pressure around 29.6 inches moves into 
the northern great plains. similar to earlier week storms, 
widespread severe weather is not anticipated, though isolated 
stronger storms with hail and gusty winds are possible.


lmz080-669-671-673-675-777-779-870-872-874-876-878-031515-
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-
253 am cdt thu sep 3 2026

sheboygan wi to pentwater mi south...

.today...south winds 10 to 15 kt backing to northeast 5 to 10 kt.
patchy fog this morning. chance of showers and slight chance of
thunderstorms this morning, then slight chance of showers and
thunderstorms this afternoon. waves 1 to 2 ft. 
.tonight...southeast winds 5 to 10 kt becoming northeast 10 to
15 kt. chance of showers and thunderstorms in the evening, then
showers likely with a chance of thunderstorms overnight. waves
1 to 2 ft. 
.friday...east winds 10 to 15 kt becoming northeast 5 to 10 kt.
waves 1 to 3 ft. 
.friday night...northeast winds 5 to 10 kt becoming east 10 to
15 kt. chance of showers and thunderstorms. waves 1 to 2 ft.
.saturday...east winds 10 to 15 kt. waves 1 to 3 ft. 
.saturday night...east winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday...southeast winds 10 to 15 kt becoming east. waves 2 to
4 ft. 
.monday...southeast winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmqt 030801
glfls 
expires:202609032000;;821597

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu sep 3 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...

29.9 inch ridge is expanding from manitoba into the upper great 
lakes as a 29.8 inch trough continues to slide eastward. the ridge 
remains over the area through friday while building to 30.0 inches. 
ridging will continue to build to 30.1 inches by sunday night and 
persist through monday afternoon.




lsz162-032000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt thu sep 3 2026 /300 am cdt thu sep 3 2026/

.early this morning...northeast winds 5 to 15 knots. patchy fog.
waves calm to 2 feet. 
.today...northeast winds 5 to 15 knots becoming east 15 to
25 knots in the afternoon, then becoming northeast 20 to 30 knots
late. waves building to 2 to 4 feet. 
.tonight...east winds 15 to 25 knots becoming northeast 10 to
20 knots after midnight. a slight chance of showers and
thunderstorms. waves subsiding to 1 to 3 feet. 
.friday...northeast winds 15 to 25 knots increasing to 20 to
30 knots late. a slight chance of showers through early
afternoon. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.friday night...northeast winds 15 to 25 knots diminishing to
5 to 15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...east winds 5 to 15 knots becoming northeast 10 to
20 knots. a chance of showers and thunderstorms. waves building
to 2 to 4 feet. 
.monday...east gales to 35 knots. a chance of showers. showers
likely. waves building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 030801
glfls 
expires:202609032000;;821598

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu sep 3 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...

29.9 inch ridge is expanding from manitoba into the upper great 
lakes as a 29.8 inch trough continues to slide eastward. the ridge 
remains over the area through friday while building to 30.0 inches. 
ridging will continue to build to 30.1 inches by sunday night and 
persist through monday afternoon.




lsz263-032000-
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-
400 am edt thu sep 3 2026

.early this morning...northeast winds less than 10 knots. patchy
fog. waves calm to 2 feet. 
.today...northeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then becoming east 20 to 30 knots
late. waves building to 1 to 3 feet. 
.tonight...east winds 15 to 25 knots diminishing to 10 to
20 knots after midnight. a slight chance of showers and
thunderstorms. patchy fog after midnight. waves subsiding to calm
to 2 feet. 
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. waves building to 2 to 4 feet. 
.friday night...east winds 15 to 25 knots diminishing to 5 to
15 knots after midnight. a slight chance of showers through
midnight. waves subsiding to calm to 2 feet. 
.saturday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots veering southeast
after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots increasing to 15 to 25 knots.
a chance of showers. waves building to 2 to 4 feet. 
.monday...east winds 20 to 30 knots veering southeast. a chance
of showers. showers likely. waves building to 3 to 6 feet
occasionally to 8 feet. 

$$

fzus63 kmqt 030801
glfls 
expires:202609032000;;821599

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu sep 3 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...

29.9 inch ridge is expanding from manitoba into the upper great 
lakes as a 29.8 inch trough continues to slide eastward. the ridge 
remains over the area through friday while building to 30.0 inches. 
ridging will continue to build to 30.1 inches by sunday night and 
persist through monday afternoon.




lsz264-032000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt thu sep 3 2026

.early this morning...north winds less than 10 knots. patchy fog.
waves calm to 2 feet. 
.today...northeast winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then veering east late. patchy fog.
waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots. patchy fog. waves calm to
2 feet. 
.friday...east winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon. waves calm to 2 feet. 
.friday night...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...southeast winds 5 to 15 knots. waves calm to
2 feet. 
.sunday...southeast winds 5 to 15 knots increasing to 10 to
20 knots. a chance of showers. waves building to 1 to 3 feet. 
.monday...east winds 15 to 25 knots becoming southeast 20 to
30 knots. a chance of showers, then showers likely. waves
building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 030801
glfls 
expires:202609032000;;821600

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu sep 3 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...

29.9 inch ridge is expanding from manitoba into the upper great 
lakes as a 29.8 inch trough continues to slide eastward. the ridge 
remains over the area through friday while building to 30.0 inches. 
ridging will continue to build to 30.1 inches by sunday night and 
persist through monday afternoon.




lsz265-032000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt thu sep 3 2026

.early this morning...west winds 5 to 15 knots. patchy fog. waves
calm to 2 feet. 
.today...north winds 5 to 15 knots veering northeast in the
afternoon, then becoming east 10 to 20 knots late. waves calm to
2 feet. 
.tonight...east winds 5 to 15 knots. patchy fog after midnight.
waves calm to 2 feet. 
.friday...east winds 10 to 20 knots increasing to 15 to 25 knots
in the afternoon. a slight chance of showers through early
afternoon. waves building to 1 to 3 feet. 
.friday night...east winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves subsiding to calm to 2 feet. 
.saturday...east winds 5 to 15 knots increasing to 15 to 25 knots
by mid afternoon. waves calm to 2 feet. 
.saturday night...southeast winds 10 to 20 knots. waves calm to
2 feet. 
.sunday...southeast winds 10 to 20 knots. a chance of showers.
waves calm to 2 feet. 
.monday...east winds 15 to 25 knots becoming southeast 20 to
30 knots. a chance of showers, then showers likely. waves
building to 3 to 6 feet occasionally to 8 feet. 

$$

fzus63 kmqt 030801
glfls 
expires:202609032000;;821601

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu sep 3 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...

29.9 inch ridge is expanding from manitoba into the upper great 
lakes as a 29.8 inch trough continues to slide eastward. the ridge 
remains over the area through friday while building to 30.0 inches. 
ridging will continue to build to 30.1 inches by sunday night and 
persist through monday afternoon.




lsz266-032000-
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-
400 am edt thu sep 3 2026

.early this morning...west winds 5 to 15 knots. patchy fog. waves
calm to 2 feet. 
.today...north winds 5 to 15 knots veering northeast in the
afternoon. patchy fog. waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots veering east after
midnight. patchy fog through midnight, then areas of dense fog
after midnight. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots. waves calm to 2 feet. 
.friday night...northeast winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots. waves calm to 2 feet. 
.saturday night...east winds 5 to 15 knots becoming southeast
10 to 20 knots after midnight. waves calm to 2 feet. 
.sunday...southeast winds 10 to 20 knots veering south. waves
building to 1 to 3 feet. 
.monday...east winds 15 to 25 knots becoming southeast 20 to
30 knots. a chance of showers. waves building to 3 to 6 feet
occasionally to 8 feet. 

$$

fzus63 kmqt 030801
glfls 
expires:202609032000;;821602

open lake forecast for lake superior
national weather service marquette mi
400 am edt thu sep 3 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...

29.9 inch ridge is expanding from manitoba into the upper great 
lakes as a 29.8 inch trough continues to slide eastward. the ridge 
remains over the area through friday while building to 30.0 inches. 
ridging will continue to build to 30.1 inches by sunday night and 
persist through monday afternoon.




lsz267-032000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt thu sep 3 2026

.early this morning...west winds 5 to 15 knots. areas of dense
fog. waves calm to 2 feet. 
.today...northwest winds 5 to 15 knots veering north late. areas
of dense fog through early afternoon, then patchy fog by mid
afternoon. waves calm to 2 feet. 
.tonight...north winds 5 to 15 knots veering east late. patchy
fog. waves calm to 2 feet. 
.friday...east winds 5 to 15 knots backing north late. waves calm
to 2 feet. 
.friday night...northeast winds 5 to 15 knots veering east after
midnight. waves calm to 2 feet. 
.saturday...east winds 5 to 15 knots backing northeast by mid
afternoon. waves calm to 2 feet. 
.saturday night...northeast winds 5 to 15 knots becoming
southeast 10 to 20 knots after midnight. waves calm to 2 feet. 
.sunday...southeast winds 10 to 20 knots veering south. waves
building to 1 to 3 feet. 
.monday...east winds 10 to 20 knots becoming southeast 15 to
25 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet. 

$$