fzus63 kdtx 090647
glflh 
expires:202608091500;;868623

open lake forecast for lake huron
national weather service detroit/pontiac mi
247 am edt sun aug 9 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 around 30.00 inches slides east through
the ohio valley tonight through sunday, allowing winds to become
southerly once again for sunday. sunday evening through early
next week an active pattern with a stalled frontal boundary
draped over the southern great lakes region brings back chances
for organized thunderstorms to the region. by the end of next
week, high pressure around 30.1 inches builds south from central
canada.


lhz361-091500-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
247 am edt sun aug 9 2026

.today...southwest winds 5 to 10 knots backing to the northeast
late in the afternoon. waves 2 feet or less. 
.tonight...light and variable winds. a chance of showers after
midnight. waves 2 feet or less. 
.monday...northwest winds 5 to 10 knots. waves 2 feet or less. 
.monday night...west winds 5 to 10 knots  becoming light and
variable. waves 2 feet or less. 
.tuesday...light and variable winds. waves 2 feet or less. 
.wednesday...light and variable winds becoming northwest 5 to
10 knots . waves 2 feet or less. 
.thursday...northwest winds 10 to 15 knots becoming west 15 to
20 knots early in the evening...then becoming northwest 10 to
15 knots by midnight. waves 1 to 3 feet building to 3 to 5 feet .


$$

fzus63 kdtx 090647
glflh 
expires:202608091500;;868624

open lake forecast for lake huron
national weather service detroit/pontiac mi
247 am edt sun aug 9 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 around 30.00 inches slides east through
the ohio valley tonight through sunday, allowing winds to become
southerly once again for sunday. sunday evening through early
next week an active pattern with a stalled frontal boundary
draped over the southern great lakes region brings back chances
for organized thunderstorms to the region. by the end of next
week, high pressure around 30.1 inches builds south from central
canada.


lhz362-363-091500-
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-
247 am edt sun aug 9 2026

.today...southwest winds 5 to 10 knots becoming south 10 to
15 knots in the afternoon. waves 1 to 3 feet building to 2 to
4 feet late in the afternoon. 
.tonight...southeast winds 10 to 15 knots becoming south 5 to
10 knots by midnight...then veering to the southwest early in the
morning. a chance of showers. waves 2 to 4 feet subsiding to 1 to
3 feet after midnight. 
.monday...west winds 5 to 10 knots. a chance of showers in the
morning. waves 2 feet or less. 
.monday night...north winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less. 
.tuesday...light and variable winds. waves 2 feet or less. 
.wednesday...light and variable winds becoming north 5 to
10 knots early in the evening...then backing to the northwest by
midnight. waves 2 feet or less. 
.thursday...northwest winds 10 to 15 knots. waves 1 to 3 feet
building to 3 to 5 feet . 


$$

fzus63 kdtx 090647
glflh 
expires:202608091500;;868625

open lake forecast for lake huron
national weather service detroit/pontiac mi
247 am edt sun aug 9 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 around 30.00 inches slides east through
the ohio valley tonight through sunday, allowing winds to become
southerly once again for sunday. sunday evening through early
next week an active pattern with a stalled frontal boundary
draped over the southern great lakes region brings back chances
for organized thunderstorms to the region. by the end of next
week, high pressure around 30.1 inches builds south from central
canada.


lhz462>464-091500-
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-
247 am edt sun aug 9 2026

.today...light and variable winds becoming southwest 5 to
10 knots in the late morning and early afternoon...then backing
to the south late in the afternoon. waves 2 feet or less. 
.tonight...south winds 5 to 10 knots increasing to 10 to 15 knots
by midnight...then becoming southwest 5 to 10 knots early in the
morning. a chance of showers after midnight. waves 1 to 3 feet. 
.monday...west winds 5 to 10 knots veering to the northwest early
in the afternoon. a chance of showers in the morning. waves
2 feet or less. 
.monday night...light and variable winds. waves 2 feet or less. 
.tuesday...light and variable winds in the morning becoming east
5 to 10 knots...then backing to the northeast late in the
afternoon becoming light and variable. a chance of showers. waves
2 feet or less. 
.wednesday...north winds 5 to 10 knots backing to the west in the
late morning and early afternoon...then veering to the north .
waves 2 feet or less. 
.thursday...northwest winds 10 to 15 knots decreasing to 5 to
10 knots early in the evening...then becoming northwest 5 to
10 knots by midnight. waves 2 feet or less building to 2 to
4 feet by midnight. 


$$

fzus63 kmkx 090202
glflm 
expires:202608090945;;856540

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
902 pm cdt sat aug 8 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...

winds will become southerly by this evening as a low pressure
trough around 29.8 inches approaches from the minnesota arrowhead.
an unsettled weather pattern will set up over the upper great 
lakes all week where weak waves of low pressure will cross the 
region and produce rounds of thunderstorms at times. the first
round of weakening storms should arrive in southern lake michigan
late sunday morning, and additional storms are possible there
sunday night.


lmz080-669-671-673-675-777-779-870-872-874-876-878-090945-
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 pm cdt sat aug 8 2026

sheboygan wi to pentwater mi south...

.rest of tonight...south winds 10 to 15 kt. waves 1 to 2 ft.
.sunday...south winds 10 to 20 kt. chance of showers and slight
chance of thunderstorms in the morning, then chance of showers
and thunderstorms in the afternoon. waves 1 to 3 ft building to
2 to 4 ft. 
.sunday night...south winds 10 to 20 kt becoming southwest.
chance of showers and thunderstorms in the evening, then chance
of showers overnight. patchy fog overnight. waves 2 to 4 ft. 
.monday...northwest winds 10 to 20 kt becoming north 10 to 15 kt.
chance of showers in the morning, then chance of showers and
thunderstorms in the afternoon. waves 1 to 3 ft. 
.monday night...northeast winds 5 to 10 kt. chance of showers and
thunderstorms in the evening, then chance of showers overnight.
waves 1 ft or less. 
.tuesday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
chance of showers and thunderstorms in the morning, then chance
of showers in the afternoon. waves 1 ft or less. 
.tuesday night...northeast winds 5 to 10 kt. chance of showers.
waves 1 ft or less. 
.wednesday...southeast winds 10 to 15 kt becoming south. waves
1 ft or less. 
.thursday...north winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 090202
glflm 
expires:202608090945;;856539

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
902 pm cdt sat aug 8 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...

winds will become southerly by this evening as a low pressure
trough around 29.8 inches approaches from the minnesota arrowhead.
an unsettled weather pattern will set up over the upper great 
lakes all week where weak waves of low pressure will cross the 
region and produce rounds of thunderstorms at times. the first
round of weakening storms should arrive in southern lake michigan
late sunday morning, and additional storms are possible there
sunday night.


lmz261-362-364-366-563-565-567-868-090945-
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 pm cdt sat aug 8 2026

sheboygan wi to pentwater mi north...

.rest of tonight...southwest winds 10 to 15 kt increasing to
10 to 20 kt. waves 1 to 3 ft. 
.sunday...southwest winds 10 to 20 kt becoming south 15 to 25 kt.
chance of showers in the afternoon. waves 1 to 3 ft building to
2 to 4 ft. 
.sunday night...southwest winds 10 to 20 kt diminishing to 10 to
15 kt late in the evening, then becoming west 5 to 10 kt after
midnight becoming northwest late. patchy fog overnight. waves
2 to 4 ft subsiding to 1 to 3 ft. 
.monday...north winds 5 to 10 kt becoming northwest 10 to 15 kt.
patchy dense fog in the morning. waves 1 to 2 ft. 
.monday night...southeast winds 10 to 15 kt becoming northeast.
waves 1 ft or less. 
.tuesday...northeast winds 5 to 10 kt increasing to 10 to 15 kt.
chance of showers in the morning. waves 1 ft or less.
.tuesday night...northeast winds 10 to 15 kt diminishing to 5 to
10 kt. waves nearly calm. 
.wednesday...west winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 ft or less. 
.thursday...north winds 10 to 20 kt increasing to 15 to 25 kt.
waves 1 to 3 ft.  

$$

fzus63 kmqt 090801
glfls 
expires:202608092000;;870986

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun aug 9 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...

upper michigan is situated between a 29.6 inch hudson bay low and a 
30.0 inch high centered over the ohio river valley. this will drive 
weak and ill-defined 29.9 inch ridging/troughing over lake superior 
today through monday night as the high moves southeast. weak ridging 
of 30.0 inches extending between a 30.2 inch bermuda high and 30.0 
inch ridging over western canada returns for tuesday before 
decreasing to 29.9 inches tuesday night. a 29.8 inch trough moves 
over the lake wednesday before ridging of 30.0 inches returns on 
thursday from the canadian prairie.




lsz266-092000-
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 sun aug 9 2026

.early this morning...southwest winds 10 to 20 knots. a chance of
showers. waves calm to 2 feet. 
.today...southwest winds 10 to 20 knots becoming south 5 to
15 knots in the afternoon, then backing northeast late. a chance
of showers. a slight chance of thunderstorms by mid afternoon.
waves calm to 2 feet. 
.tonight...east winds 5 to 15 knots backing north after midnight,
then backing southwest late. a slight chance of showers through
midnight. patchy fog through midnight, then areas of dense fog
after midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots. areas of dense fog
through early afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.tuesday...west winds 5 to 15 knots veering northeast by mid
afternoon. waves calm to 2 feet. 
.tuesday night...southwest winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots increasing to 10 to
20 knots. waves calm to 2 feet. 
.thursday...northwest winds 10 to 20 knots. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 090801
glfls 
expires:202608092000;;870987

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun aug 9 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...

upper michigan is situated between a 29.6 inch hudson bay low and a 
30.0 inch high centered over the ohio river valley. this will drive 
weak and ill-defined 29.9 inch ridging/troughing over lake superior 
today through monday night as the high moves southeast. weak ridging 
of 30.0 inches extending between a 30.2 inch bermuda high and 30.0 
inch ridging over western canada returns for tuesday before 
decreasing to 29.9 inches tuesday night. a 29.8 inch trough moves 
over the lake wednesday before ridging of 30.0 inches returns on 
thursday from the canadian prairie.




lsz267-092000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt sun aug 9 2026

.early this morning...southwest winds 10 to 20 knots. a chance of
showers. waves calm to 2 feet. 
.today...west winds 10 to 20 knots becoming south 5 to 15 knots
in the afternoon, then backing northeast late. a chance of
showers. waves calm to 2 feet. 
.tonight...northeast winds 5 to 15 knots backing north after
midnight. a slight chance of showers through midnight. patchy fog
through midnight, then areas of dense fog after midnight. waves
calm to 2 feet. 
.monday...northwest winds 5 to 15 knots backing west in the
afternoon, then veering northwest late. areas of dense fog
through early afternoon. waves calm to 2 feet. 
.monday night...west winds 5 to 15 knots backing south after
midnight. waves calm to 2 feet. 
.tuesday...south winds 5 to 15 knots veering northwest by mid
afternoon. waves calm to 2 feet. 
.tuesday night...northwest winds 5 to 15 knots backing west after
midnight. waves calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots increasing to 10 to
20 knots. waves calm to 2 feet. 
.thursday...northwest winds 10 to 20 knots. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 

$$

fzus63 kmqt 090801
glfls 
expires:202608092000;;870982

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun aug 9 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...

upper michigan is situated between a 29.6 inch hudson bay low and a 
30.0 inch high centered over the ohio river valley. this will drive 
weak and ill-defined 29.9 inch ridging/troughing over lake superior 
today through monday night as the high moves southeast. weak ridging 
of 30.0 inches extending between a 30.2 inch bermuda high and 30.0 
inch ridging over western canada returns for tuesday before 
decreasing to 29.9 inches tuesday night. a 29.8 inch trough moves 
over the lake wednesday before ridging of 30.0 inches returns on 
thursday from the canadian prairie.




lsz162-092000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt sun aug 9 2026 /300 am cdt sun aug 9 2026/

.early this morning...west winds 5 to 15 knots. a chance of
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.today...west winds 5 to 15 knots backing southwest in the
afternoon. a chance of showers through early afternoon. patchy
fog. waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots veering west after
midnight. patchy fog. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest in the
afternoon. waves calm to 2 feet. 
.monday night...west winds 5 to 15 knots becoming north less than
10 knots after midnight. waves calm to 2 feet. 
.tuesday...north winds less than 10 knots becoming south 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.tuesday night...west winds 5 to 15 knots veering northwest after
midnight. a chance of showers. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.thursday...southwest winds 5 to 15 knots veering north. waves
calm to 2 feet. 

$$

fzus63 kmqt 090801
glfls 
expires:202608092000;;870983

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun aug 9 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...

upper michigan is situated between a 29.6 inch hudson bay low and a 
30.0 inch high centered over the ohio river valley. this will drive 
weak and ill-defined 29.9 inch ridging/troughing over lake superior 
today through monday night as the high moves southeast. weak ridging 
of 30.0 inches extending between a 30.2 inch bermuda high and 30.0 
inch ridging over western canada returns for tuesday before 
decreasing to 29.9 inches tuesday night. a 29.8 inch trough moves 
over the lake wednesday before ridging of 30.0 inches returns on 
thursday from the canadian prairie.




lsz263-092000-
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 sun aug 9 2026

.early this morning...west winds 5 to 15 knots. a chance of
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.today...southwest winds 5 to 15 knots veering west in the
afternoon, then backing southwest late. a chance of showers
through early afternoon. patchy fog. waves calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots diminishing to less than
10 knots after midnight. patchy fog. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots backing southwest in the
afternoon, then increasing to 10 to 20 knots late. patchy fog
through early afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.tuesday...north winds less than 10 knots becoming south 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.tuesday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 090801
glfls 
expires:202608092000;;870984

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun aug 9 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...

upper michigan is situated between a 29.6 inch hudson bay low and a 
30.0 inch high centered over the ohio river valley. this will drive 
weak and ill-defined 29.9 inch ridging/troughing over lake superior 
today through monday night as the high moves southeast. weak ridging 
of 30.0 inches extending between a 30.2 inch bermuda high and 30.0 
inch ridging over western canada returns for tuesday before 
decreasing to 29.9 inches tuesday night. a 29.8 inch trough moves 
over the lake wednesday before ridging of 30.0 inches returns on 
thursday from the canadian prairie.




lsz264-092000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt sun aug 9 2026

.early this morning...west winds 5 to 15 knots. a chance of
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.today...southwest winds 5 to 15 knots. a chance of showers
through early afternoon. patchy fog. waves calm to 2 feet. 
.tonight...southwest winds less than 10 knots. patchy fog through
midnight, then areas of dense fog after midnight. waves calm to
2 feet. 
.monday...southwest winds less than 10 knots increasing to 5 to
15 knots in the afternoon. areas of dense fog through early
afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.tuesday...west winds less than 10 knots becoming southwest 5 to
15 knots by mid afternoon. waves calm to 2 feet. 
.tuesday night...southwest winds less than 10 knots veering west
after midnight. waves calm to 2 feet. 
.wednesday...west winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.thursday...northwest winds 5 to 15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 090801
glfls 
expires:202608092000;;870985

open lake forecast for lake superior
national weather service marquette mi
400 am edt sun aug 9 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...

upper michigan is situated between a 29.6 inch hudson bay low and a 
30.0 inch high centered over the ohio river valley. this will drive 
weak and ill-defined 29.9 inch ridging/troughing over lake superior 
today through monday night as the high moves southeast. weak ridging 
of 30.0 inches extending between a 30.2 inch bermuda high and 30.0 
inch ridging over western canada returns for tuesday before 
decreasing to 29.9 inches tuesday night. a 29.8 inch trough moves 
over the lake wednesday before ridging of 30.0 inches returns on 
thursday from the canadian prairie.




lsz265-092000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt sun aug 9 2026

.early this morning...west winds 10 to 20 knots. a chance of
showers. waves calm to 2 feet. 
.today...southwest winds 5 to 15 knots backing east in the
afternoon. a chance of showers. a slight chance of thunderstorms
by mid afternoon. waves calm to 2 feet. 
.tonight...southeast winds 5 to 15 knots veering southwest late.
patchy fog through midnight, then areas of dense fog after
midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots. patchy dense fog through
early afternoon. waves calm to 2 feet. 
.monday night...southwest winds 5 to 15 knots increasing to 10 to
20 knots after midnight. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots backing east by mid
afternoon. waves calm to 2 feet. 
.tuesday night...south winds 5 to 15 knots veering west after
midnight. waves calm to 2 feet. 
.wednesday...northwest winds 10 to 20 knots. waves calm to
2 feet. 
.thursday...northwest winds 10 to 20 knots backing west. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 

$$