fzus63 kdtx 091340 aaa
glflh 
expires:202608092145;;883137

open lake forecast for lake huron...updated
national weather service detroit/pontiac mi
940 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 today, allowing winds to become southerly once
again. this 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.


lhz361-092145-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
940 am edt sun aug 9 2026

.rest of today...southwest winds 5 to 10 knots veering to the
north late in the afternoon. waves 2 feet or less. 
.tonight...east winds 5 to 10 knots early in the evening becoming
light and variable. 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 091340 aaa
glflh 
expires:202608092145;;883138

open lake forecast for lake huron...updated
national weather service detroit/pontiac mi
940 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 today, allowing winds to become southerly once
again. this 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.


lhz362-363-092145-
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-
940 am edt sun aug 9 2026

.rest of today...south winds 10 to 15 knots. waves 1 to 3 feet
building to 2 to 4 feet late in the afternoon. 
.tonight...southeast winds 5 to 10 knots. a chance of showers.
waves 2 to 4 feet subsiding to 1 to 3 feet in the late evening
and overnight. 
.monday...northwest 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 1 to 3 feet. 
.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 4 to 6 feet . waves occasionally around 8 feet. 


$$

fzus63 kdtx 091340 aaa
glflh 
expires:202608092145;;883139

open lake forecast for lake huron...updated
national weather service detroit/pontiac mi
940 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 today, allowing winds to become southerly once
again. this 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>464-092145-
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-
940 am edt sun aug 9 2026

.rest of today...south winds 5 to 10 knots. waves 2 feet or less.
.tonight...south winds 5 to 10 knots increasing to 10 to 15 knots
by midnight...then veering to the west 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...north winds 5 to 10 knots early in the evening
becoming light and variable. 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 1 to 3 feet building to 2 to 4 feet
by midnight. 


$$

fzus63 kmkx 091401
glflm 
expires:202608092130;;883767

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
901 am cdt sun aug 9 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 today will be southerly and breezy, then grow light and
variable for a time tonight ahead of a cold front. the front will
move southward down the lake into monday, leading to light
northerly winds through the morning on monday and light and
variable winds monday afternoon and evening. light and variable
winds then persist into tuesday as high pressure of 30.0 inches
remains in place north of a frontal boundary parked over the corn
belt. otherwise an unsettled weather pattern has set up over the 
upper great lakes this week where weak waves of low pressure will
cross the region and produce rounds of thunderstorms at times
primarily a risk for the south half. the first round of weakening
storms should arrive late morning and early afternoon, and 
additional storms are possible there sunday night and beyond.


lmz261-362-364-366-563-565-567-868-092130-
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-
901 am cdt sun aug 9 2026

sheboygan wi to pentwater mi north...

.rest of today...southwest winds 10 to 15 kt becoming south 15 to
25 kt. chance of showers through mid morning, then chance of
showers and slight chance of thunderstorms this afternoon. waves
2 to 4 ft. 
.tonight...southwest winds 10 to 20 kt diminishing to 10 to 15 kt
late in the evening, then diminishing to 5 to 10 kt after
midnight becoming west late. slight chance of showers and
thunderstorms in the evening, then slight chance of showers
overnight. patchy fog overnight. waves 2 to 4 ft subsiding to
1 to 2 ft. 
.monday...north winds 5 to 10 kt backing to south 10 to 15 kt.
waves 1 to 2 ft. 
.monday night...southeast winds 10 to 15 kt becoming northeast.
waves 1 to 2 ft. 
.tuesday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
chance of showers. waves 1 ft or less. 
.tuesday night...north winds 5 to 10 kt. waves 1 ft or less.
.wednesday...northwest winds 5 to 10 kt becoming north 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 kmkx 091401
glflm 
expires:202608092130;;883768

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
901 am cdt sun aug 9 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 today will be southerly and breezy, then grow light and
variable for a time tonight ahead of a cold front. the front will
move southward down the lake into monday, leading to light
northerly winds through the morning on monday and light and
variable winds monday afternoon and evening. light and variable
winds then persist into tuesday as high pressure of 30.0 inches
remains in place north of a frontal boundary parked over the corn
belt. otherwise an unsettled weather pattern has set up over the 
upper great lakes this week where weak waves of low pressure will
cross the region and produce rounds of thunderstorms at times
primarily a risk for the south half. the first round of weakening
storms should arrive late morning and early afternoon, and 
additional storms are possible there sunday night and beyond.


lmz080-669-671-673-675-777-779-870-872-874-876-878-092130-
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-
901 am cdt sun aug 9 2026

sheboygan wi to pentwater mi south...

.rest of today...south winds 10 to 15 kt increasing to 15 to
25 kt, then diminishing to 10 to 20 kt late. slight chance of
showers through mid morning, then chance of showers and
thunderstorms this afternoon. waves 2 to 4 ft. 
.tonight...south winds 10 to 20 kt becoming west. chance of
showers and thunderstorms. patchy fog overnight. waves 2 to 4 ft
subsiding to 1 to 3 ft. 
.monday...northwest winds 10 to 15 kt becoming northeast. patchy
dense fog in the morning. waves 1 to 2 ft. 
.monday night...northeast winds 5 to 10 kt. chance of showers.
waves 1 ft or less. 
.tuesday...east winds 5 to 10 kt becoming northeast 10 to 15 kt.
chance of showers. waves 1 ft or less. 
.tuesday night...northeast winds 5 to 10 kt. chance of showers
and thunderstorms. waves 1 ft or less. 
.wednesday...north winds 5 to 10 kt becoming northwest 10 to
15 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 091401
glfls 
expires:202608092000;;883770

open lake forecast for lake superior
national weather service marquette mi
1001 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...

a 29.9 inch trough moves over the lake today into tonight. then, 
weak ridging of 29.9 inches returns on monday and holds through 
tuesday. another weak trough at 29.8 inches moves over the lake 
tuesday night into wednesday before high pressure gradually builds 
over the great lakes from western canada through friday to 30.1 
inches.




lsz162-092000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt sun aug 9 2026 /901 am cdt sun aug 9 2026/

.rest of today...west winds 5 to 15 knots backing southwest in
the 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 091401
glfls 
expires:202608092000;;883771

open lake forecast for lake superior
national weather service marquette mi
1001 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...

a 29.9 inch trough moves over the lake today into tonight. then, 
weak ridging of 29.9 inches returns on monday and holds through 
tuesday. another weak trough at 29.8 inches moves over the lake 
tuesday night into wednesday before high pressure gradually builds 
over the great lakes from western canada through friday to 30.1 
inches.




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-
1001 am edt sun aug 9 2026

.rest of today...west winds less than 10 knots increasing to 5 to
15 knots in the afternoon, then backing southwest late. 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 091401
glfls 
expires:202608092000;;883772

open lake forecast for lake superior
national weather service marquette mi
1001 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...

a 29.9 inch trough moves over the lake today into tonight. then, 
weak ridging of 29.9 inches returns on monday and holds through 
tuesday. another weak trough at 29.8 inches moves over the lake 
tuesday night into wednesday before high pressure gradually builds 
over the great lakes from western canada through friday to 30.1 
inches.




lsz264-092000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt sun aug 9 2026

.rest of today...west winds 5 to 15 knots backing southwest in
the 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 091401
glfls 
expires:202608092000;;883773

open lake forecast for lake superior
national weather service marquette mi
1001 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...

a 29.9 inch trough moves over the lake today into tonight. then, 
weak ridging of 29.9 inches returns on monday and holds through 
tuesday. another weak trough at 29.8 inches moves over the lake 
tuesday night into wednesday before high pressure gradually builds 
over the great lakes from western canada through friday to 30.1 
inches.




lsz265-092000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt sun aug 9 2026

.rest of today...southwest winds 5 to 15 knots backing east in
the afternoon. a slight 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. 

$$

fzus63 kmqt 091401
glfls 
expires:202608092000;;883774

open lake forecast for lake superior
national weather service marquette mi
1001 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...

a 29.9 inch trough moves over the lake today into tonight. then, 
weak ridging of 29.9 inches returns on monday and holds through 
tuesday. another weak trough at 29.8 inches moves over the lake 
tuesday night into wednesday before high pressure gradually builds 
over the great lakes from western canada through friday to 30.1 
inches.




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-
1001 am edt sun aug 9 2026

.rest of today...southwest winds 10 to 20 knots becoming south
5 to 15 knots in the afternoon, then backing northeast late. a
slight 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 091401
glfls 
expires:202608092000;;883775

open lake forecast for lake superior
national weather service marquette mi
1001 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...

a 29.9 inch trough moves over the lake today into tonight. then, 
weak ridging of 29.9 inches returns on monday and holds through 
tuesday. another weak trough at 29.8 inches moves over the lake 
tuesday night into wednesday before high pressure gradually builds 
over the great lakes from western canada through friday to 30.1 
inches.




lsz267-092000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt sun aug 9 2026

.rest of today...south winds 5 to 15 knots 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. 

$$