fzus63 kdtx 071343
glflh 
expires:202608072145;;771450

open lake forecast for lake huron
national weather service detroit/pontiac mi
943 am edt fri aug 7 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...light southerly flow through tonight out ahead of a
cold front which passes through on saturday. winds shift to the
northwest and briefly top out at or above 20 knots over northern
lake huron saturday evening. high pressure, 30.00 inches, slides
east through the ohio valley saturday night, allowing winds to
become southerly once again for sunday.


lhz361-072145-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
943 am edt fri aug 7 2026

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


$$

fzus63 kdtx 071343
glflh 
expires:202608072145;;771451

open lake forecast for lake huron
national weather service detroit/pontiac mi
943 am edt fri aug 7 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...light southerly flow through tonight out ahead of a
cold front which passes through on saturday. winds shift to the
northwest and briefly top out at or above 20 knots over northern
lake huron saturday evening. high pressure, 30.00 inches, slides
east through the ohio valley saturday night, allowing winds to
become southerly once again for sunday.


lhz362-363-072145-
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-
943 am edt fri aug 7 2026

.rest of today...southeast winds 5 to 15 knots. a chance of 
showers late in the morning. waves 2 feet or less. 
.tonight...southeast winds 10 to 15 knots. waves 1 to 3 feet. 
.saturday...southwest winds 5 to 10 knots. a chance of showers in
the afternoon. waves 1 to 3 feet. 
.saturday night...north winds 5 to 10 knots  becoming light and
variable. waves 2 to 4 feet subsiding to 1 to 3 feet in the late
evening and overnight. 
.sunday...southwest winds 5 to 10 knots becoming south 10 to
15 knots late in the morning...then decreasing to 5 to 10 knots
late in the afternoon. a chance of showers late in the afternoon.
waves 1 to 3 feet. 
.monday...light and variable winds becoming north 5 to 10 knots
early in the evening...then veering to the south by midnight. a
chance of showers. waves 2 feet or less. 
.tuesday...northwest winds 5 to 10 knots until afternoon becoming
light and variable. waves 2 feet or less. 


$$

fzus63 kdtx 071343
glflh 
expires:202608072145;;771452

open lake forecast for lake huron
national weather service detroit/pontiac mi
943 am edt fri aug 7 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...light southerly flow through tonight out ahead of a
cold front which passes through on saturday. winds shift to the
northwest and briefly top out at or above 20 knots over northern
lake huron saturday evening. high pressure, 30.00 inches, slides
east through the ohio valley saturday night, allowing winds to
become southerly once again for sunday.


lhz462>464-072145-
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-
943 am edt fri aug 7 2026

.rest of today...south winds 5 to 15 knots. a chance of showers 
in the afternoon. waves 2 feet or less. 
.tonight...south winds 10 to 15 knots. a chance of showers in the
evening. waves 2 feet or less. 
.saturday...southwest winds 5 to 10 knots. a chance of showers in
the afternoon. waves 1 to 3 feet. 
.saturday night...north winds 5 to 10 knots  becoming light and
variable. waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots becoming south 10 to
15 knots late in the afternoon...then decreasing to 5 to 10 knots
late in the evening. a chance of showers late in the afternoon.
waves 2 feet or less. 
.monday...southwest winds 5 to 10 knots backing to the south by
midnight. a chance of showers early in the morning. a chance of
thunderstorms until early evening. rain showers likely . waves
2 feet or less. 
.tuesday...west winds 5 to 10 knots becoming light and variable.
a chance of showers early in the morning. waves 2 feet or less. 


$$

fzus63 kmkx 071404
glflm 
expires:202608072115;;772336

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
904 am cdt fri aug 7 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...

patchy marine fog this morning over primarily the southern portion
of the lake may linger into the early afternoon.

otherwise, light southerly winds tonight will increase by friday 
afternoon as a low pressure trough of 29.8 inches reaches lake 
superior. scattered showers and storms are possible friday night 
as an associated cold front crosses lake michigan. west to 
northwest winds behind the front early saturday will quickly 
return to southerly by saturday evening ahead of the next 
approaching low pressure system. an unsettled weather pattern will
set up over the upper great lakes next week where weak waves of 
low pressure will cross the region and produce rounds of 
thunderstorms at times.


lmz261-362-364-366-563-565-567-868-072115-
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-
904 am cdt fri aug 7 2026

sheboygan wi to pentwater mi north...

.rest of today...south winds 10 to 20 kt increasing to 15 to
25 kt. patchy fog this afternoon. waves 1 to 3 ft building to
3 to 5 ft. 
.tonight...south winds 15 to 25 kt becoming west 10 to 20 kt.
chance of showers and slight chance of thunderstorms in the
evening, then slight chance of showers and thunderstorms
overnight. patchy fog overnight. waves 3 to 5 ft subsiding to
2 to 4 ft. 
.saturday...northwest winds 10 to 20 kt backing to southwest.
waves 1 to 3 ft. 
.saturday night...southwest winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 2 ft. 
.sunday...southwest winds 10 to 20 kt becoming south 15 to 25 kt.
waves 2 to 4 ft. 
.sunday night...southwest winds 10 to 20 kt veering to northwest
5 to 10 kt. chance of showers. waves 2 to 4 ft. 
.monday...north winds 10 to 20 kt veering to south. chance of
showers and thunderstorms. waves 1 to 3 ft. 
.tuesday...northeast winds 10 to 15 kt becoming north 10 to
20 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 071404
glflm 
expires:202608072115;;772337

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
904 am cdt fri aug 7 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...

patchy marine fog this morning over primarily the southern portion
of the lake may linger into the early afternoon.

otherwise, light southerly winds tonight will increase by friday 
afternoon as a low pressure trough of 29.8 inches reaches lake 
superior. scattered showers and storms are possible friday night 
as an associated cold front crosses lake michigan. west to 
northwest winds behind the front early saturday will quickly 
return to southerly by saturday evening ahead of the next 
approaching low pressure system. an unsettled weather pattern will
set up over the upper great lakes next week where weak waves of 
low pressure will cross the region and produce rounds of 
thunderstorms at times.


lmz080-669-671-673-675-777-779-870-872-874-876-878-072115-
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-
904 am cdt fri aug 7 2026

sheboygan wi to pentwater mi south...

.rest of today...south winds 10 to 15 kt increasing to 15 to
25 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.tonight...south winds 10 to 20 kt becoming southwest. slight
chance of showers and thunderstorms overnight. waves 2 to 4 ft
subsiding to 1 to 3 ft. 
.saturday...west winds 10 to 20 kt becoming north 10 to 15 kt.
waves 1 to 3 ft. 
.saturday night...south winds 10 to 15 kt. waves 1 to 2 ft. 
.sunday...south winds 10 to 20 kt increasing to 15 to 25 kt.
chance of showers in the afternoon. waves 2 to 4 ft. 
.sunday night...south winds 10 to 20 kt becoming southwest 10 to
15 kt. chance of showers and thunderstorms. waves 2 to 4 ft
subsiding to 1 to 3 ft. 
.monday...southwest winds 10 to 20 kt becoming south. showers
likely with a chance of thunderstorms. waves 1 to 3 ft. 
.tuesday...northwest winds 10 to 15 kt. chance of showers. waves
1 to 3 ft.  

$$

fzus63 kmqt 071401
glfls 
expires:202608072000;;772164

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri aug 7 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 passing cold front brings 29.8 inch troughing across the lake 
today and tonight before 29.9 inch ridging returns saturday. while 
some weak 29.8 inch troughing could be seen over lake superior 
saturday night, weak 29.9 inch ridging settles once again over the 
lake sunday and monday. a weak 29.8 inch trough potentially passes 
through sunday evening. the high pressure ridging could increase to 
30.0 inches by tuesday. 




lsz162-072000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt fri aug 7 2026 /901 am cdt fri aug 7 2026/

.rest of today...southwest winds 10 to 20 knots. a chance of
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.tonight...west winds 10 to 20 knots becoming northwest 5 to
15 knots after midnight, then becoming west 10 to 20 knots late.
waves calm to 2 feet. 
.saturday...west winds 10 to 20 knots backing southwest in the
afternoon. waves building to 1 to 3 feet. 
.saturday night...west winds 5 to 15 knots. a slight chance of
thunderstorms through midnight. a chance of showers. waves
subsiding to calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing south by mid
afternoon. waves calm to 2 feet. 
.sunday night...west winds 5 to 15 knots veering northwest after
midnight. waves calm to 2 feet. 
.monday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 
.tuesday...southwest winds 5 to 15 knots veering northwest. waves
calm to 2 feet. 

$$

fzus63 kmqt 071401
glfls 
expires:202608072000;;772165

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri aug 7 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 passing cold front brings 29.8 inch troughing across the lake 
today and tonight before 29.9 inch ridging returns saturday. while 
some weak 29.8 inch troughing could be seen over lake superior 
saturday night, weak 29.9 inch ridging settles once again over the 
lake sunday and monday. a weak 29.8 inch trough potentially passes 
through sunday evening. the high pressure ridging could increase to 
30.0 inches by tuesday. 




lsz263-072000-
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 fri aug 7 2026

.rest of today...southwest winds 10 to 20 knots diminishing to
5 to 15 knots late. a chance of showers by late morning. a chance
of thunderstorms. showers likely by mid afternoon. waves 1 to
3 feet subsiding to calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering northwest after
midnight, then backing west late. a slight chance of showers
through midnight. waves calm to 2 feet. 
.saturday...west winds 5 to 15 knots becoming southwest 15 to
25 knots in the afternoon. waves building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.saturday night...southwest winds 10 to 20 knots becoming west
5 to 15 knots after midnight. a chance of showers. a slight
chance of thunderstorms after midnight. waves subsiding to calm
to 2 feet. 
.sunday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...west winds 10 to 20 knots diminishing to 5 to
15 knots. waves calm to 2 feet. 

$$

fzus63 kmqt 071401
glfls 
expires:202608072000;;772166

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri aug 7 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 passing cold front brings 29.8 inch troughing across the lake 
today and tonight before 29.9 inch ridging returns saturday. while 
some weak 29.8 inch troughing could be seen over lake superior 
saturday night, weak 29.9 inch ridging settles once again over the 
lake sunday and monday. a weak 29.8 inch trough potentially passes 
through sunday evening. the high pressure ridging could increase to 
30.0 inches by tuesday. 




lsz264-072000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt fri aug 7 2026

.rest of today...southwest winds 10 to 20 knots diminishing to
5 to 15 knots late. a chance of showers and thunderstorms. waves
1 to 3 feet subsiding to calm to 2 feet. 
.tonight...west winds 5 to 15 knots veering northwest after
midnight. a slight chance of showers through midnight. waves calm
to 2 feet. 
.saturday...west winds 5 to 15 knots increasing to 10 to 20 knots
in the afternoon, then backing southwest late. waves building to
1 to 3 feet. 
.saturday night...southwest winds 5 to 15 knots veering west
after midnight. a slight chance of showers after midnight. waves
subsiding to calm to 2 feet. 
.sunday...west winds 5 to 15 knots backing southwest by mid
afternoon. waves calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots becoming west less
than 10 knots after midnight. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots backing southwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 071401
glfls 
expires:202608072000;;772167

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri aug 7 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 passing cold front brings 29.8 inch troughing across the lake 
today and tonight before 29.9 inch ridging returns saturday. while 
some weak 29.8 inch troughing could be seen over lake superior 
saturday night, weak 29.9 inch ridging settles once again over the 
lake sunday and monday. a weak 29.8 inch trough potentially passes 
through sunday evening. the high pressure ridging could increase to 
30.0 inches by tuesday. 




lsz265-072000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt fri aug 7 2026

.rest of today...south winds 10 to 20 knots veering west late.
showers likely and a chance of thunderstorms by mid afternoon.
waves calm to 2 feet. 
.tonight...southwest winds 10 to 20 knots veering west after
midnight, then becoming northwest 15 to 25 knots late. a slight
chance of showers and thunderstorms through midnight. waves calm
to 2 feet. 
.saturday...west winds 15 to 25 knots diminishing to 10 to
20 knots late. waves calm to 2 feet. 
.saturday night...southwest winds 10 to 20 knots. a chance of
showers and a slight chance of thunderstorms after midnight.
waves calm to 2 feet. 
.sunday...west winds 10 to 20 knots becoming east 5 to 15 knots
by mid afternoon. a slight chance of showers. waves calm to
2 feet. 
.sunday night...southwest winds 5 to 15 knots. waves calm to
2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots backing south. waves calm to
2 feet. 

$$

fzus63 kmqt 071401
glfls 
expires:202608072000;;772168

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri aug 7 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 passing cold front brings 29.8 inch troughing across the lake 
today and tonight before 29.9 inch ridging returns saturday. while 
some weak 29.8 inch troughing could be seen over lake superior 
saturday night, weak 29.9 inch ridging settles once again over the 
lake sunday and monday. a weak 29.8 inch trough potentially passes 
through sunday evening. the high pressure ridging could increase to 
30.0 inches by tuesday. 




lsz266-072000-
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 fri aug 7 2026

.rest of today...south winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon. a chance of showers and thunderstorms
by mid afternoon. waves 1 to 3 feet subsiding to calm to 2 feet. 
.tonight...southwest winds 10 to 20 knots veering northwest late.
showers likely and a chance of thunderstorms through midnight,
then a slight chance of showers after midnight. waves calm to
2 feet. 
.saturday...northwest winds 10 to 20 knots backing west in the
afternoon, then diminishing to 5 to 15 knots late. waves calm to
2 feet. 
.saturday night...southwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. a chance of showers and a slight
chance of thunderstorms after midnight. waves calm to 2 feet. 
.sunday...west winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. a slight chance of showers. waves calm to
2 feet. 
.sunday night...northeast winds 5 to 15 knots veering southwest
after midnight. waves calm to 2 feet. 
.monday...west winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots backing southwest. waves calm
to 2 feet. 

$$

fzus63 kmqt 071401
glfls 
expires:202608072000;;772169

open lake forecast for lake superior
national weather service marquette mi
1001 am edt fri aug 7 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 passing cold front brings 29.8 inch troughing across the lake 
today and tonight before 29.9 inch ridging returns saturday. while 
some weak 29.8 inch troughing could be seen over lake superior 
saturday night, weak 29.9 inch ridging settles once again over the 
lake sunday and monday. a weak 29.8 inch trough potentially passes 
through sunday evening. the high pressure ridging could increase to 
30.0 inches by tuesday. 




lsz267-072000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt fri aug 7 2026

.rest of today...south winds 10 to 20 knots. a slight chance of
showers and thunderstorms by mid afternoon. waves calm to 2 feet.
.tonight...south winds 10 to 20 knots veering southwest after
midnight, then veering northwest late. a chance of showers and
thunderstorms. waves calm to 2 feet. 
.saturday...northwest winds 10 to 20 knots backing west in the
afternoon. waves calm to 2 feet. 
.saturday night...southwest winds 5 to 15 knots increasing to
10 to 20 knots after midnight. a slight chance of showers after
midnight. waves calm to 2 feet. 
.sunday...west winds 10 to 20 knots diminishing to 5 to 15 knots
by mid afternoon. a slight chance of showers. waves calm to
2 feet. 
.sunday night...north winds 5 to 15 knots. waves calm to 2 feet. 
.monday...northwest winds 5 to 15 knots. waves calm to 2 feet. 
.tuesday...west winds 5 to 15 knots backing southwest. waves calm
to 2 feet. 

$$