fzus63 kdtx 250741
glflh 
expires:202607251545;;565431

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 am edt sat jul 25 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 winds organize out of the southwest between high
pressure and the next low over the plains. thunderstorm chances 
increase sunday and monday ahead of the next low and its attendant
cold front monday night into tuesday. 


lhz361-251545-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
341 am edt sat jul 25 2026

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


$$

fzus63 kdtx 250741
glflh 
expires:202607251545;;565432

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 am edt sat jul 25 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 winds organize out of the southwest between high
pressure and the next low over the plains. thunderstorm chances 
increase sunday and monday ahead of the next low and its attendant
cold front monday night into tuesday. 


lhz362-363-251545-
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-
341 am edt sat jul 25 2026

.today...south winds 5 to 10 knots increasing to 10 to 15 knots
late in the afternoon. waves 2 feet or less building to 2 to
4 feet late in the afternoon. 
.tonight...southeast winds 10 to 15 knots becoming southwest 5 to
10 knots after midnight. waves 2 to 4 feet subsiding to 1 to
3 feet after midnight. 
.sunday...light and variable winds. waves 2 feet or less. 
.sunday night...east winds 5 to 10 knots veering to the south in
the late evening and overnight. a chance of showers. waves 2 feet
or less. 
.monday...southwest winds 5 to 10 knots backing to the southeast
late in the afternoon...then backing to the southeast 5 to
10 knots late in the evening. a chance of showers...then showers
likely and a chance of thunderstorms late in the afternoon. waves
2 feet or less. 
.tuesday...north winds 10 to 15 knots. waves 1 to 3 feet. 
.wednesday...north winds 10 to 15 knots decreasing to 5 to
10 knots. waves 1 to 3 feet. 


$$

fzus63 kdtx 250741
glflh 
expires:202607251545;;565433

open lake forecast for lake huron
national weather service detroit/pontiac mi
341 am edt sat jul 25 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 winds organize out of the southwest between high
pressure and the next low over the plains. thunderstorm chances 
increase sunday and monday ahead of the next low and its attendant
cold front monday night into tuesday. 


lhz462>464-251545-
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-
341 am edt sat jul 25 2026

.today...light and variable winds becoming southeast 5 to
10 knots late in the afternoon. waves 2 feet or less. 
.tonight...southeast winds 5 to 10 knots veering to the southwest
early in the morning. waves 2 feet or less. 
.sunday...southwest winds 5 to 10 knots early in the morning
becoming light and variable. a chance of showers in the
afternoon. waves 2 feet or less. 
.sunday night...light and variable winds becoming southeast 5 to
10 knots by midnight...then veering to the south after midnight.
a chance of showers. waves 2 feet or less. 
.monday...southwest winds 5 to 10 knots backing to the southeast
late in the afternoon...then veering to the west late in the
evening. a chance of showers. thunderstorms likely. rain showers
likely late in the afternoon. waves 2 feet or less. 
.tuesday...north winds 10 to 15 knots increasing to 15 to
20 knots with gusts to around 30 knots until early evening...then
decreasing to 10 to 15 knots by midnight. a chance of showers and
thunderstorms early in the morning. waves 1 to 3 feet building to
3 to 5 feet. 
.wednesday...north winds 10 to 15 knots decreasing to 5 to
10 knots by midnight. waves 2 to 4 feet subsiding to 1 to 3 feet
by midnight. 


$$

fzus63 kmkx 250731
glflm 
expires:202607251530;;565123

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
231 am cdt sat jul 25 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...

gusty south to southwest winds are expected across all of lake 
michigan through today, as low pressure around 29.5 inches 
approaches from the northern plains. gusts up to 30 knots are 
expected over the north half of the lake. 

a frontal boundary will then stall mainly over wisconsin and lake
michigan tonight through most of monday. this will result in 
increasing thunderstorm chances, with severe storms possible. very
warm, moist and unstable air flowing over the relatively cool 
waters may cause patchy dense fog over the lake early next week. 

northerly winds are expected monday night through wednesday, as 
high pressure around 29.9 inches builds over the upper great 
lakes. look for southerly winds and more unsettled weather to 
resume thursday into next weekend.


lmz261-362-364-366-563-565-567-868-251530-
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-
231 am cdt sat jul 25 2026

sheboygan wi to pentwater mi north...

.today...southwest winds 15 to 25 kt becoming south to 30 kt.
waves 3 to 5 ft. 
.tonight...south winds 15 to 25 kt becoming southwest 10 to 20 kt
late in the evening, then diminishing to 10 to 15 kt after
midnight becoming southwest 10 to 15 kt late. slight chance of
showers and thunderstorms in the evening, then slight chance of
showers overnight. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.sunday...southwest winds 5 to 10 kt becoming south 10 to 20 kt.
chance of showers and thunderstorms in the afternoon. waves 1 to
3 ft. 
.sunday night...south winds 10 to 20 kt becoming southwest.
showers likely. waves 1 to 3 ft. 
.monday...southwest winds 10 to 20 kt becoming south. chance of
showers. waves 1 to 3 ft. 
.monday night...north winds 10 to 20 kt increasing to 15 to
25 kt. waves 1 to 3 ft. 
.tuesday...north winds 15 to 25 kt increasing to 30 kt. waves
2 to 4 ft. 
.wednesday...north winds 10 to 15 kt increasing to 15 to 25 kt.
waves 1 to 2 ft.  

$$

fzus63 kmkx 250731
glflm 
expires:202607251530;;565124

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
231 am cdt sat jul 25 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...

gusty south to southwest winds are expected across all of lake 
michigan through today, as low pressure around 29.5 inches 
approaches from the northern plains. gusts up to 30 knots are 
expected over the north half of the lake. 

a frontal boundary will then stall mainly over wisconsin and lake
michigan tonight through most of monday. this will result in 
increasing thunderstorm chances, with severe storms possible. very
warm, moist and unstable air flowing over the relatively cool 
waters may cause patchy dense fog over the lake early next week. 

northerly winds are expected monday night through wednesday, as 
high pressure around 29.9 inches builds over the upper great 
lakes. look for southerly winds and more unsettled weather to 
resume thursday into next weekend.


lmz080-669-671-673-675-777-779-870-872-874-876-878-251530-
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-
231 am cdt sat jul 25 2026

sheboygan wi to pentwater mi south...

.today...southwest winds 10 to 20 kt becoming south 15 to 25 kt.
waves 3 to 5 ft. 
.tonight...south winds 10 to 20 kt becoming southwest 10 to
15 kt. slight chance of showers overnight. waves 3 to 5 ft
subsiding to 2 to 4 ft. 
.sunday...west winds 10 to 15 kt becoming south 10 to 20 kt.
waves 1 to 3 ft. 
.sunday night...south winds 10 to 20 kt becoming southwest.
chance of showers and thunderstorms in the evening, then chance
of showers overnight. waves 1 to 3 ft. 
.monday...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
showers likely in the morning, then chance of showers and
thunderstorms in the afternoon. waves 2 to 4 ft. 
.monday night...west winds 10 to 20 kt becoming north 15 to
25 kt. waves 3 to 5 ft. 
.tuesday...north winds 15 to 25 kt increasing to 30 kt. waves
4 to 6 ft occasionally to 8 ft. 
.wednesday...north winds 10 to 15 kt increasing to 15 to 25 kt.
waves 1 to 3 ft.  

$$

fzus63 kmqt 250801
glfls 
expires:202607252000;;566313

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jul 25 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... 

troughing around 29.8 inches persists over lake superior through 
sunday morning, deepening to 29.8 inches by sunday night. a 29.6 to 
29.7 inch clipper low moves into the upper great lakes or upper 
midwest by monday before departing east towards the st. lawrence 
seaway on tuesday. behind the clipper, weak ridging of 29.9 to 30.0 
inches returns to lake superior tuesday into wednesday.




lsz162-252000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
400 am edt sat jul 25 2026 /300 am cdt sat jul 25 2026/

.early this morning...southwest winds 15 to 25 knots. a chance of
showers and thunderstorms. waves 3 to 5 feet occasionally to
7 feet subsiding to 2 to 4 feet. 
.today...southwest winds 10 to 20 knots diminishing to 5 to
15 knots late. waves subsiding to calm to 2 feet. 
.tonight...south winds 5 to 15 knots becoming north less than
10 knots after midnight. a slight chance of showers and
thunderstorms after midnight. waves calm to 2 feet. 
.sunday...east winds 5 to 15 knots backing northeast late. a
slight chance of showers through early afternoon. waves calm to
2 feet. 
.sunday night...east winds 5 to 15 knots backing northeast after
midnight. a chance of showers and a slight chance of
thunderstorms. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots. a chance of showers
through early afternoon. waves calm to 2 feet. 
.monday night...northeast winds 5 to 15 knots becoming north less
than 10 knots after midnight. waves calm to 2 feet. 
.tuesday...east winds 5 to 15 knots backing northeast. waves calm
to 2 feet. 
.wednesday...northeast winds 5 to 15 knots. waves calm to 2 feet.

$$

fzus63 kmqt 250801
glfls 
expires:202607252000;;566314

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jul 25 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... 

troughing around 29.8 inches persists over lake superior through 
sunday morning, deepening to 29.8 inches by sunday night. a 29.6 to 
29.7 inch clipper low moves into the upper great lakes or upper 
midwest by monday before departing east towards the st. lawrence 
seaway on tuesday. behind the clipper, weak ridging of 29.9 to 30.0 
inches returns to lake superior tuesday into wednesday.




lsz263-252000-
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 sat jul 25 2026

.early this morning...southwest winds 15 to 25 knots. a chance of
showers and thunderstorms. waves 3 to 6 feet occasionally to
8 feet. 
.today...southwest winds 15 to 25 knots diminishing to 5 to
15 knots. a chance of showers through early afternoon. waves
subsiding to calm to 2 feet. 
.tonight...southwest winds 5 to 15 knots diminishing to less than
10 knots after midnight, then backing south late. a slight chance
of showers and thunderstorms after midnight. waves calm to
2 feet. 
.sunday...south winds less than 10 knots becoming east 5 to
15 knots in the afternoon, then backing northeast late. a chance
of showers through early afternoon. waves calm to 2 feet. 
.sunday night...northeast winds 5 to 15 knots. a chance of
showers and a slight chance of thunderstorms. waves calm to
2 feet. 
.monday...northeast winds 5 to 15 knots. a chance of showers and
thunderstorms. waves calm to 2 feet. 
.monday night...northeast winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.tuesday...northeast winds less than 10 knots. waves calm to
2 feet. 
.wednesday...east winds 5 to 15 knots veering southeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202607252000;;566315

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jul 25 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... 

troughing around 29.8 inches persists over lake superior through 
sunday morning, deepening to 29.8 inches by sunday night. a 29.6 to 
29.7 inch clipper low moves into the upper great lakes or upper 
midwest by monday before departing east towards the st. lawrence 
seaway on tuesday. behind the clipper, weak ridging of 29.9 to 30.0 
inches returns to lake superior tuesday into wednesday.




lsz264-252000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
400 am edt sat jul 25 2026

.early this morning...southwest winds 15 to 25 knots. showers
likely and a chance of thunderstorms. waves 3 to 6 feet
occasionally to 8 feet. 
.today...southwest winds 15 to 25 knots diminishing to 5 to
15 knots. a chance of showers and a slight chance of
thunderstorms through early afternoon. waves subsiding to 1 to
3 feet. 
.tonight...southwest winds 5 to 15 knots becoming south less than
10 knots after midnight. waves subsiding to calm to 2 feet. 
.sunday...east winds less than 10 knots becoming southeast 5 to
15 knots in the afternoon, then backing northeast late. a slight
chance of showers through early afternoon. waves calm to 2 feet. 
.sunday night...northeast winds less than 10 knots increasing to
5 to 15 knots after midnight. a chance of showers. a slight
chance of thunderstorms after midnight. waves calm to 2 feet. 
.monday...northeast winds 5 to 15 knots. a chance of showers.
waves calm to 2 feet. 
.monday night...north winds 5 to 15 knots diminishing to less
than 10 knots after midnight. waves calm to 2 feet. 
.tuesday...north winds less than 10 knots veering east. waves
calm to 2 feet. 
.wednesday...southeast winds less than 10 knots. waves calm to
2 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202607252000;;566316

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jul 25 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... 

troughing around 29.8 inches persists over lake superior through 
sunday morning, deepening to 29.8 inches by sunday night. a 29.6 to 
29.7 inch clipper low moves into the upper great lakes or upper 
midwest by monday before departing east towards the st. lawrence 
seaway on tuesday. behind the clipper, weak ridging of 29.9 to 30.0 
inches returns to lake superior tuesday into wednesday.




lsz265-252000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
400 am edt sat jul 25 2026

.early this morning...southwest winds 15 to 25 knots. a chance of
showers and thunderstorms. waves 2 to 4 feet. 
.today...southwest winds 10 to 20 knots becoming west 5 to
15 knots late. a slight chance of thunderstorms through early
afternoon. a chance of showers. waves subsiding to calm to
2 feet. 
.tonight...south winds 5 to 15 knots. waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots increasing to 10 to
20 knots in the afternoon, then backing east late. a slight
chance of showers. a slight chance of thunderstorms by mid
afternoon. waves calm to 2 feet. 
.sunday night...north winds 5 to 15 knots. a chance of showers
and a slight chance of thunderstorms. waves calm to 2 feet. 
.monday...northeast winds 10 to 20 knots. a chance of showers.
waves calm to 2 feet. 
.monday night...north winds 10 to 20 knots diminishing to 5 to
15 knots after midnight. waves calm to 2 feet. 
.tuesday...north winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...east winds 5 to 15 knots veering southeast. waves
calm to 2 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202607252000;;566317

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jul 25 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... 

troughing around 29.8 inches persists over lake superior through 
sunday morning, deepening to 29.8 inches by sunday night. a 29.6 to 
29.7 inch clipper low moves into the upper great lakes or upper 
midwest by monday before departing east towards the st. lawrence 
seaway on tuesday. behind the clipper, weak ridging of 29.9 to 30.0 
inches returns to lake superior tuesday into wednesday.




lsz266-252000-
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 sat jul 25 2026

.early this morning...south winds 15 to 25 knots. a chance of
showers and thunderstorms. waves 3 to 6 feet occasionally to
8 feet. 
.today...southwest winds 15 to 25 knots diminishing to 10 to
20 knots in the afternoon, then becoming west 5 to 15 knots late.
a slight chance of thunderstorms through early afternoon. a
chance of showers. waves subsiding to 1 to 3 feet. 
.tonight...south winds 5 to 15 knots. waves subsiding to calm to
2 feet. 
.sunday...south winds 5 to 15 knots backing southeast in the
afternoon. a slight chance of showers and thunderstorms by mid
afternoon. waves calm to 2 feet. 
.sunday night...southwest winds 5 to 15 knots veering north after
midnight. a chance of showers and a slight chance of
thunderstorms. waves calm to 2 feet. 
.monday...north winds 10 to 20 knots. a chance of showers and
thunderstorms. waves calm to 2 feet. 
.monday night...north winds 10 to 20 knots. waves calm to 2 feet.
.tuesday...north winds 5 to 15 knots. waves calm to 2 feet. 
.wednesday...northeast winds 5 to 15 knots veering south. waves
calm to 2 feet. 

$$

fzus63 kmqt 250801
glfls 
expires:202607252000;;566318

open lake forecast for lake superior
national weather service marquette mi
400 am edt sat jul 25 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... 

troughing around 29.8 inches persists over lake superior through 
sunday morning, deepening to 29.8 inches by sunday night. a 29.6 to 
29.7 inch clipper low moves into the upper great lakes or upper 
midwest by monday before departing east towards the st. lawrence 
seaway on tuesday. behind the clipper, weak ridging of 29.9 to 30.0 
inches returns to lake superior tuesday into wednesday.




lsz267-252000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
400 am edt sat jul 25 2026

.early this morning...south winds 20 to 30 knots. a chance of
showers and a slight chance of thunderstorms. waves 3 to 5 feet
occasionally to 7 feet. 
.today...south winds 15 to 25 knots becoming southwest 10 to
20 knots in the afternoon, then diminishing to 5 to 15 knots
late. a slight chance of thunderstorms through early afternoon. a
chance of showers. waves subsiding to calm to 2 feet. 
.tonight...south winds 5 to 15 knots becoming southwest less than
10 knots after midnight, then backing southeast late. a slight
chance of showers through midnight. waves calm to 2 feet. 
.sunday...southeast winds 5 to 15 knots. a slight chance of
showers and thunderstorms by mid afternoon. waves calm to 2 feet.
.sunday night...south winds 10 to 20 knots becoming west 5 to
15 knots after midnight. a chance of showers and thunderstorms.
waves calm to 2 feet. 
.monday...north winds 5 to 15 knots increasing to 10 to 20 knots
by mid afternoon. a chance of showers. a chance of thunderstorms
by mid afternoon. waves calm to 2 feet. 
.monday night...north winds 10 to 20 knots. waves calm to 2 feet.
.tuesday...northwest winds 10 to 20 knots becoming north 5 to
15 knots. waves calm to 2 feet. 
.wednesday...northwest winds 5 to 15 knots backing south. waves
calm to 2 feet. 

$$