fzus63 kdtx 161339
glflh 
expires:202509162145;;079981

open lake forecast for lake huron
national weather service detroit/pontiac mi
939 am edt tue sep 16 2025

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, 30.30 inches, holds over the eastern
great lakes through the middle of the week, which will continue
to support dry weather and light winds. a second high pressure
system will then drop in from the central canadian provinces,
centering over eastern ontario by the end of the week.


lhz361-362-162145-
lake huron from 5nm east of mackinac bridge to presque isle lt
beyond 5 nm off shore-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
939 am edt tue sep 16 2025

.rest of today...light and variable winds. waves 2 feet or less. 
.tonight...light and variable winds. waves 2 feet or less. 
.wednesday...light and variable winds. waves 2 feet or less. 
.wednesday night...light and variable winds. waves 2 feet or
less. 
.thursday...northwest winds 5 to 10 knots veering to the north
late in the afternoon. waves 2 feet or less. 
.friday...northeast winds 10 to 15 knots becoming east 5 to
10 knots early in the evening...then increasing to 10 to 15 knots
in the late evening and early morning. waves 2 to 4 feet. 
.saturday...east winds 15 to 20 knots decreasing to 10 to
15 knots until early morning. waves 3 to 5 feet. 


$$

fzus63 kdtx 161339
glflh 
expires:202509162145;;079982

open lake forecast for lake huron
national weather service detroit/pontiac mi
939 am edt tue sep 16 2025

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, 30.30 inches, holds over the eastern
great lakes through the middle of the week, which will continue
to support dry weather and light winds. a second high pressure
system will then drop in from the central canadian provinces,
centering over eastern ontario by the end of the week.


lhz363-462>464-162145-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
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-
939 am edt tue sep 16 2025

.rest of today...light and variable winds. waves 2 feet or less. 
.tonight...north winds 5 to 10 knots early in the evening
becoming light and variable. waves 2 feet or less. 
.wednesday...light and variable winds. waves 2 feet or less. 
.wednesday night...light and variable winds. waves 2 feet or
less. 
.thursday...light and variable winds becoming north 5 to
10 knots. waves 2 feet or less. 
.friday...northeast winds 10 to 15 knots increasing to 15 to
20 knots until early morning. waves 2 to 4 feet. 
.saturday...east winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet in the late evening and early morning. 


$$

fzus63 kmkx 161355
glflm 
expires:202509162115;;080458

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
855 am cdt tue sep 16 2025

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...

the back edge of the high pressure centered over quebec will 
meander around and just east of lake michigan through wednesday. 
expect light southeasterly winds under this pattern as a weak low
pressure around 29.7 inches continues to slowly lift into the 
hudson bay region through today. given the warm pattern and 
lighter winds, cannot rule out a few areas of fog each night 
through midweek. winds are then expected to increase a bit and 
shift more easterly for the second half of the week as low 
pressure develops across the central plains. will see a mix of 
east to northeasterly winds later thursday into friday with the 
warm front stretched across the lake as a the low pressure is 
progged to lift northward into the upper midwest.



lmz261-362-364-366-563-565-567-868-162115-
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-
855 am cdt tue sep 16 2025

sheboygan wi to pentwater mi north...

.rest of today...south winds 5 to 10 kt increasing to 10 to
15 kt. waves 1 ft or less. 
.tonight...southeast winds 5 to 10 kt becoming south. waves 1 ft
or less. 
.wednesday...southwest winds 5 to 10 kt increasing to 10 to
15 kt. waves 1 to 2 ft. 
.wednesday night...southwest winds 5 to 10 kt veering to north.
waves 1 ft or less. 
.thursday...northeast winds 5 to 10 kt becoming north 10 to
15 kt. waves 1 to 2 ft. 
.thursday night...northeast winds 10 to 15 kt. waves 1 to 3 ft. 
.friday...east winds 10 to 20 kt becoming northeast. waves 1 to
3 ft. 
.saturday...southeast winds 10 to 20 kt. waves 3 to 5 ft.  

$$

fzus63 kmkx 161355
glflm 
expires:202509162115;;080459

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
855 am cdt tue sep 16 2025

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...

the back edge of the high pressure centered over quebec will 
meander around and just east of lake michigan through wednesday. 
expect light southeasterly winds under this pattern as a weak low
pressure around 29.7 inches continues to slowly lift into the 
hudson bay region through today. given the warm pattern and 
lighter winds, cannot rule out a few areas of fog each night 
through midweek. winds are then expected to increase a bit and 
shift more easterly for the second half of the week as low 
pressure develops across the central plains. will see a mix of 
east to northeasterly winds later thursday into friday with the 
warm front stretched across the lake as a the low pressure is 
progged to lift northward into the upper midwest.



lmz080-669-671-673-675-777-779-870-872-874-876-878-162115-
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-
855 am cdt tue sep 16 2025

sheboygan wi to pentwater mi south...

.rest of today...east winds 5 to 10 kt backing to north. waves
1 to 2 ft. 
.tonight...north winds 5 to 10 kt veering to east. waves 1 ft or
less. 
.wednesday...southeast winds less than 10 kt backing to north.
waves 1 ft or less. 
.wednesday night...east winds 5 to 10 kt becoming southeast.
waves nearly calm. 
.thursday...east winds 5 to 10 kt backing to north. waves 1 to
2 ft. 
.thursday night...northeast winds 10 to 15 kt. waves 1 to 3 ft. 
.friday...east winds 10 to 15 kt becoming northeast. waves 1 to
3 ft. 
.saturday...southeast winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft.  

$$

fzus63 kmqt 161401
glfls 
expires:202509162000;;080874

open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue sep 16 2025

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 30.2 inch high shifting south into new england will maintain 30.1 
inch ridging over the lake today. a 29.7 inch low moving through far 
northern ontario into the hudson bay area tonight will bring 
troughing of 30.0 inches back to lake superior tuesday night through 
wednesday, before a 30.3 inch high stretching from the canadian 
prairies to northern ontario brings 30.1 inch ridging back over lake 
superior wednesday night into thursday morning. ridging is expected 
to strengthen to 30.3 inches on friday as the high digs through 
northern ontario towards the st. lawrence seaway. the ridge will 
weaken to 30.1 inches on saturday as the high pressure pushes away 
from the area, into the northeastern u.s. troughing then begins to 
spread over the lake sunday into the beginning of next week as low 
pressure deepens over the canadian prairie to around 29.5 inches.



lsz162-162000-
lake superior west of a line from saxon harbor wi to grand
portage mn beyond 5nm-
1001 am edt tue sep 16 2025 /901 am cdt tue sep 16 2025/

.rest of today...south winds 5 to 15 knots backing southeast
late. waves calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering west late. patchy
fog. a slight chance of showers and thunderstorms. waves calm to
2 feet. 
.wednesday...west winds 5 to 15 knots backing southwest late. a
slight chance of showers. a slight chance of thunderstorms by mid
afternoon. waves calm to 2 feet. 
.wednesday night...northeast winds 5 to 15 knots. a slight chance
of showers and thunderstorms. waves calm to 2 feet. 
.thursday...northeast winds 10 to 20 knots increasing to 15 to
25 knots by mid afternoon. a slight chance of showers. a slight
chance of thunderstorms by mid afternoon. waves building to 2 to
4 feet. 
.thursday night...northeast winds 10 to 20 knots. waves subsiding
to 1 to 3 feet. 
.friday...east winds 15 to 25 knots diminishing to 10 to
20 knots. a chance of showers. waves building to 3 to 5 feet
occasionally to 7 feet, then subsiding to 1 to 3 feet. 
.saturday...east winds 10 to 20 knots becoming south 5 to
15 knots. a chance of showers. waves subsiding to calm to 2 feet.

$$

fzus63 kmqt 161401
glfls 
expires:202509162000;;080875

open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue sep 16 2025

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 30.2 inch high shifting south into new england will maintain 30.1 
inch ridging over the lake today. a 29.7 inch low moving through far 
northern ontario into the hudson bay area tonight will bring 
troughing of 30.0 inches back to lake superior tuesday night through 
wednesday, before a 30.3 inch high stretching from the canadian 
prairies to northern ontario brings 30.1 inch ridging back over lake 
superior wednesday night into thursday morning. ridging is expected 
to strengthen to 30.3 inches on friday as the high digs through 
northern ontario towards the st. lawrence seaway. the ridge will 
weaken to 30.1 inches on saturday as the high pressure pushes away 
from the area, into the northeastern u.s. troughing then begins to 
spread over the lake sunday into the beginning of next week as low 
pressure deepens over the canadian prairie to around 29.5 inches.



lsz263-162000-
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 tue sep 16 2025

.rest of today...south winds 5 to 15 knots. waves calm to 2 feet.
.tonight...south winds 5 to 15 knots veering southwest after
midnight. a slight chance of showers and thunderstorms. waves
building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots. a slight chance of
showers. a slight chance of thunderstorms by mid afternoon. waves
calm to 2 feet. 
.wednesday night...northeast winds 5 to 15 knots increasing to
10 to 20 knots after midnight. a slight chance of showers. waves
calm to 2 feet. 
.thursday...northeast winds 10 to 20 knots. a slight chance of
showers. waves building to 2 to 4 feet, then subsiding to 1 to
3 feet. 
.thursday night...east winds 10 to 20 knots. waves subsiding to
calm to 2 feet, then building to 1 to 3 feet. 
.friday...east winds 10 to 20 knots. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.saturday...southeast winds 5 to 15 knots veering south. a chance
of showers. waves subsiding to calm to 2 feet. 

$$

fzus63 kmqt 161401
glfls 
expires:202509162000;;080876

open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue sep 16 2025

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 30.2 inch high shifting south into new england will maintain 30.1 
inch ridging over the lake today. a 29.7 inch low moving through far 
northern ontario into the hudson bay area tonight will bring 
troughing of 30.0 inches back to lake superior tuesday night through 
wednesday, before a 30.3 inch high stretching from the canadian 
prairies to northern ontario brings 30.1 inch ridging back over lake 
superior wednesday night into thursday morning. ridging is expected 
to strengthen to 30.3 inches on friday as the high digs through 
northern ontario towards the st. lawrence seaway. the ridge will 
weaken to 30.1 inches on saturday as the high pressure pushes away 
from the area, into the northeastern u.s. troughing then begins to 
spread over the lake sunday into the beginning of next week as low 
pressure deepens over the canadian prairie to around 29.5 inches.



lsz264-162000-
lake superior from upper entrance to portage canal to manitou
island mi 5nm off shore to the us/canadian border-
1001 am edt tue sep 16 2025

.rest of today...south winds 5 to 15 knots. waves 1 to 3 feet
subsiding to calm to 2 feet. 
.tonight...south winds 5 to 15 knots veering west late. a slight
chance of showers and thunderstorms. patchy fog after midnight.
waves building to 1 to 3 feet, then subsiding to calm to 2 feet. 
.wednesday...west winds 5 to 15 knots. patchy fog through early
afternoon. a slight chance of showers through early afternoon.
waves calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots veering northeast
after midnight. waves calm to 2 feet. 
.thursday...northeast winds 10 to 20 knots. waves building to
1 to 3 feet, then subsiding to calm to 2 feet. 
.thursday night...northeast winds 5 to 15 knots veering east
after midnight. waves building to 1 to 3 feet. 
.friday...east winds 10 to 20 knots veering southeast. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.saturday...southeast winds 10 to 20 knots diminishing to 5 to
15 knots. a chance of showers. waves building to 2 to 4 feet,
then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 161401
glfls 
expires:202509162000;;080877

open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue sep 16 2025

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 30.2 inch high shifting south into new england will maintain 30.1 
inch ridging over the lake today. a 29.7 inch low moving through far 
northern ontario into the hudson bay area tonight will bring 
troughing of 30.0 inches back to lake superior tuesday night through 
wednesday, before a 30.3 inch high stretching from the canadian 
prairies to northern ontario brings 30.1 inch ridging back over lake 
superior wednesday night into thursday morning. ridging is expected 
to strengthen to 30.3 inches on friday as the high digs through 
northern ontario towards the st. lawrence seaway. the ridge will 
weaken to 30.1 inches on saturday as the high pressure pushes away 
from the area, into the northeastern u.s. troughing then begins to 
spread over the lake sunday into the beginning of next week as low 
pressure deepens over the canadian prairie to around 29.5 inches.



lsz265-162000-
lake superior west of line from manitou island to marquette mi
beyond 5nm from shore-
1001 am edt tue sep 16 2025

.rest of today...south winds 10 to 20 knots backing southeast in
the afternoon. waves calm to 2 feet. 
.tonight...south winds 10 to 20 knots veering southwest after
midnight, then diminishing to 5 to 15 knots late. a slight chance
of showers and thunderstorms after midnight. waves calm to
2 feet. 
.wednesday...west winds 5 to 15 knots veering north late. a
slight chance of showers and thunderstorms. waves calm to 2 feet.
.wednesday night...north winds 5 to 15 knots. a slight chance of
showers. waves calm to 2 feet. 
.thursday...northeast winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...northeast winds 5 to 15 knots becoming east
10 to 20 knots after midnight. waves calm to 2 feet. 
.friday...east winds 10 to 20 knots veering southeast. waves calm
to 2 feet. 
.saturday...southeast winds 15 to 25 knots diminishing to 10 to
20 knots. a chance of showers. waves calm to 2 feet. 

$$

fzus63 kmqt 161401
glfls 
expires:202509162000;;080878

open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue sep 16 2025

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 30.2 inch high shifting south into new england will maintain 30.1 
inch ridging over the lake today. a 29.7 inch low moving through far 
northern ontario into the hudson bay area tonight will bring 
troughing of 30.0 inches back to lake superior tuesday night through 
wednesday, before a 30.3 inch high stretching from the canadian 
prairies to northern ontario brings 30.1 inch ridging back over lake 
superior wednesday night into thursday morning. ridging is expected 
to strengthen to 30.3 inches on friday as the high digs through 
northern ontario towards the st. lawrence seaway. the ridge will 
weaken to 30.1 inches on saturday as the high pressure pushes away 
from the area, into the northeastern u.s. troughing then begins to 
spread over the lake sunday into the beginning of next week as low 
pressure deepens over the canadian prairie to around 29.5 inches.



lsz266-162000-
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 tue sep 16 2025

.rest of today...south winds 10 to 20 knots. waves 1 to 3 feet
subsiding to calm to 2 feet. 
.tonight...south winds 10 to 20 knots becoming southwest 5 to
15 knots late. patchy fog after midnight. a slight chance of
showers and thunderstorms after midnight. waves building to 2 to
4 feet, then subsiding to 1 to 3 feet. 
.wednesday...southwest winds 5 to 15 knots veering northwest
late. patchy fog through early afternoon. a slight chance of
showers and thunderstorms. waves subsiding to calm to 2 feet. 
.wednesday night...north winds 5 to 15 knots. a slight chance of
showers through midnight. waves calm to 2 feet. 
.thursday...north winds 5 to 15 knots increasing to 10 to
20 knots by mid afternoon. waves calm to 2 feet. 
.thursday night...north winds 10 to 20 knots becoming east 5 to
15 knots after midnight. waves building to 1 to 3 feet. 
.friday...east winds 10 to 20 knots veering southeast. waves
subsiding to calm to 2 feet, then building to 1 to 3 feet. 
.saturday...southeast winds 10 to 20 knots. a chance of showers.
waves building to 2 to 4 feet, then subsiding to 1 to 3 feet. 

$$

fzus63 kmqt 161401
glfls 
expires:202509162000;;080879

open lake forecast for lake superior
national weather service marquette mi
1001 am edt tue sep 16 2025

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 30.2 inch high shifting south into new england will maintain 30.1 
inch ridging over the lake today. a 29.7 inch low moving through far 
northern ontario into the hudson bay area tonight will bring 
troughing of 30.0 inches back to lake superior tuesday night through 
wednesday, before a 30.3 inch high stretching from the canadian 
prairies to northern ontario brings 30.1 inch ridging back over lake 
superior wednesday night into thursday morning. ridging is expected 
to strengthen to 30.3 inches on friday as the high digs through 
northern ontario towards the st. lawrence seaway. the ridge will 
weaken to 30.1 inches on saturday as the high pressure pushes away 
from the area, into the northeastern u.s. troughing then begins to 
spread over the lake sunday into the beginning of next week as low 
pressure deepens over the canadian prairie to around 29.5 inches.



lsz267-162000-
lake superior from grand marais mi to whitefish point mi 5nm off
shore to the us/canadian border-
1001 am edt tue sep 16 2025

.rest of today...southeast winds 10 to 20 knots. waves calm to
2 feet. 
.tonight...south winds 10 to 20 knots. waves building to 1 to
3 feet, then subsiding to calm to 2 feet. 
.wednesday...southwest winds 10 to 20 knots diminishing to 5 to
15 knots in the afternoon, then veering west late. a slight
chance of showers and thunderstorms. waves calm to 2 feet. 
.wednesday night...northwest winds 5 to 15 knots becoming north
10 to 20 knots after midnight. waves calm to 2 feet. 
.thursday...north winds 10 to 20 knots. waves calm to 2 feet. 
.thursday night...north winds 10 to 20 knots veering northeast
after midnight. waves calm to 2 feet. 
.friday...east winds 10 to 20 knots veering southeast. waves
building to 1 to 3 feet. 
.saturday...southeast winds 15 to 25 knots. a chance of showers.
waves 1 to 3 feet. 

$$