fzus63 kmkx 231912
glflm 
expires:202610240315;;067079

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
212 pm cdt fri oct 23 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...

30.4 inch high pressure is centered over quebec this afternoon, 
with 29.4 inch low pressure positioned over northeastern montana.
positioning of these surface features is resulting in generally 
south to southeasterly winds across the waters. areas of fog, some
of which have been dense, will linger through the first half of 
the afternoon. based on observational trends, have maintained the 
marine dense fog advisory across portions of the waters through 3 
pm cdt, and will be monitoring for additional adjustments. 
expecting fog to fully dissipate by early evening at the latest. 
aforementioned area of low pressure will progress toward lake 
winnipeg tonight, continuing on toward the hudson bay by saturday 
evening as it deepens to near 29.2 inches. progression of the low
will maintain generally southerly flow across the waters, with 
gusts between 25-30 knots possible over the northern half of the 
lake saturday afternoon and night. can't rule out an isolated gust
approaching gale force during this time frame, with conditions 
not expected to be widespread enough for headlines.

winds will trend southwesterly while steadily weakening ahead of an 
approaching cold front on sunday. currently expecting the front to 
move south across lake michigan late sunday afternoon into sunday 
evening, bringing a breezy northeast wind shift. gales are not 
anticipated during the frontal passage, with any isolated rain 
showers expected to remain over the far northern part of the lake. 
breezy northeast winds will continue through monday as 30.7 inch 
high pressure slides into ontario from the canadian great plains. 
winds will trend easterly and eventually southerly tuesday into 
the middle of next week as the aforementioned high shifts into the
northeastern united states. widespread rain chances return 
wednesday into friday.


lmz669-671-673-675-240315-
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-
212 pm cdt fri oct 23 2026

sheboygan wi to pentwater mi south to winthrop harbor il to south
haven mi...

...dense fog advisory in effect until 3 pm cdt this afternoon...

.tonight...southeast winds 5 to 10 kt becoming south 10 to 15 kt.
patchy fog. waves 1 to 3 ft. 
.saturday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.saturday night...south winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.sunday...south winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday night...southwest winds 10 to 15 kt veering to north
10 to 20 kt. waves 1 to 3 ft. 
.monday...northeast winds 10 to 20 kt increasing to 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.monday night...northeast winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.tuesday...east winds 10 to 20 kt. waves 3 to 5 ft. 
.wednesday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft.  

$$

fzus63 kmkx 231912
glflm 
expires:202610240315;;067078

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
212 pm cdt fri oct 23 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...

30.4 inch high pressure is centered over quebec this afternoon, 
with 29.4 inch low pressure positioned over northeastern montana.
positioning of these surface features is resulting in generally 
south to southeasterly winds across the waters. areas of fog, some
of which have been dense, will linger through the first half of 
the afternoon. based on observational trends, have maintained the 
marine dense fog advisory across portions of the waters through 3 
pm cdt, and will be monitoring for additional adjustments. 
expecting fog to fully dissipate by early evening at the latest. 
aforementioned area of low pressure will progress toward lake 
winnipeg tonight, continuing on toward the hudson bay by saturday 
evening as it deepens to near 29.2 inches. progression of the low
will maintain generally southerly flow across the waters, with 
gusts between 25-30 knots possible over the northern half of the 
lake saturday afternoon and night. can't rule out an isolated gust
approaching gale force during this time frame, with conditions 
not expected to be widespread enough for headlines.

winds will trend southwesterly while steadily weakening ahead of an 
approaching cold front on sunday. currently expecting the front to 
move south across lake michigan late sunday afternoon into sunday 
evening, bringing a breezy northeast wind shift. gales are not 
anticipated during the frontal passage, with any isolated rain 
showers expected to remain over the far northern part of the lake. 
breezy northeast winds will continue through monday as 30.7 inch 
high pressure slides into ontario from the canadian great plains. 
winds will trend easterly and eventually southerly tuesday into 
the middle of next week as the aforementioned high shifts into the
northeastern united states. widespread rain chances return 
wednesday into friday.


lmz261-362-364-366-563-565-567-868-240315-
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-
212 pm cdt fri oct 23 2026

sheboygan wi to pentwater mi north...

...dense fog advisory in effect until 3 pm cdt this afternoon...

.tonight...south winds 10 to 15 kt. patchy fog. waves 1 to 3 ft. 
.saturday...south winds 10 to 20 kt increasing to 30 kt. patchy
fog in the morning. waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft. 
.saturday night...south winds to 30 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.sunday...southwest winds 15 to 25 kt becoming west 10 to 20 kt.
waves 3 to 5 ft subsiding to 2 to 4 ft. 
.sunday night...north winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft. 
.monday...north winds 10 to 20 kt. waves 3 to 5 ft. 
.monday night...northeast winds 15 to 25 kt diminishing to 10 to
20 kt. waves 3 to 5 ft. 
.tuesday...east winds 10 to 20 kt. waves 2 to 4 ft. 
.wednesday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft.  

$$

fzus63 kmkx 231912
glflm 
expires:202610240315;;067080

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
212 pm cdt fri oct 23 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...

30.4 inch high pressure is centered over quebec this afternoon, 
with 29.4 inch low pressure positioned over northeastern montana.
positioning of these surface features is resulting in generally 
south to southeasterly winds across the waters. areas of fog, some
of which have been dense, will linger through the first half of 
the afternoon. based on observational trends, have maintained the 
marine dense fog advisory across portions of the waters through 3 
pm cdt, and will be monitoring for additional adjustments. 
expecting fog to fully dissipate by early evening at the latest. 
aforementioned area of low pressure will progress toward lake 
winnipeg tonight, continuing on toward the hudson bay by saturday 
evening as it deepens to near 29.2 inches. progression of the low
will maintain generally southerly flow across the waters, with 
gusts between 25-30 knots possible over the northern half of the 
lake saturday afternoon and night. can't rule out an isolated gust
approaching gale force during this time frame, with conditions 
not expected to be widespread enough for headlines.

winds will trend southwesterly while steadily weakening ahead of an 
approaching cold front on sunday. currently expecting the front to 
move south across lake michigan late sunday afternoon into sunday 
evening, bringing a breezy northeast wind shift. gales are not 
anticipated during the frontal passage, with any isolated rain 
showers expected to remain over the far northern part of the lake. 
breezy northeast winds will continue through monday as 30.7 inch 
high pressure slides into ontario from the canadian great plains. 
winds will trend easterly and eventually southerly tuesday into 
the middle of next week as the aforementioned high shifts into the
northeastern united states. widespread rain chances return 
wednesday into friday.


lmz080-777-779-870-872-874-876-878-240315-
lake michigan from michigan city in to st. joseph mi 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-
212 pm cdt fri oct 23 2026

winthrop harbor il to south haven mi south...

.tonight...southeast winds 5 to 10 kt increasing to 10 to 15 kt
late this evening, then becoming southeast 10 to 15 kt after
midnight becoming south late. patchy fog overnight. waves 1 to
3 ft. 
.saturday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 3 to 5 ft. 
.saturday night...south winds 10 to 20 kt. waves 3 to 5 ft. 
.sunday...south winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday night...southwest winds 10 to 15 kt veering to northwest
10 to 20 kt. waves 1 to 3 ft. 
.monday...northeast winds 10 to 20 kt becoming north. waves 3 to
5 ft. 
.monday night...northeast winds 15 to 25 kt becoming east 10 to
20 kt. waves 3 to 5 ft. 
.tuesday...east winds 10 to 20 kt. waves 3 to 5 ft subsiding to
2 to 4 ft. 
.wednesday...south winds 10 to 20 kt. waves 3 to 5 ft.  

$$

fzus63 kmkx 231346
glflm 
expires:202610232130;;052668

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
846 am cdt fri oct 23 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...

30.4 inch high pressure is centered over quebec this morning, 
with 29.4 inch low pressure positioned over northeastern montana. 
positioning of these surface features is resulting in generally 
south to southeasterly winds across the waters. areas of fog, some
of which has been dense, will continue through at least mid- 
morning, particularly over the western half of the waters. dense 
fog advisory thus remains in effect until 10 am cdt, with trends 
being monitored for possible extensions over the next hour. 
aforementioned area of low pressure will progress toward lake 
winnipeg tonight, continuing on toward the hudson bay by saturday 
evening as it deepens to near 29.2 inches. progression of the low 
will maintain generally southerly flow across the waters, with 
gusts between 25-30 knots possible over the northern half of the 
lake saturday afternoon and night. can't rule out an isolated gust
approaching gale force during this time frame, with conditions 
not expected to be widespread enough for headlines.

winds will trend southwesterly while steadily weakening ahead of an 
approaching cold front on sunday. currently expecting the front to 
move south across lake michigan late sunday afternoon into sunday 
evening, bringing a breezy northeast wind shift. gales are not 
anticipated during the frontal passage, with any isolated rain 
showers expected to remain over the far northern part of the lake. 
breezy northeast winds will continue through monday as 30.7 inch 
high pressure slides into ontario from the canadian great plains. 
winds will trend easterly and eventually southerly tuesday into 
the middle of next week as the aforementioned high shifts into the
northeastern united states. widespread rain chances return 
wednesday into thursday ahead of 30.0 inch low pressure 
developing in the northern great plains.


lmz080-779-232130-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from wilmette harbor il to michigan city in 5 nm
offshore to mid lake-
846 am cdt fri oct 23 2026

wilmette harbor il to st. joseph mi south...

.rest of today...southeast winds 5 to 10 kt becoming east. waves
1 ft or less. 
.tonight...east winds 5 to 10 kt becoming southeast 10 to 15 kt.
waves 1 to 2 ft. 
.saturday...south winds 10 to 15 kt becoming southeast 5 to
10 kt. waves 1 to 2 ft. 
.saturday night...southeast winds 10 to 15 kt becoming south.
waves 1 to 2 ft. 
.sunday...south winds 5 to 10 kt. waves 1 to 2 ft. 
.sunday night...south winds less than 10 kt becoming southwest.
waves nearly calm. 
.monday...north winds 5 to 10 kt increasing to 10 to 15 kt. waves
1 to 2 ft building to 2 to 4 ft. 
.tuesday...east winds 10 to 15 kt. waves 3 to 5 ft subsiding to
1 to 3 ft.  

$$

fzus63 kmkx 231346
glflm 
expires:202610232130;;052667

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
846 am cdt fri oct 23 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...

30.4 inch high pressure is centered over quebec this morning, 
with 29.4 inch low pressure positioned over northeastern montana. 
positioning of these surface features is resulting in generally 
south to southeasterly winds across the waters. areas of fog, some
of which has been dense, will continue through at least mid- 
morning, particularly over the western half of the waters. dense 
fog advisory thus remains in effect until 10 am cdt, with trends 
being monitored for possible extensions over the next hour. 
aforementioned area of low pressure will progress toward lake 
winnipeg tonight, continuing on toward the hudson bay by saturday 
evening as it deepens to near 29.2 inches. progression of the low 
will maintain generally southerly flow across the waters, with 
gusts between 25-30 knots possible over the northern half of the 
lake saturday afternoon and night. can't rule out an isolated gust
approaching gale force during this time frame, with conditions 
not expected to be widespread enough for headlines.

winds will trend southwesterly while steadily weakening ahead of an 
approaching cold front on sunday. currently expecting the front to 
move south across lake michigan late sunday afternoon into sunday 
evening, bringing a breezy northeast wind shift. gales are not 
anticipated during the frontal passage, with any isolated rain 
showers expected to remain over the far northern part of the lake. 
breezy northeast winds will continue through monday as 30.7 inch 
high pressure slides into ontario from the canadian great plains. 
winds will trend easterly and eventually southerly tuesday into 
the middle of next week as the aforementioned high shifts into the
northeastern united states. widespread rain chances return 
wednesday into thursday ahead of 30.0 inch low pressure 
developing in the northern great plains.


lmz669-671-673-675-777-870-872-874-876-878-232130-
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 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-
846 am cdt fri oct 23 2026

sheboygan wi to pentwater mi south to wilmette harbor il to st.
joseph mi...

...dense fog advisory in effect until 10 am cdt this morning...

.rest of today...southeast winds 10 to 15 kt. patchy dense fog
through mid morning. waves 1 to 2 ft. 
.tonight...southeast winds 10 to 15 kt becoming south 10 to
20 kt. patchy fog overnight. waves 1 to 3 ft. 
.saturday...south winds 10 to 20 kt increasing to 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.saturday night...south winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.sunday...south winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday night...southwest winds 5 to 10 kt veering to north 10 to
20 kt. waves 1 to 3 ft. 
.monday...northeast winds 10 to 20 kt increasing to 15 to 25 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.tuesday...east winds 10 to 20 kt. waves 3 to 5 ft.  

$$