fzus63 kmkx 051457
glflm 
expires:202603052215;;671215

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
857 am cst thu mar 5 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...

east to northeast winds will continue through much of today, as 
weak low pressure around 29.9 inches passes across the northern 
ohio river valley. rain and drizzle are possible across the 
southern half of the lake into today, while marine dense fog with 
visibilities of 1 nautical mile or less continues across the
southern third of the open waters today into tonight.

low pressure around 29.5 inches will develop in the central 
plains thursday night, and track toward the upper mississippi 
river valley by friday evening. this low will move near or just 
north of lake michigan later friday night into saturday morning, 
quickly moving into quebec by saturday evening. 

as the low passes to the north, breezy southerly winds will 
develop for friday afternoon and night, then shifting west to
northwest on saturday, with the passage of the cold front. 
widespread rain and embedded thunderstorms will accompany the 
approaching and passing low friday into friday night. breezy
southwest winds are then forecast for sunday into monday.


lmz261-362-364-366-563-565-567-669-868-870-052215-
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 sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
857 am cst thu mar 5 2026

port washington wi to whitehall mi north...

.rest of today...east winds 15 to 25 kt becoming northeast.
patchy fog. isolated rain showers. waves 2 to 4 ft. 
.tonight...east winds 15 to 25 kt becoming southeast 10 to 20 kt.
patchy fog. waves 2 to 4 ft subsiding to 1 to 3 ft.
.friday...southeast winds 10 to 20 kt becoming south 15 to 25 kt.
patchy fog in the morning. scattered rain showers in the morning,
then rain showers in the afternoon. waves 1 to 2 ft building to
4 to 6 ft occasionally to 8 ft. 
.friday night...south winds to 30 kt becoming southwest. rain
showers with a chance of thunderstorms. waves 6 to 9 ft
occasionally to 12 ft. 
.saturday...west winds to 30 kt becoming northwest. chance of
rain showers in the morning. waves 6 to 9 ft occasionally to
12 ft. 
.saturday night...west winds 10 to 20 kt becoming southwest to
30 kt. waves 4 to 6 ft occasionally to 8 ft. 
.sunday...southwest gales to 35 kt. waves 7 to 10 ft occasionally
to 13 ft. 
.monday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 051457
glflm 
expires:202603052215;;671216

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
857 am cst thu mar 5 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...

east to northeast winds will continue through much of today, as 
weak low pressure around 29.9 inches passes across the northern 
ohio river valley. rain and drizzle are possible across the 
southern half of the lake into today, while marine dense fog with 
visibilities of 1 nautical mile or less continues across the
southern third of the open waters today into tonight.

low pressure around 29.5 inches will develop in the central 
plains thursday night, and track toward the upper mississippi 
river valley by friday evening. this low will move near or just 
north of lake michigan later friday night into saturday morning, 
quickly moving into quebec by saturday evening. 

as the low passes to the north, breezy southerly winds will 
develop for friday afternoon and night, then shifting west to
northwest on saturday, with the passage of the cold front. 
widespread rain and embedded thunderstorms will accompany the 
approaching and passing low friday into friday night. breezy
southwest winds are then forecast for sunday into monday.


lmz080-671-673-675-777-779-872-874-876-878-052215-
lake michigan from michigan city in to st. joseph mi 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 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-
857 am cst thu mar 5 2026

port washington wi to whitehall mi south...

...dense fog advisory in effect until 6 am cst friday...

.rest of today...northeast winds 10 to 15 kt. widespread dense
fog. scattered rain showers through mid morning, then isolated
rain showers this afternoon. waves 1 to 2 ft. 
.tonight...northeast winds 10 to 15 kt becoming southeast. areas
of dense fog. waves 1 to 2 ft. 
.friday...southeast winds 10 to 15 kt increasing to 10 to 20 kt
late in the morning, then becoming south 15 to 25 kt early in the
afternoon diminishing to 10 to 20 kt late. patchy fog in the
morning. scattered rain showers in the morning, then rain showers
likely with a chance of thunderstorms in the afternoon. waves
1 to 2 ft building to 4 to 6 ft occasionally to 8 ft. 
.friday night...south winds to 30 kt becoming southwest. chance
of showers and thunderstorms in the evening, then showers with a
chance of thunderstorms overnight. waves 6 to 9 ft occasionally
to 12 ft. 
.saturday...southwest winds to 30 kt becoming northwest 15 to
25 kt. chance of rain showers in the morning. waves 6 to 9 ft
occasionally to 12 ft. 
.saturday night...west winds 10 to 20 kt becoming southwest 15 to
25 kt. waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft. 
.sunday...southwest winds to 30 kt. waves 4 to 7 ft occasionally
to 9 ft building to 5 to 8 ft occasionally to 10 ft. 
.monday...southwest winds to 30 kt. waves 6 to 9 ft occasionally
to 12 ft.  

$$

fzus63 kmkx 050913
glflm 
expires:202603051615;;658974

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 am cst thu mar 5 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...

east to northeast winds will continue through much of today, as 
weak low pressure around 29.9 inches passes across the northern 
ohio river valley. rain and drizzle are possible across the 
southern half of the lake into today, while marine dense fog with 
visibilities of 1 nautical mile or less continues across 
southwestern portions of the open waters today and perhaps into 
tonight.

low pressure around 29.5 inches will develop in the central 
plains thursday night, and track toward the upper mississippi 
river valley by friday evening. this low will move near or just 
north of lake michigan later friday night into saturday morning, 
quickly moving into quebec by saturday evening. 

as the low passes to the north, breezy southerly winds will 
develop for friday afternoon and night, then shifting west to
northwest on saturday, with the passage of the cold front. 
widespread rain and embedded thunderstorms will accompany the 
approaching and passing low friday into friday night. breezy
southwest winds are then forecast for sunday into monday.


lmz671-673-675-777-779-051615-
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-
313 am cst thu mar 5 2026

port washington wi to whitehall mi south...

...dense fog advisory in effect until 6 am cst friday...

.today...northeast winds 10 to 15 kt. areas of dense fog. chance
of rain this morning, then slight chance of rain this afternoon.
waves 1 to 2 ft. 
.tonight...northeast winds 10 to 15 kt becoming southeast. areas
of dense fog. waves 1 to 2 ft. 
.friday...southeast winds 10 to 15 kt becoming south 15 to 25 kt,
then diminishing to 10 to 20 kt late. rain showers in the
morning, then rain showers likely with a chance of thunderstorms
in the afternoon. waves 1 to 2 ft building to 4 to 6 ft
occasionally to 8 ft. 
.friday night...south winds 15 to 25 kt becoming southwest.
chance of showers and thunderstorms in the evening, then showers
with a chance of thunderstorms overnight. waves 4 to 7 ft
occasionally to 9 ft building to 5 to 8 ft occasionally to 10 ft.
.saturday...southwest winds 15 to 25 kt becoming northwest.
chance of rain showers in the morning. waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft. 
.saturday night...west winds 10 to 20 kt becoming southwest 15 to
25 kt. waves 2 to 4 ft. 
.sunday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 4 to 7 ft occasionally to 9 ft. 
.monday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmkx 050913
glflm 
expires:202603051615;;658973

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 am cst thu mar 5 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...

east to northeast winds will continue through much of today, as 
weak low pressure around 29.9 inches passes across the northern 
ohio river valley. rain and drizzle are possible across the 
southern half of the lake into today, while marine dense fog with 
visibilities of 1 nautical mile or less continues across 
southwestern portions of the open waters today and perhaps into 
tonight.

low pressure around 29.5 inches will develop in the central 
plains thursday night, and track toward the upper mississippi 
river valley by friday evening. this low will move near or just 
north of lake michigan later friday night into saturday morning, 
quickly moving into quebec by saturday evening. 

as the low passes to the north, breezy southerly winds will 
develop for friday afternoon and night, then shifting west to
northwest on saturday, with the passage of the cold front. 
widespread rain and embedded thunderstorms will accompany the 
approaching and passing low friday into friday night. breezy
southwest winds are then forecast for sunday into monday.


lmz261-362-364-366-563-565-567-868-051615-
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-
313 am cst thu mar 5 2026

sheboygan wi to pentwater mi north...

.today...east winds 15 to 25 kt diminishing to 10 to 20 kt.
slight chance of rain this afternoon. waves 2 to 4 ft. 
.tonight...east winds 15 to 25 kt becoming southeast 10 to 20 kt.
slight chance of rain overnight. waves 2 to 4 ft subsiding to
1 to 2 ft. 
.friday...southeast winds 10 to 20 kt becoming south 15 to 25 kt.
chance of rain showers in the morning, then rain showers in the
afternoon. waves 1 to 2 ft building to 4 to 6 ft occasionally to
8 ft. 
.friday night...south winds to 30 kt becoming southwest. rain
showers with a chance of thunderstorms. waves 6 to 9 ft
occasionally to 12 ft. 
.saturday...west winds to 30 kt becoming northwest. chance of
rain showers in the morning. waves 6 to 9 ft occasionally to
12 ft. 
.saturday night...west winds 10 to 20 kt becoming southwest to
30 kt. waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft. 
.sunday...southwest gales to 35 kt. waves 7 to 10 ft occasionally
to 13 ft. 
.monday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 050913
glflm 
expires:202603051615;;658975

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
313 am cst thu mar 5 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...

east to northeast winds will continue through much of today, as 
weak low pressure around 29.9 inches passes across the northern 
ohio river valley. rain and drizzle are possible across the 
southern half of the lake into today, while marine dense fog with 
visibilities of 1 nautical mile or less continues across 
southwestern portions of the open waters today and perhaps into 
tonight.

low pressure around 29.5 inches will develop in the central 
plains thursday night, and track toward the upper mississippi 
river valley by friday evening. this low will move near or just 
north of lake michigan later friday night into saturday morning, 
quickly moving into quebec by saturday evening. 

as the low passes to the north, breezy southerly winds will 
develop for friday afternoon and night, then shifting west to
northwest on saturday, with the passage of the cold front. 
widespread rain and embedded thunderstorms will accompany the 
approaching and passing low friday into friday night. breezy
southwest winds are then forecast for sunday into monday.


lmz080-669-870-872-874-876-878-051615-
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 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-
313 am cst thu mar 5 2026

sheboygan wi to pentwater mi south to port washington wi to
whitehall mi...

.today...northeast winds 10 to 15 kt. patchy fog. chance of rain
this morning, then slight chance of rain this afternoon. waves
1 to 2 ft. 
.tonight...east winds 10 to 15 kt becoming southeast. patchy fog
in the evening, then areas of dense fog overnight. waves 1 to
2 ft. 
.friday...southeast winds 10 to 15 kt increasing to 10 to 20 kt
late in the morning, then becoming south 15 to 25 kt in the
afternoon. rain showers likely in the morning, then rain showers
likely with a chance of thunderstorms in the afternoon. waves
1 to 2 ft building to 4 to 6 ft occasionally to 8 ft.
.friday night...south winds to 30 kt becoming southwest. chance
of rain showers and thunderstorms in the evening, then rain
showers with a chance of thunderstorms overnight. waves 6 to 9 ft
occasionally to 12 ft. 
.saturday...southwest winds to 30 kt becoming northwest 15 to
25 kt. chance of rain showers in the morning. waves 6 to 9 ft
occasionally to 12 ft. 
.saturday night...west winds 10 to 20 kt becoming southwest 15 to
25 kt. waves 4 to 6 ft occasionally to 8 ft. 
.sunday...southwest winds to 30 kt. waves 6 to 9 ft occasionally
to 12 ft. 
.monday...southwest winds to 30 kt. waves 6 to 9 ft occasionally
to 12 ft.  

$$