fzus63 kmkx 070903
glflm 
expires:202601071645;;931860

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
303 am cst wed jan 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...

a high pressure ridge averaging 29.8 inches will slide across the
upper great lakes today. we cannot rule out seeing some pockets 
of dense marine fog at times given the relatively warm air over
the cooler waters. look for southerly winds to increase as low 
pressure of 29.5 inches develops over the northern plains. that 
trough will lift into northern ontario thursday, but a stronger 
low of 29.3 inches will track across central lake michigan 
thursday night. expect breezy southerly winds over the south half 
of lm. the low will reach southern quebec on friday, and breezy 
northwest to west winds will develop behind it. 

friday night, low pressure over the mid mississippi river valley
will strengthen to 29.4 inches as it lifts into the eastern great
lakes saturday evening. expect stronger northerly winds with the 
potential to see some gales over the open waters of lake michigan
through sunday morning.


lmz261-362-364-366-563-565-567-868-071645-
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-
303 am cst wed jan 7 2026

sheboygan wi to pentwater mi north...

.today...west winds 10 to 15 kt becoming southwest 10 to 20 kt.
waves 2 to 4 ft. 
.tonight...southwest winds 10 to 20 kt becoming south. patchy fog
in the evening. waves 3 to 5 ft. 
.thursday...south winds 10 to 20 kt. chance of rain in the
afternoon. waves 4 to 6 ft occasionally to 8 ft. 
.thursday night...east winds 10 to 20 kt backing to north. rain.
waves 3 to 5 ft. 
.friday...northwest winds 15 to 25 kt becoming north. chance of
rain in the morning. waves 3 to 5 ft. 
.friday night...northeast winds 10 to 15 kt becoming east 10 to
20 kt. waves 3 to 5 ft. 
.saturday...east winds 15 to 25 kt becoming northeast to 30 kt.
snow likely. waves 4 to 6 ft occasionally to 8 ft building to
6 to 9 ft occasionally to 12 ft. 
.sunday...northwest winds to 30 kt. waves 6 to 9 ft occasionally
to 12 ft subsiding to 4 to 6 ft occasionally to 8 ft.  

$$

fzus63 kmkx 070903
glflm 
expires:202601071645;;931861

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
303 am cst wed jan 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...

a high pressure ridge averaging 29.8 inches will slide across the
upper great lakes today. we cannot rule out seeing some pockets 
of dense marine fog at times given the relatively warm air over
the cooler waters. look for southerly winds to increase as low 
pressure of 29.5 inches develops over the northern plains. that 
trough will lift into northern ontario thursday, but a stronger 
low of 29.3 inches will track across central lake michigan 
thursday night. expect breezy southerly winds over the south half 
of lm. the low will reach southern quebec on friday, and breezy 
northwest to west winds will develop behind it. 

friday night, low pressure over the mid mississippi river valley
will strengthen to 29.4 inches as it lifts into the eastern great
lakes saturday evening. expect stronger northerly winds with the 
potential to see some gales over the open waters of lake michigan
through sunday morning.


lmz080-669-671-673-675-777-779-870-872-874-876-878-071645-
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-
303 am cst wed jan 7 2026

sheboygan wi to pentwater mi south...

.today...west winds 10 to 15 kt becoming south 10 to 20 kt.
patchy fog this morning. waves 2 to 4 ft. 
.tonight...south winds 10 to 20 kt. waves 3 to 5 ft. 
.thursday...south winds 10 to 20 kt becoming southeast. rain in
the afternoon. waves 4 to 6 ft occasionally to 8 ft. 
.thursday night...south winds 15 to 25 kt veering to west. rain
in the evening, then rain likely overnight. waves 3 to 5 ft. 
.friday...northwest winds 10 to 20 kt becoming north. chance of
rain in the morning. waves 3 to 5 ft. 
.friday night...northeast winds 10 to 20 kt becoming east. chance
of rain. waves 4 to 6 ft occasionally to 8 ft. 
.saturday...east winds 15 to 25 kt veering to west to 30 kt. rain
and snow likely. waves 6 to 9 ft occasionally to 12 ft building
to 8 to 11 ft occasionally to 14 ft. 
.sunday...northwest gales to 35 kt diminishing to 15 to 25 kt.
chance of snow. waves 8 to 11 ft occasionally to 14 ft subsiding
to 5 to 8 ft occasionally to 10 ft.  

$$