fzus63 kmkx 210906
glflm 
expires:202601211645;;259613

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
306 am cst wed jan 21 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...

weak low pressure around 30.0 inches will move across southern 
lake michigan this morning, with increasing westerly winds behind 
it this afternoon. stronger west to northwest winds are expected 
late this afternoon and this evening, behind a passing arctic cold
front, as a more organized low pressure system around 29.6 inches
moves across lake superior.

gale force gusts are expected over the southern half of lake 
michigan, where a gale warning is in effect later this afternoon 
into early thursday morning. gusty west to northwest winds 
thursday will will turn mainly northwest friday, as strong high 
pressure around 31.0 inches builds into the northern great 
plains. a few gale force gusts may occur during this period.

arriving arctic air and elevated wave heights will support 
additional periods of heavy freezing spray wednesday night into 
friday night across the lake. a heavy freezing spray warning is 
in effect for this period. 

the high will shift into wisconsin by saturday, with gradually
lighter winds across lake michigan.


lmz261-362-364-366-563-565-567-868-211645-
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-
306 am cst wed jan 21 2026

sheboygan wi to pentwater mi north...

...heavy freezing spray warning in effect from this evening
through late friday night...

.today...west winds 10 to 15 kt increasing to 30 kt. chance of
snow this morning, then chance of snow showers this afternoon.
waves 3 to 5 ft building to 4 to 6 ft occasionally to 8 ft.
.tonight...west winds to 30 kt. chance of snow showers in the
evening. freezing spray. waves 7 to 10 ft occasionally to 13 ft
building to 8 to 11 ft occasionally to 14 ft. 
.thursday...west winds to 30 kt. heavy freezing spray. waves 8 to
11 ft occasionally to 14 ft subsiding to 7 to 10 ft occasionally
to 13 ft. 
.thursday night...west winds to 30 kt becoming northwest. a few 
gales to 35 kt. heavy freezing spray. waves 8 to 11 ft 
occasionally to 14 ft.
.friday...northwest winds to 30 kt. a few gales to 35 kt. heavy 
freezing spray. waves 8 to 11 ft occasionally to 14 ft subsiding 
to 6 to 9 ft occasionally to 12 ft. 
.friday night...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft. 
.saturday...northwest winds 10 to 15 kt becoming west. waves 2 to
4 ft. 
.sunday...west winds 10 to 15 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 210906
glflm 
expires:202601211645;;259614

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
306 am cst wed jan 21 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...

weak low pressure around 30.0 inches will move across southern 
lake michigan this morning, with increasing westerly winds behind 
it this afternoon. stronger west to northwest winds are expected 
late this afternoon and this evening, behind a passing arctic cold
front, as a more organized low pressure system around 29.6 inches
moves across lake superior.

gale force gusts are expected over the southern half of lake 
michigan, where a gale warning is in effect later this afternoon 
into early thursday morning. gusty west to northwest winds 
thursday will will turn mainly northwest friday, as strong high 
pressure around 31.0 inches builds into the northern great 
plains. a few gale force gusts may occur during this period.

arriving arctic air and elevated wave heights will support 
additional periods of heavy freezing spray wednesday night into 
friday night across the lake. a heavy freezing spray warning is 
in effect for this period. 

the high will shift into wisconsin by saturday, with gradually
lighter winds across lake michigan.


lmz080-669-671-673-675-777-779-870-872-874-876-878-211645-
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-
306 am cst wed jan 21 2026

sheboygan wi to pentwater mi south...

...gale warning in effect from this afternoon through late
tonight...
...heavy freezing spray warning in effect from this evening
through late friday night...

.today...southwest winds 15 to 25 kt becoming west gales to 35 
kt late. chance of snow this morning, then slight chance of snow 
showers this afternoon. waves 4 to 7 ft occasionally to 9 ft.
.tonight...west gales to 35 kt. chance of snow showers in the
evening, then slight chance of snow showers overnight. freezing
spray overnight. waves 7 to 10 ft occasionally to 13 ft building
to 10 to 14 ft occasionally to 18 ft. 
.thursday...west winds to 30 kt. a few gales to 35 kt. freezing 
spray. chance of snow showers in the afternoon. waves 10 to 14 ft 
occasionally to 18 ft subsiding to 8 to 11 ft occasionally to 14 
ft. 
.thursday night...west winds to 30 kt becoming northwest. a few 
gales to 35 kt. heavy freezing spray. chance of snow. waves 10 to
14 ft occasionally to 18 ft. 
.friday...northwest winds to 30 kt. a few gales to 35 kt. heavy 
freezing spray. chance of snow. waves 10 to 14 ft occasionally to 
18 ft subsiding to 8 to 11 ft occasionally to 14 ft. 
.friday night...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. heavy freezing spray. waves 5 to 8 ft occasionally to
10 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.saturday...northwest winds 10 to 15 kt. chance of snow. waves
3 to 5 ft. 
.sunday...east winds 10 to 15 kt backing to northwest. chance of
snow. waves 3 to 5 ft.  

$$