fzus63 kmkx 080233
glflm 
expires:202512081045;;194928

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
833 pm cst sun dec 7 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...

light north to northeasterly winds over the southern two thirds of
the lake this evening veer due east and weaken overnight as high
pressure around 30.4 inches builds into the region. high pressure
exits monday afternoon as low pressure around 29.8 inches tracks 
through northern minnesota into lake superior, bringing stiff 
southwesterly winds gusting to gale force. a gale watch is in 
effect late monday night into early tuesday morning. a few gusts 
near 40 kt are possible over the far northern portions of the open
waters. as low pressure exits, expect winds to shift to become 
westerly through the day tuesday. 

another low around 29.0 inches from the northern plains will shift
winds to south-southwest tuesday evening, before the low crosses
near the center of lake michigan and brings strong southwesterly
winds to the southern half and light easterly winds to the
northern half overnight tuesday. winds will all shift to
northwesterly as the low exits into wednesday, with gales 
possible in the southern half throughout this time frame. winds
gradually diminish wednesday night, but remain northwesterly
through the end of the week.


lmz261-362-364-366-563-565-567-868-081045-
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-
833 pm cst sun dec 7 2025

sheboygan wi to pentwater mi north...

...gale watch in effect from monday evening through late monday
night...

.rest of tonight...north winds 10 to 20 kt diminishing to 5 to
10 kt after midnight, then becoming west late. slight chance of
snow showers overnight. waves 2 to 4 ft subsiding to 1 to 3 ft. 
.monday...southwest winds 10 to 15 kt increasing to 15 to 25 kt.
slight chance of snow showers in the morning, then chance of snow
showers in the afternoon. waves 1 to 3 ft building to 4 to 6 ft
occasionally to 8 ft. 
.monday night...southwest winds to 30 kt increasing to gales to
35 kt. a few gusts to 40 kt. chance of snow showers in the 
evening, then snow overnight. waves 6 to 9 ft occasionally to 12 
ft building to 12 to 16 ft occasionally to 21 ft. 
.tuesday...west winds to 30 kt diminishing to 15 to 25 kt. snow
likely in the morning, then chance of snow and rain in the
afternoon. waves 10 to 14 ft occasionally to 18 ft subsiding to
6 to 9 ft occasionally to 12 ft. 
.tuesday night...south winds 15 to 25 kt backing to east to
30 kt. rain with snow likely in the evening, then snow and rain
overnight. waves 6 to 9 ft occasionally to 12 ft building to 8 to
12 ft occasionally to 16 ft. 
.wednesday...north gales to 35 kt diminishing to 30 kt. snow
likely in the morning, then chance of snow in the afternoon.
waves 8 to 11 ft occasionally to 14 ft. 
.wednesday night...northwest winds to 30 kt diminishing to 10 to
20 kt. waves 7 to 10 ft occasionally to 13 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.thursday...northwest winds 10 to 20 kt. waves 2 to 4 ft. 
.friday...northwest winds to 30 kt increasing to gales to 35 kt.
chance of snow. waves 4 to 7 ft occasionally to 9 ft building to
6 to 9 ft occasionally to 12 ft.  

$$

fzus63 kmkx 080233
glflm 
expires:202512081045;;194929

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
833 pm cst sun dec 7 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...

light north to northeasterly winds over the southern two thirds of
the lake this evening veer due east and weaken overnight as high
pressure around 30.4 inches builds into the region. high pressure
exits monday afternoon as low pressure around 29.8 inches tracks 
through northern minnesota into lake superior, bringing stiff 
southwesterly winds gusting to gale force. a gale watch is in 
effect late monday night into early tuesday morning. a few gusts 
near 40 kt are possible over the far northern portions of the open
waters. as low pressure exits, expect winds to shift to become 
westerly through the day tuesday. 

another low around 29.0 inches from the northern plains will shift
winds to south-southwest tuesday evening, before the low crosses
near the center of lake michigan and brings strong southwesterly
winds to the southern half and light easterly winds to the
northern half overnight tuesday. winds will all shift to
northwesterly as the low exits into wednesday, with gales 
possible in the southern half throughout this time frame. winds
gradually diminish wednesday night, but remain northwesterly
through the end of the week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-081045-
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-
833 pm cst sun dec 7 2025

sheboygan wi to pentwater mi south...

.rest of tonight...northeast winds 10 to 20 kt becoming east
10 to 15 kt. chance of snow showers. waves 4 to 7 ft occasionally
to 9 ft subsiding to 3 to 5 ft. 
.monday...southeast winds 10 to 15 kt increasing to 10 to 20 kt
late in the morning, then becoming south early in the afternoon
increasing to 15 to 25 kt late. slight chance of snow showers in
the morning. waves 3 to 5 ft building to 4 to 6 ft occasionally
to 8 ft. 
.monday night...south winds to 30 kt becoming southwest. a few
gusts to gale force possible. chance of snow showers in the 
evening, then snow likely overnight. waves 6 to 9 ft occasionally 
to 12 ft building to 10 to 14 ft occasionally to 18 ft. 
.tuesday...southwest winds to 30 kt. chance of snow in the 
morning. waves 12 to 16 ft occasionally to 21 ft subsiding to 8 to
11 ft occasionally to 14 ft. 
.tuesday night...southwest winds to 30 kt increasing to gales to 
40 kt. rain. waves 8 to 12 ft occasionally to 16 ft building to 12
to 16 ft occasionally to 21 ft. 
.wednesday...northwest gales to 40 kt diminishing to gales to
35 kt. rain and snow likely in the morning, then chance of snow
in the afternoon. waves 12 to 16 ft occasionally to 21 ft. 
.wednesday night...northwest winds to 30 kt diminishing to 10 to
20 kt. chance of snow. waves 10 to 14 ft occasionally to 18 ft
subsiding to 6 to 9 ft occasionally to 12 ft. 
.thursday...northwest winds 10 to 20 kt. waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft. 
.friday...northwest winds to 30 kt increasing to gales to 40 kt.
freezing spray. chance of snow. waves 7 to 10 ft occasionally to
13 ft building to 8 to 12 ft occasionally to 16 ft.  

$$