fzus63 kmkx 100748
glflm 
expires:202609101530;;676654

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 am cdt thu sep 10 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...

high pressure of 30.0 inches over eastern south dakota will push
eastward into the great lakes region today, extending from
southern quebec down into the southern plains by tonight. low
pressure of 29.4 inches will develop over the high plains on
friday which will increase the winds out of the south going into
saturday before a cold front tracks across lake michigan from
north to south on saturday. high pressure of 30.2 inches will
extend down into the western great lakes from southern manitoba on
sunday. going into early next week, it looks like broad high
pressure of 30.3 inches will setup over the eastern great lakes as
low pressure of 29.5 inches develops of southern manitoba. this
will cause an increase in the winds across lake michigan, possibly
to gales.


lmz261-362-364-366-563-565-567-868-101530-
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-
248 am cdt thu sep 10 2026

sheboygan wi to pentwater mi north...

.today...northwest winds 10 to 20 kt becoming southwest. waves
1 to 3 ft. 
.tonight...south winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 3 ft. 
.friday...southwest winds 10 to 20 kt becoming south to 30 kt.
waves 4 to 6 ft occasionally to 8 ft. 
.friday night...south winds to 30 kt. waves 4 to 7 ft
occasionally to 9 ft. 
.saturday...southwest winds to 30 kt. waves 4 to 6 ft
occasionally to 8 ft. 
.saturday night...west winds 10 to 20 kt becoming north. waves
2 to 4 ft. 
.sunday...north winds 10 to 20 kt. waves 1 to 3 ft. 
.monday...east winds to 30 kt becoming southeast gales to 35 kt.
chance of showers. waves 7 to 10 ft occasionally to 13 ft.  

$$

fzus63 kmkx 100748
glflm 
expires:202609101530;;676655

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 am cdt thu sep 10 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...

high pressure of 30.0 inches over eastern south dakota will push
eastward into the great lakes region today, extending from
southern quebec down into the southern plains by tonight. low
pressure of 29.4 inches will develop over the high plains on
friday which will increase the winds out of the south going into
saturday before a cold front tracks across lake michigan from
north to south on saturday. high pressure of 30.2 inches will
extend down into the western great lakes from southern manitoba on
sunday. going into early next week, it looks like broad high
pressure of 30.3 inches will setup over the eastern great lakes as
low pressure of 29.5 inches develops of southern manitoba. this
will cause an increase in the winds across lake michigan, possibly
to gales.


lmz080-669-671-673-675-777-779-870-872-874-876-878-101530-
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-
248 am cdt thu sep 10 2026

sheboygan wi to pentwater mi south...

.today...northwest winds 10 to 15 kt becoming northeast. waves
1 to 3 ft. 
.tonight...northeast winds 10 to 15 kt veering to southeast.
waves 1 to 2 ft. 
.friday...south winds 10 to 15 kt increasing to 15 to 25 kt.
waves 2 to 4 ft. 
.friday night...southeast winds 15 to 25 kt becoming south 10 to
20 kt. waves 3 to 5 ft. 
.saturday...south winds 15 to 25 kt becoming southwest. waves
4 to 6 ft occasionally to 8 ft. 
.saturday night...west winds 10 to 20 kt becoming northwest.
waves 2 to 4 ft. 
.sunday...north winds 10 to 20 kt. waves 2 to 4 ft. 
.monday...southeast winds to 30 kt becoming south gales to 35 kt.
chance of showers. waves 7 to 10 ft occasionally to 13 ft.  

$$