fzus63 kmkx 262010
glflm 
expires:202608270315;;407450

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
310 pm cdt wed aug 26 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...

moderate northwest winds continue this afternoon in the wake of
a cold front that passed over the lake this morning. these
northwest winds should ease tonight, then become gusty again 
and a bit stronger on thursday after dawn as another cold front
moves south down the lake. winds then ease thursday night and 
become light and variable on friday as high pressure of 30.2 
inches settles into the upper great lakes region.

high pressure then pulls east saturday and low pressure of 29.8
will approach from the plains. southerly winds will return and
become gusty this weekend. some gale potential exists on sunday.


lmz261-362-364-366-563-565-567-868-270315-
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-
310 pm cdt wed aug 26 2026

sheboygan wi to pentwater mi north...

.tonight...northwest winds 10 to 20 kt. chance of thunderstorms
with isolated showers this evening. waves 2 to 4 ft subsiding to
1 to 3 ft. 
.thursday...northwest winds 10 to 20 kt becoming north. waves
2 to 4 ft. 
.thursday night...northeast winds 10 to 20 kt diminishing to 5 to
10 kt. waves 1 to 3 ft subsiding to 1 to 2 ft. 
.friday...northeast winds 10 to 15 kt veering to south. waves
1 to 2 ft. 
.friday night...south winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft. 
.saturday...southwest winds 15 to 25 kt becoming south to 30 kt.
waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. 
.saturday night...south winds to 30 kt. chance of showers. waves
4 to 7 ft occasionally to 9 ft. 
.sunday...south winds to 30 kt increasing to gales to 40 kt.
chance of showers. waves 6 to 9 ft occasionally to 12 ft. 
.monday...south winds 15 to 25 kt. chance of showers. waves 4 to
6 ft occasionally to 8 ft.  

$$

fzus63 kmkx 262010
glflm 
expires:202608270315;;407451

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
310 pm cdt wed aug 26 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...

moderate northwest winds continue this afternoon in the wake of
a cold front that passed over the lake this morning. these
northwest winds should ease tonight, then become gusty again 
and a bit stronger on thursday after dawn as another cold front
moves south down the lake. winds then ease thursday night and 
become light and variable on friday as high pressure of 30.2 
inches settles into the upper great lakes region.

high pressure then pulls east saturday and low pressure of 29.8
will approach from the plains. southerly winds will return and
become gusty this weekend. some gale potential exists on sunday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-270315-
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-
310 pm cdt wed aug 26 2026

sheboygan wi to pentwater mi south...

.tonight...west winds 10 to 20 kt becoming northwest. slight
chance of thunderstorms with isolated showers this evening. waves
2 to 4 ft. 
.thursday...northwest winds 10 to 20 kt becoming northeast. waves
2 to 4 ft. 
.thursday night...northeast winds 10 to 20 kt becoming east 5 to
10 kt. waves 2 to 4 ft subsiding to 1 to 2 ft. 
.friday...east winds 5 to 10 kt becoming southeast 10 to 15 kt.
waves 1 to 2 ft. 
.friday night...south winds 10 to 15 kt increasing to 10 to
20 kt. waves 1 to 3 ft. 
.saturday...southwest winds 15 to 25 kt becoming south to 30 kt.
waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. 
.saturday night...south winds to 30 kt. chance of showers. waves
4 to 7 ft occasionally to 9 ft. 
.sunday...south winds to 30 kt increasing to gales to 35 kt.
chance of showers. waves 6 to 9 ft occasionally to 12 ft. 
.monday...southwest winds 15 to 25 kt becoming south. chance of
showers. waves 4 to 6 ft occasionally to 8 ft.  

$$