fzus63 kmkx 230759
glflm 
expires:202603231515;;156016

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
259 am cdt mon mar 23 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...

low pressure of 29.6 inches off the coast of maine will continue
east as high pressure of 30.5 inches in the northern plains
advects toward michigan. the pressure gradient is weaken between
these two systems which will bring an end to the gusty winds.
winds will continue to diminish through this afternoon as the high
builds in. light and variable winds are expected this evening into
tonight as the high moves overhead. 

as this high exits tuesday and a weak front passes, winds may 
pick up a bit from the south. largely south winds remain through
wednesday, as a broad low pressure around29.8 inches approaches 
from the west. chances for precipitation on tuesday and again on 
wednesday though primarily for northern parts of the lake.


lmz261-362-364-366-563-565-567-868-231515-
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-
259 am cdt mon mar 23 2026

sheboygan wi to pentwater mi north...

.today...north winds 10 to 20 kt becoming northwest 10 to 15 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft. 
.tonight...southwest winds 5 to 10 kt increasing to 30 kt. waves
1 to 3 ft building to 4 to 6 ft occasionally to 8 ft.
.tuesday...southwest winds to 30 kt diminishing to 10 to 20 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. 
.tuesday night...south winds 10 to 20 kt. waves 3 to 5 ft. 
.wednesday...east winds 10 to 20 kt. waves 3 to 5 ft. 
.wednesday night...east winds 10 to 20 kt. waves 3 to 5 ft. 
.thursday...south winds 10 to 20 kt veering to northwest. chance
of rain and snow. waves 1 to 3 ft building to 3 to 5 ft. 
.friday...north winds to 30 kt becoming northwest 15 to 25 kt.
waves 8 to 12 ft occasionally to 16 ft subsiding to 5 to 8 ft
occasionally to 10 ft.  

$$

fzus63 kmkx 230759
glflm 
expires:202603231515;;156017

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
259 am cdt mon mar 23 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...

low pressure of 29.6 inches off the coast of maine will continue
east as high pressure of 30.5 inches in the northern plains
advects toward michigan. the pressure gradient is weaken between
these two systems which will bring an end to the gusty winds.
winds will continue to diminish through this afternoon as the high
builds in. light and variable winds are expected this evening into
tonight as the high moves overhead. 

as this high exits tuesday and a weak front passes, winds may 
pick up a bit from the south. largely south winds remain through
wednesday, as a broad low pressure around29.8 inches approaches 
from the west. chances for precipitation on tuesday and again on 
wednesday though primarily for northern parts of the lake.


lmz080-669-671-673-675-777-779-870-872-874-876-878-231515-
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-
259 am cdt mon mar 23 2026

sheboygan wi to pentwater mi south...

.today...north winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.tonight...northeast winds 10 to 15 kt becoming southeast late in
the evening, then becoming south 10 to 20 kt after midnight
increasing to 15 to 25 kt late. waves 3 to 5 ft subsiding to 2 to
4 ft. 
.tuesday...south winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 3 to 5 ft. 
.tuesday night...south winds 10 to 15 kt. waves 2 to 4 ft. 
.wednesday...south winds 10 to 15 kt. waves 3 to 5 ft. 
.wednesday night...east winds 10 to 20 kt becoming southeast.
waves 2 to 4 ft subsiding to 1 to 3 ft. 
.thursday...south winds 10 to 20 kt veering to west. chance of
rain. waves 1 to 3 ft building to 3 to 5 ft. 
.friday...north winds to 30 kt diminishing to 15 to 25 kt. waves
10 to 14 ft occasionally to 18 ft subsiding to 8 to 11 ft
occasionally to 14 ft.  

$$