fzus63 kmkx 231948
glflm 
expires:202603240315;;182722

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 pm 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
pushes toward and builds into michigan. the pressure gradient 
is gradually weakening between these two systems which will 
bring an end to the gusty winds over the next few hours as the 
high builds in. light and variable winds are expected into this
evening as the high moves overhead. 

however, into the late overnight hours and into tuesday winds 
in the north half of the lake may become breezy as a stalling 
front moves over the north side of the lake behind the departing
high. this may actually bring south winds that may approach 
gales although gales remain unlikely at this time. winds will 
weaken through tuesday as the front weakens and high pressure to 
the north squeezes out the stronger pressure gradient to the east.

largely south winds remain through wednesday, as a broad low 
pressure around 29.8 inches approaches from the west. chances 
for precipitation on tuesday and again on wednesday though 
primarily for northern parts of the lake.

the next best chance for gales will come thursday evening as the
backside of a low pressure system around 29.6 inches works
southeast.


lmz261-362-364-366-563-565-567-868-240315-
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 pm cdt mon mar 23 2026

sheboygan wi to pentwater mi north...

.tonight...north winds 5 to 10 kt veering to south 10 to 20 kt
late this evening, then becoming southwest 15 to 25 kt after
midnight becoming south to 30 kt late. chance of snow overnight.
waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft. 
.tuesday...southwest winds to 30 kt diminishing to 10 to 20 kt.
chance of snow in the morning. waves 6 to 9 ft occasionally to
12 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.tuesday night...south winds 10 to 20 kt. waves 3 to 5 ft. 
.wednesday...south winds 10 to 20 kt. waves 3 to 5 ft. 
.wednesday night...south winds 10 to 15 kt. waves 2 to 4 ft.
.thursday...southwest winds 10 to 20 kt veering to north 15 to
25 kt. chance of rain in the morning, then chance of rain and
snow in the afternoon. waves 1 to 3 ft building to 3 to 5 ft.
.thursday night...north winds to 30 kt. waves 8 to 11 ft
occasionally to 14 ft building to 8 to 12 ft occasionally to
16 ft. 
.friday...north winds to 30 kt becoming northwest 10 to 20 kt.
waves 8 to 11 ft occasionally to 14 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.saturday...west winds 15 to 25 kt. waves 4 to 7 ft occasionally
to 9 ft.  

$$

fzus63 kmkx 231948
glflm 
expires:202603240315;;182723

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
248 pm 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
pushes toward and builds into michigan. the pressure gradient 
is gradually weakening between these two systems which will 
bring an end to the gusty winds over the next few hours as the 
high builds in. light and variable winds are expected into this
evening as the high moves overhead. 

however, into the late overnight hours and into tuesday winds 
in the north half of the lake may become breezy as a stalling 
front moves over the north side of the lake behind the departing
high. this may actually bring south winds that may approach 
gales although gales remain unlikely at this time. winds will 
weaken through tuesday as the front weakens and high pressure to 
the north squeezes out the stronger pressure gradient to the east.

largely south winds remain through wednesday, as a broad low 
pressure around 29.8 inches approaches from the west. chances 
for precipitation on tuesday and again on wednesday though 
primarily for northern parts of the lake.

the next best chance for gales will come thursday evening as the
backside of a low pressure system around 29.6 inches works
southeast.


lmz080-669-671-673-675-777-779-870-872-874-876-878-240315-
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 pm cdt mon mar 23 2026

sheboygan wi to pentwater mi south...

.tonight...northeast winds 10 to 15 kt becoming east late this
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 4 to 6 ft occasionally to 8 ft. 
.tuesday night...south winds 10 to 15 kt increasing to 10 to
20 kt. waves 2 to 4 ft. 
.wednesday...south winds 10 to 20 kt. waves 3 to 5 ft. 
.wednesday night...southwest winds 10 to 15 kt becoming south.
waves 2 to 4 ft. 
.thursday...southwest winds 10 to 15 kt veering to northwest
10 to 20 kt. chance of rain in the afternoon. waves 2 to 4 ft
building to 4 to 6 ft occasionally to 8 ft. 
.thursday night...north gales to 35 kt. waves 8 to 12 ft
occasionally to 16 ft building to 10 to 14 ft occasionally to
18 ft. 
.friday...north winds to 30 kt diminishing to 15 to 25 kt. waves
10 to 14 ft occasionally to 18 ft subsiding to 7 to 10 ft
occasionally to 13 ft. 
.saturday...west winds 15 to 25 kt becoming southwest. waves 4 to
7 ft occasionally to 9 ft.  

$$