fzus63 kmkx 200153
glflm 
expires:202603200930;;980825

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
853 pm cdt thu mar 19 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...

south to southwest winds are expected to develop overnight, as 
low pressure around 29.7 inches progresses southeast into northern
lower michigan. winds will shift to northwest to north friday 
morning, as a cold front shifts southeast across the lake. winds
become light friday night, as high pressure around 30.3 inches 
builds into ontario. 

low pressure around 29.5 inches develops in the lee of the 
wyoming rockies saturday morning, shifting winds south. the low 
should move southeastward saturday night, allowing winds to 
increase and shift to the north and northeast across the northern
half of the lake. 

the low should move across central illinois into indiana sunday, 
as it deepens to around 29.4 inches. this should lead to northerly
winds backing to northwesterly sunday into sunday night across the
lake. a few gales are possible during this timeframe. high 
pressure around 30.5 inches should then bring decreasing winds 
for monday.


lmz261-362-364-366-563-565-567-868-200930-
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-
853 pm cdt thu mar 19 2026

sheboygan wi to pentwater mi north...

.rest of tonight...southeast winds 5 to 10 kt increasing to 10 to
15 kt late this evening, then becoming south 10 to 20 kt after
midnight becoming southwest late. chance of rain through early
evening, then chance of rain and freezing rain overnight. patchy
fog overnight. waves 1 to 2 ft building to 2 to 4 ft. 
.friday...west winds 10 to 15 kt becoming north. patchy fog in
the morning. waves 2 to 4 ft. 
.friday night...north winds 5 to 10 kt backing to southwest.
waves 1 to 3 ft subsiding to 1 ft or less. 
.saturday...south winds 10 to 15 kt. waves 1 to 3 ft. 
.saturday night...east winds 10 to 15 kt becoming northeast 10 to
20 kt. chance of rain and snow. waves 1 to 3 ft building to 2 to
4 ft. 
.sunday...northeast winds 15 to 25 kt increasing to 30 kt. chance
of rain and snow in the morning, then chance of rain in the
afternoon. waves 4 to 6 ft occasionally to 8 ft building to 5 to
8 ft occasionally to 10 ft. 
.sunday night...north winds to 30 kt diminishing to 15 to 25 kt.
waves 5 to 8 ft occasionally to 10 ft. 
.monday...north winds 15 to 25 kt becoming northwest 10 to 20 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to 5 ft. 
.tuesday...southwest winds to 30 kt diminishing to 15 to 25 kt.
waves 5 to 8 ft occasionally to 10 ft.  

$$

fzus63 kmkx 200153
glflm 
expires:202603200930;;980826

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
853 pm cdt thu mar 19 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...

south to southwest winds are expected to develop overnight, as 
low pressure around 29.7 inches progresses southeast into northern
lower michigan. winds will shift to northwest to north friday 
morning, as a cold front shifts southeast across the lake. winds
become light friday night, as high pressure around 30.3 inches 
builds into ontario. 

low pressure around 29.5 inches develops in the lee of the 
wyoming rockies saturday morning, shifting winds south. the low 
should move southeastward saturday night, allowing winds to 
increase and shift to the north and northeast across the northern
half of the lake. 

the low should move across central illinois into indiana sunday, 
as it deepens to around 29.4 inches. this should lead to northerly
winds backing to northwesterly sunday into sunday night across the
lake. a few gales are possible during this timeframe. high 
pressure around 30.5 inches should then bring decreasing winds 
for monday.


lmz080-669-671-673-675-777-779-870-872-874-876-878-200930-
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-
853 pm cdt thu mar 19 2026

sheboygan wi to pentwater mi south...

.rest of tonight...east winds 5 to 10 kt becoming southeast 10 to
15 kt late this evening, then becoming south 10 to 20 kt after
midnight becoming southwest late. waves 1 to 2 ft building to
2 to 4 ft. 
.friday...southwest winds 10 to 20 kt veering to north. waves
2 to 4 ft. 
.friday night...north winds 10 to 15 kt veering to southeast.
patchy fog overnight. waves 1 to 3 ft subsiding to 1 to 2 ft.
.saturday...south winds 10 to 15 kt. waves 1 to 3 ft. 
.saturday night...south winds 10 to 15 kt becoming west 10 to
20 kt. waves 1 to 3 ft building to 2 to 4 ft. 
.sunday...north winds 15 to 25 kt increasing to 30 kt. waves 4 to
6 ft occasionally to 8 ft building to 6 to 9 ft occasionally to
12 ft. 
.sunday night...north winds to 30 kt. waves 7 to 10 ft
occasionally to 13 ft. 
.monday...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 7 ft
occasionally to 9 ft. 
.tuesday...south winds 15 to 25 kt. waves 4 to 7 ft occasionally
to 9 ft.  

$$