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open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
851 pm cst thu nov 27 2025

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 29.4 inches over western quebec will slowly move
eastward through friday with some weakening. northwest winds
continue. occasional gale force gusts will continue over the 
northern third of the lake through around midnight (thanksgiving 
night), remaining gusty but just shy of gale force through friday 
morning then gradually decelerating friday afternoon. a ridge of 
high pressure will then move across the lake friday night with 
light and variable winds expected. 

low pressure of 29.8 inches will then track from eastern kansas 
saturday morning to the southern tip of lake michigan saturday 
night, and then reach lake huron by mid sunday while deepening to
29.7 inches. widespread, moderate to heavy snow will overspread 
the south half of lake michigan. brisk southeast winds saturday 
will become easterly and then westerly as the low crosses the 
great lakes region. gales are not anticipated at this time, 
although a period of gusty northwest winds is expected sunday.


lmz080-366-565-567-669-671-673-675-777-779-868-870-872-874-876-
878-281030-
lake michigan from michigan city in to st. joseph mi 5 nm
offshore to mid lake-
lake michigan from point betsie to manistee mi 5 nm offshore to
mid lake-
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 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 pentwater to manistee mi 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-
851 pm cst thu nov 27 2025

sturgeon bay wi to point betsie mi south...

.rest of tonight...northwest winds to around 30 kt. a few gusts to
gale force possible. scattered snow showers over eastern portions
of the lake. waves 8 to 12 ft occasionally to 16 ft.
.friday...northwest winds to 30 kt diminishing to 10 to 20 kt.
scattered snow showers over eastern portions of the lake. waves 7
to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft 
occasionally to 9 ft.
.friday night...northwest winds 10 to 20 kt diminishing to 5 to
10 kt late in the evening, then becoming west after midnight
becoming southwest late. chance of snow. waves 3 to 5 ft
subsiding to 1 to 2 ft. 
.saturday...south winds 10 to 20 kt becoming southeast to 30 kt
in the afternoon. snow. waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft. 
.saturday night...southeast winds to 30 kt becoming east 15 to
25 kt. snow. waves 6 to 9 ft occasionally to 12 ft subsiding to
4 to 7 ft occasionally to 9 ft. 
.sunday...northwest winds to 30 kt. snow in the morning, then
chance of snow in the afternoon. waves 7 to 10 ft occasionally to
13 ft building to 8 to 12 ft occasionally to 16 ft. 
.sunday night...northwest winds to 30 kt diminishing to 10 to
20 kt. chance of snow showers. waves 8 to 12 ft occasionally to
16 ft subsiding to 5 to 8 ft occasionally to 10 ft. 
.monday...west winds 10 to 15 kt increasing to 10 to 20 kt. waves
3 to 5 ft subsiding to 2 to 4 ft. 
.tuesday...west winds 10 to 20 kt. waves 3 to 5 ft.  

$$