fzus63 kmkx 150837
glflm 
expires:202601151615;;378432

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
237 am cst thu jan 15 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...

winds will continue to decrease across the open waters today as 
30.1 inch high pressure moves across lake michigan. low pressure 
of 29.5 inches will build into the upper mississippi river valley 
this evening, resulting in increasing southwesterly winds across 
the waters. generally west to northwesterly winds and periods of 
25-30 knot gusts will continue through the day sunday. 

a cold front is forecast to cross lake michigan at some point sunday 
night into monday morning, bringing northwesterly winds to the 
open waters. there is increasing potential for gales late sunday 
night into at least monday afternoon, particularly across the 
southern half of lake michigan. 

moderate freezing spray will remain a concern through sunday.
following the frontal passage sunday into monday, gusty winds
and even colder air will result in the potential for widespread
heavy freezing spray. 


lmz261-362-364-366-563-565-567-868-151615-
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-
237 am cst thu jan 15 2026

sheboygan wi to pentwater mi north...

.today...north winds 15 to 25 kt diminishing to 10 to 20 kt late
this morning, then becoming west 10 to 15 kt early this afternoon
becoming southwest late. freezing spray this morning. waves 7 to
10 ft occasionally to 13 ft subsiding to 2 to 4 ft. 
.tonight...southwest winds 10 to 20 kt increasing to 15 to 25 kt.
chance of snow in the evening, then snow likely overnight. waves
2 to 4 ft building to 5 to 8 ft occasionally to 10 ft. 
.friday...southwest winds 10 to 20 kt becoming west. snow in the
morning, then chance of snow in the afternoon. waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft. 
.friday night...west winds 10 to 20 kt becoming northwest. chance
of snow. waves 4 to 6 ft occasionally to 8 ft. 
.saturday...northwest winds 10 to 20 kt. chance of snow. waves
4 to 6 ft occasionally to 8 ft. 
.saturday night...northwest winds 15 to 25 kt diminishing to
10 to 20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.sunday...west winds 15 to 25 kt. chance of snow. waves 4 to 6 ft
occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft. 
.monday...northwest gales to 35 kt. heavy freezing spray. chance
of snow. waves 8 to 11 ft occasionally to 14 ft.  

$$

fzus63 kmkx 150837
glflm 
expires:202601151615;;378433

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
237 am cst thu jan 15 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...

winds will continue to decrease across the open waters today as 
30.1 inch high pressure moves across lake michigan. low pressure 
of 29.5 inches will build into the upper mississippi river valley 
this evening, resulting in increasing southwesterly winds across 
the waters. generally west to northwesterly winds and periods of 
25-30 knot gusts will continue through the day sunday. 

a cold front is forecast to cross lake michigan at some point sunday 
night into monday morning, bringing northwesterly winds to the 
open waters. there is increasing potential for gales late sunday 
night into at least monday afternoon, particularly across the 
southern half of lake michigan. 

moderate freezing spray will remain a concern through sunday.
following the frontal passage sunday into monday, gusty winds
and even colder air will result in the potential for widespread
heavy freezing spray. 


lmz080-669-671-673-675-777-779-870-872-874-876-878-151615-
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-
237 am cst thu jan 15 2026

sheboygan wi to pentwater mi south...

.today...north winds to 30 kt becoming northwest 10 to 20 kt late
this morning, then becoming west early this afternoon becoming
southwest 10 to 15 kt late. freezing spray this morning. chance
of snow this morning, then slight chance of snow this afternoon.
waves 10 to 14 ft occasionally to 18 ft subsiding to 4 to 6 ft
occasionally to 8 ft. 
.tonight...southwest winds 15 to 25 kt increasing to 30 kt.
chance of snow in the evening, then snow likely with slight
chance of light freezing drizzle overnight. waves 3 to 5 ft
building to 6 to 9 ft occasionally to 12 ft. 
.friday...southwest winds to 30 kt becoming west 15 to 25 kt.
snow likely in the morning, then chance of snow in the afternoon.
waves 7 to 10 ft occasionally to 13 ft. 
.friday night...west winds 15 to 25 kt diminishing to 10 to
20 kt. chance of snow. waves 5 to 8 ft occasionally to 10 ft. 
.saturday...west winds 15 to 25 kt. freezing spray in the
morning. chance of snow in the morning, then snow likely in the
afternoon. waves 4 to 7 ft occasionally to 9 ft. 
.saturday night...west winds 15 to 25 kt. freezing spray. chance
of snow. waves 5 to 8 ft occasionally to 10 ft. 
.sunday...west winds 15 to 25 kt becoming southwest to 30 kt.
freezing spray. chance of snow. waves 6 to 9 ft occasionally to
12 ft. 
.monday...northwest gales to 40 kt. heavy freezing spray. chance
of snow. waves 10 to 14 ft occasionally to 18 ft.  

$$