fzus63 kmkx 120216
glflm 
expires:202609120930;;301615

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
916 pm cdt fri sep 11 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...

southerly winds will continue to increase overnight, as a cold
front approaches the region from the west. winds will shift out 
of the west northwest during the day saturday, as the cold front 
moves across the lake. expecting wind gusts to remain primarily in
the 25 to 30 knot range overnight through saturday, though a few
gusts approaching gale force may occur. currently anticipating 
any such gusts to remain brief and isolated enough to preclude the
need for gale warnings, but will continue to monitor trends. 
isolated showers and thunderstorms are possible ahead of the 
approaching cold front, mainly over northern portions of the lake. 

high pressure around 30.2 inches will build in from the northern 
great plains sunday night into monday, bringing decreasing winds 
saturday night through sunday, and light and variable winds 
sunday night into monday. the high will move east of the waters 
monday afternoon and evening, resulting in a south southeast wind
shift. 

winds will increase further and veer south southwest monday night
into tuesday, as low pressure around 29.4 inches develops over 
manitoba. gales continue to appear likely during this time frame, 
with headlines becoming necessary in later forecasts if trends 
continue to hold. periods of showers and thunderstorms will 
accompany the developing low from as early as monday evening 
through at least tuesday afternoon. widespread severe weather 
hazards appear low over lake michigan at this time, though an 
isolated stronger storm with gusty winds may occur. winds will 
trend northerly behind a cold front tuesday night into wednesday, 
steadily tapering away from gale force thresholds in the process.


lmz261-362-364-366-563-565-567-868-120930-
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-
916 pm cdt fri sep 11 2026

sheboygan wi to pentwater mi north...

.rest of tonight...south winds to 30 kt diminishing to 15 to
25 kt. waves 4 to 6 ft occasionally to 8 ft. 
.saturday...south winds to 30 kt veering to west. slight chance
of showers in the morning, then chance of showers in the
afternoon. waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft. 
.saturday night...northwest winds 10 to 20 kt. waves 2 to 4 ft. 
.sunday...northwest winds 10 to 20 kt increasing to 15 to 25 kt.
waves 2 to 4 ft. 
.sunday night...north winds 10 to 20 kt becoming northeast 10 to
15 kt. waves 2 to 4 ft. 
.monday...east winds 15 to 25 kt becoming southeast gales to
35 kt in the afternoon. waves 1 to 3 ft building to 4 to 7 ft
occasionally to 9 ft. 
.monday night...south gales to 40 kt. showers. waves 12 to 16 ft
occasionally to 21 ft. 
.tuesday...southwest gales to 40 kt becoming west gales to 35 kt.
chance of showers. waves 12 to 16 ft occasionally to 21 ft
subsiding to 8 to 11 ft occasionally to 14 ft. 
.wednesday...northeast winds 10 to 20 kt. waves 1 to 3 ft.  

$$

fzus63 kmkx 120216
glflm 
expires:202609120930;;301616

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
916 pm cdt fri sep 11 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...

southerly winds will continue to increase overnight, as a cold
front approaches the region from the west. winds will shift out 
of the west northwest during the day saturday, as the cold front 
moves across the lake. expecting wind gusts to remain primarily in
the 25 to 30 knot range overnight through saturday, though a few
gusts approaching gale force may occur. currently anticipating 
any such gusts to remain brief and isolated enough to preclude the
need for gale warnings, but will continue to monitor trends. 
isolated showers and thunderstorms are possible ahead of the 
approaching cold front, mainly over northern portions of the lake. 

high pressure around 30.2 inches will build in from the northern 
great plains sunday night into monday, bringing decreasing winds 
saturday night through sunday, and light and variable winds 
sunday night into monday. the high will move east of the waters 
monday afternoon and evening, resulting in a south southeast wind
shift. 

winds will increase further and veer south southwest monday night
into tuesday, as low pressure around 29.4 inches develops over 
manitoba. gales continue to appear likely during this time frame, 
with headlines becoming necessary in later forecasts if trends 
continue to hold. periods of showers and thunderstorms will 
accompany the developing low from as early as monday evening 
through at least tuesday afternoon. widespread severe weather 
hazards appear low over lake michigan at this time, though an 
isolated stronger storm with gusty winds may occur. winds will 
trend northerly behind a cold front tuesday night into wednesday, 
steadily tapering away from gale force thresholds in the process.


lmz080-669-671-673-675-777-779-870-872-874-876-878-120930-
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-
916 pm cdt fri sep 11 2026

sheboygan wi to pentwater mi south...

.rest of tonight...southeast winds 10 to 20 kt becoming south
15 to 25 kt. waves 3 to 5 ft. 
.saturday...south winds 15 to 25 kt becoming southwest 10 to
20 kt. waves 4 to 6 ft occasionally to 8 ft. 
.saturday night...northwest winds 10 to 20 kt becoming north.
waves 3 to 5 ft. 
.sunday...north winds 10 to 20 kt. waves 3 to 5 ft. 
.sunday night...north winds 10 to 20 kt becoming northeast. waves
3 to 5 ft subsiding to 2 to 4 ft. 
.monday...east winds to 30 kt becoming southeast gales to 40 kt
in the afternoon. waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft. 
.monday night...southeast gales to 40 kt becoming south. chance
of showers. waves 8 to 12 ft occasionally to 16 ft building to
10 to 14 ft occasionally to 18 ft. 
.tuesday...southwest gales to 35 kt becoming west to 30 kt.
showers likely. waves 10 to 14 ft occasionally to 18 ft subsiding
to 7 to 10 ft occasionally to 13 ft. 
.wednesday...northeast winds 10 to 20 kt. chance of showers.
waves 2 to 4 ft.  

$$