fzus63 kmkx 120912
glflm 
expires:202611121630;;686163

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
312 am cst thu nov 12 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...

29.5 inch low pressure over the ohio river valley will advance 
into the northeastern united states today while a 30.4 inch high 
pressure builds into the canadian great plains. expect gusty 
northerly winds to exceed gale thresholds over lake michigan 
through early evening. while a few gale force gusts are possible 
in the northern third, the more persistent gales are expected for 
the southern two- thirds of the waters, where a gale warning 
remains in effect until 9 pm cst. northerly winds will remain 
steadily breezy and below gales tonight through friday as the high
moves east toward hudson bay. winds will taper sunday into monday
as a 30.2 inch high pressure builds directly over the open 
waters.

persistent north winds and cold air over the warm waters will 
cause a band of lake effect precipitation to develop and persist 
through friday evening. this band will drift east and west at 
times toward the shorelines. rain will be the predominate precip 
type, but can't rule out some snow mixing in over the northern 
half of the lake. there will also be a potential for a few 
thunderstorms with waterspouts. will be monitoring for any 
possible special marine warnings or marine weather statements.


lmz366-565-567-868-121630-
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 pentwater to manistee mi 5 nm offshore to mid
lake-
312 am cst thu nov 12 2026

sturgeon bay wi to point betsie mi south to sheboygan wi to
pentwater mi...

...gale warning in effect through this evening...

.today...north gales to 35 kt diminishing to 30 kt. slight chance
of waterspouts. rain likely this morning, then chance of rain
this afternoon. waves 12 to 16 ft occasionally to 21 ft.
.tonight...north winds to 30 kt. slight chance of waterspouts.
rain likely in the evening, then rain likely with a chance of
snow overnight. waves 8 to 11 ft occasionally to 14 ft subsiding
to 7 to 10 ft occasionally to 13 ft. 
.friday...north winds to 30 kt. chance of rain. waves 7 to 10 ft
occasionally to 13 ft. 
.friday night...north winds to 30 kt diminishing to 15 to 25 kt.
rain in the evening, then rain likely overnight. waves 6 to 9 ft
occasionally to 12 ft. 
.saturday...north winds 10 to 20 kt. rain likely in the morning,
then chance of rain in the afternoon. waves 4 to 7 ft
occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.saturday night...north winds 10 to 20 kt diminishing to 10 to
15 kt. chance of rain. waves 3 to 5 ft subsiding to 2 to 4 ft. 
.sunday...north winds 10 to 15 kt diminishing to 5 to 10 kt.
waves 1 to 3 ft. 
.monday...southwest winds 10 to 15 kt. waves 1 to 2 ft.  

$$

fzus63 kmkx 120912
glflm 
expires:202611121630;;686164

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
312 am cst thu nov 12 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...

29.5 inch low pressure over the ohio river valley will advance 
into the northeastern united states today while a 30.4 inch high 
pressure builds into the canadian great plains. expect gusty 
northerly winds to exceed gale thresholds over lake michigan 
through early evening. while a few gale force gusts are possible 
in the northern third, the more persistent gales are expected for 
the southern two- thirds of the waters, where a gale warning 
remains in effect until 9 pm cst. northerly winds will remain 
steadily breezy and below gales tonight through friday as the high
moves east toward hudson bay. winds will taper sunday into monday
as a 30.2 inch high pressure builds directly over the open 
waters.

persistent north winds and cold air over the warm waters will 
cause a band of lake effect precipitation to develop and persist 
through friday evening. this band will drift east and west at 
times toward the shorelines. rain will be the predominate precip 
type, but can't rule out some snow mixing in over the northern 
half of the lake. there will also be a potential for a few 
thunderstorms with waterspouts. will be monitoring for any 
possible special marine warnings or marine weather statements.


lmz080-669-671-673-675-777-779-870-872-874-876-878-121630-
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-
312 am cst thu nov 12 2026

sheboygan wi to pentwater mi south...

...gale warning in effect through this evening...

.today...north gales to 35 kt. slight chance of waterspouts. rain
likely. waves 14 to 18 ft occasionally to 23 ft. 
.tonight...north gales to 35 kt diminishing to 30 kt. slight
chance of waterspouts. chance of rain in the evening, then rain
likely overnight. waves 12 to 16 ft occasionally to 21 ft
subsiding to 8 to 12 ft occasionally to 16 ft. 
.friday...north winds to 30 kt. chance of waterspouts. chance of
rain. waves 10 to 14 ft occasionally to 18 ft. 
.friday night...north winds to 30 kt diminishing to 15 to 25 kt.
rain. waves 10 to 14 ft occasionally to 18 ft subsiding to 7 to
10 ft occasionally to 13 ft. 
.saturday...north winds 15 to 25 kt diminishing to 10 to 20 kt.
rain likely in the morning, then chance of rain in the afternoon.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.saturday night...north winds 10 to 20 kt diminishing to 10 to
15 kt. chance of rain. waves 4 to 6 ft occasionally to 8 ft
subsiding to 3 to 5 ft. 
.sunday...north winds 10 to 15 kt diminishing to 5 to 10 kt.
waves 2 to 4 ft. 
.monday...southwest winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 2 ft.  

$$