fzus63 kmkx 162051
glflm 
expires:202512170430;;699579

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
251 pm cst tue dec 16 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...

high pressure around 30.3 inches will linger across the southeast
u.s. through wednesday. meanwhile, low pressure of 29.0 inches
currently over southwestern ontario will lift into western quebec
tonight, leading to continued gales across the northern two-thirds
of the open waters through early wednesday morning. a gale warning
is in effect. winds will veer westerly then northwesterly and
diminish into early wednesday morning behind a cold front. light
winds then are expected through wednesday afternoon.

low pressure around 29.1 inches then tracks eastward along the
canadian border wednesday night into thursday, bringing southerly
gales once again late wednesday night into thursday morning. a
brief period of lighter winds is expected thursday morning into
thursday afternoon as low pressure crosses the upper peninsula of
michigan. winds turn westerly, then northwesterly thursday
evening, with gales returning to the southern half of the open
waters early thursday evening. northwesterly gales will return to
the northern half late thursday night. gale watches are in effect
for each area for these time frames. winds will diminish below
gale force friday morning and become light and variable.

friday night, another low pressure system swings through southern
canada, bringing gusty south-southwest winds once again. gales are
possible, but confidence is lower with timing and intensity at
this time.


lmz261-362-364-366-563-565-170430-
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-
251 pm cst tue dec 16 2025

two rivers wi to manistee mi north...

...gale warning in effect through late tonight...
...gale watch in effect from wednesday evening through thursday
morning...

.tonight...southwest gales to 40 kt becoming west gales to 35 kt
after midnight, then becoming northwest to 30 kt late. waves
10 to 14 ft occasionally to 18 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.wednesday...northwest winds to 30 kt diminishing to 10 to 20 kt
late in the morning, then becoming west early in the afternoon
becoming southwest late. waves 5 to 8 ft occasionally to 10 ft
subsiding to 2 to 4 ft. 
.wednesday night...south winds to 30 kt increasing to gales to
40 kt. waves 4 to 6 ft occasionally to 8 ft building to 12 to
16 ft occasionally to 21 ft. 
.thursday...south gales to 40 kt becoming southwest to 30 kt in
the afternoon. rain. waves 12 to 16 ft occasionally to 21 ft
subsiding to 8 to 11 ft occasionally to 14 ft. 
.thursday night...west gales to 35 kt becoming northwest gales to
40 kt. snow likely in the evening, then chance of snow overnight.
freezing spray overnight. waves 7 to 10 ft occasionally to 13 ft
building to 8 to 11 ft occasionally to 14 ft. 
.friday...northwest gales to 40 kt diminishing to 15 to 25 kt in
the afternoon. freezing spray in the morning. waves 8 to 11 ft
occasionally to 14 ft subsiding to 4 to 7 ft occasionally to
9 ft. 
.friday night...southwest winds 15 to 25 kt becoming south to
30 kt. chance of snow. waves 4 to 7 ft occasionally to 9 ft
building to 8 to 11 ft occasionally to 14 ft. 
.saturday...southwest winds to 30 kt becoming west. chance of
snow. waves 8 to 12 ft occasionally to 16 ft subsiding to 8 to
11 ft occasionally to 14 ft. 
.sunday...northwest winds 15 to 25 kt diminishing to 10 to 20 kt.
waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.  

$$

fzus63 kmkx 162051
glflm 
expires:202512170430;;699580

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
251 pm cst tue dec 16 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...

high pressure around 30.3 inches will linger across the southeast
u.s. through wednesday. meanwhile, low pressure of 29.0 inches
currently over southwestern ontario will lift into western quebec
tonight, leading to continued gales across the northern two-thirds
of the open waters through early wednesday morning. a gale warning
is in effect. winds will veer westerly then northwesterly and
diminish into early wednesday morning behind a cold front. light
winds then are expected through wednesday afternoon.

low pressure around 29.1 inches then tracks eastward along the
canadian border wednesday night into thursday, bringing southerly
gales once again late wednesday night into thursday morning. a
brief period of lighter winds is expected thursday morning into
thursday afternoon as low pressure crosses the upper peninsula of
michigan. winds turn westerly, then northwesterly thursday
evening, with gales returning to the southern half of the open
waters early thursday evening. northwesterly gales will return to
the northern half late thursday night. gale watches are in effect
for each area for these time frames. winds will diminish below
gale force friday morning and become light and variable.

friday night, another low pressure system swings through southern
canada, bringing gusty south-southwest winds once again. gales are
possible, but confidence is lower with timing and intensity at
this time.


lmz567-868-170430-
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-
251 pm cst tue dec 16 2025

two rivers wi to manistee mi south to sheboygan wi to pentwater
mi...

...gale warning in effect through late tonight...
...gale watch in effect from wednesday evening through friday
morning...

.tonight...southwest gales to 35 kt becoming west to 30 kt. waves
8 to 12 ft occasionally to 16 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.wednesday...northwest winds 15 to 25 kt diminishing to 10 to
15 kt late in the morning, then becoming west 5 to 10 kt early in
the afternoon becoming south 10 to 20 kt late. waves 5 to 8 ft
occasionally to 10 ft subsiding to 1 to 3 ft. 
.wednesday night...south winds to 30 kt increasing to gales to
40 kt. waves 4 to 6 ft occasionally to 8 ft building to 10 to
14 ft occasionally to 18 ft. 
.thursday...south gales to 35 kt becoming southwest to 30 kt.
rain in the morning, then rain and snow likely in the afternoon.
waves 10 to 14 ft occasionally to 18 ft subsiding to 8 to 11 ft
occasionally to 14 ft. 
.thursday night...west gales to 40 kt becoming northwest. snow
likely in the evening, then chance of snow overnight. freezing
spray overnight. waves 8 to 11 ft occasionally to 14 ft building
to 8 to 12 ft occasionally to 16 ft. 
.friday...northwest gales to 35 kt becoming west 15 to 25 kt in
the afternoon. freezing spray in the morning. waves 8 to 12 ft
occasionally to 16 ft subsiding to 5 to 8 ft occasionally to
10 ft. 
.friday night...southwest winds 15 to 25 kt becoming south to
30 kt. waves 4 to 7 ft occasionally to 9 ft building to 8 to
11 ft occasionally to 14 ft. 
.saturday...southwest winds to 30 kt becoming west 20 to 25 kt.
chance of snow. waves 8 to 12 ft occasionally to 16 ft subsiding
to 8 to 11 ft occasionally to 14 ft. 
.sunday...northwest winds 10 to 20 kt. waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft.  

$$

fzus63 kmkx 162051
glflm 
expires:202512170430;;699581

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
251 pm cst tue dec 16 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...

high pressure around 30.3 inches will linger across the southeast
u.s. through wednesday. meanwhile, low pressure of 29.0 inches
currently over southwestern ontario will lift into western quebec
tonight, leading to continued gales across the northern two-thirds
of the open waters through early wednesday morning. a gale warning
is in effect. winds will veer westerly then northwesterly and
diminish into early wednesday morning behind a cold front. light
winds then are expected through wednesday afternoon.

low pressure around 29.1 inches then tracks eastward along the
canadian border wednesday night into thursday, bringing southerly
gales once again late wednesday night into thursday morning. a
brief period of lighter winds is expected thursday morning into
thursday afternoon as low pressure crosses the upper peninsula of
michigan. winds turn westerly, then northwesterly thursday
evening, with gales returning to the southern half of the open
waters early thursday evening. northwesterly gales will return to
the northern half late thursday night. gale watches are in effect
for each area for these time frames. winds will diminish below
gale force friday morning and become light and variable.

friday night, another low pressure system swings through southern
canada, bringing gusty south-southwest winds once again. gales are
possible, but confidence is lower with timing and intensity at
this time.


lmz669-671-673-870-872-874-170430-
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 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-
251 pm cst tue dec 16 2025

sheboygan wi to pentwater mi south to wind point wi to holland
mi...

...gale warning in effect through late tonight...
...gale watch in effect from wednesday evening through friday
morning...

.tonight...southwest gales to 35 kt becoming west to 30 kt. waves
8 to 12 ft occasionally to 16 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.wednesday...northwest winds 15 to 25 kt diminishing to 10 to
20 kt late in the morning, then becoming west 10 to 15 kt early
in the afternoon becoming south 10 to 20 kt late. waves 6 to 9 ft
occasionally to 12 ft subsiding to 2 to 4 ft. 
.wednesday night...south winds to 30 kt increasing to gales to
40 kt. chance of rain overnight. waves 4 to 6 ft occasionally to
8 ft building to 10 to 14 ft occasionally to 18 ft. 
.thursday...south gales to 35 kt becoming southwest. rain in the
morning, then rain and snow likely in the afternoon. waves 10 to
14 ft occasionally to 18 ft. 
.thursday night...west gales to 40 kt becoming northwest. snow
likely with rain in the evening, then chance of snow overnight.
freezing spray overnight. waves 10 to 14 ft occasionally to
18 ft. 
.friday...northwest gales to 40 kt becoming west to 30 kt in the
afternoon. freezing spray in the morning. waves 10 to 14 ft
occasionally to 18 ft subsiding to 7 to 10 ft occasionally to
13 ft. 
.friday night...southwest winds to 30 kt becoming south. waves
4 to 7 ft occasionally to 9 ft building to 8 to 12 ft
occasionally to 16 ft. 
.saturday...southwest winds to 30 kt becoming west. waves 8 to
12 ft occasionally to 16 ft. 
.sunday...northwest winds 10 to 20 kt. waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft.  

$$

fzus63 kmkx 162051
glflm 
expires:202512170430;;699582

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
251 pm cst tue dec 16 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...

high pressure around 30.3 inches will linger across the southeast
u.s. through wednesday. meanwhile, low pressure of 29.0 inches
currently over southwestern ontario will lift into western quebec
tonight, leading to continued gales across the northern two-thirds
of the open waters through early wednesday morning. a gale warning
is in effect. winds will veer westerly then northwesterly and
diminish into early wednesday morning behind a cold front. light
winds then are expected through wednesday afternoon.

low pressure around 29.1 inches then tracks eastward along the
canadian border wednesday night into thursday, bringing southerly
gales once again late wednesday night into thursday morning. a
brief period of lighter winds is expected thursday morning into
thursday afternoon as low pressure crosses the upper peninsula of
michigan. winds turn westerly, then northwesterly thursday
evening, with gales returning to the southern half of the open
waters early thursday evening. northwesterly gales will return to
the northern half late thursday night. gale watches are in effect
for each area for these time frames. winds will diminish below
gale force friday morning and become light and variable.

friday night, another low pressure system swings through southern
canada, bringing gusty south-southwest winds once again. gales are
possible, but confidence is lower with timing and intensity at
this time.


lmz080-675-777-779-876-878-170430-
lake michigan from michigan city in to st. joseph mi 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 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-
251 pm cst tue dec 16 2025

wind point wi to holland mi south...

...gale watch in effect from wednesday evening through friday
morning...

.tonight...southwest gales to 35 kt becoming west to 30 kt. waves
8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft
occasionally to 12 ft. 
.wednesday...northwest winds 15 to 25 kt diminishing to 10 to
20 kt late in the morning, then becoming west 10 to 15 kt early
in the afternoon becoming south 10 to 20 kt late. waves 5 to 8 ft
occasionally to 10 ft subsiding to 2 to 4 ft. 
.wednesday night...south winds 15 to 25 kt increasing to gales to
35 kt. chance of rain overnight. waves 3 to 5 ft building to 7 to
10 ft occasionally to 13 ft. 
.thursday...south gales to 35 kt becoming southwest. rain in the
morning, then rain likely in the afternoon. waves 7 to 10 ft
occasionally to 13 ft. 
.thursday night...west gales to 40 kt. chance of snow and rain
likely in the evening, then chance of snow overnight. freezing
spray overnight. waves 10 to 14 ft occasionally to 18 ft. 
.friday...northwest gales to 40 kt becoming west to 30 kt in the
afternoon. freezing spray in the morning. waves 10 to 14 ft
occasionally to 18 ft subsiding to 7 to 10 ft occasionally to
13 ft. 
.friday night...southwest winds 15 to 25 kt becoming south to
30 kt. waves 4 to 7 ft occasionally to 9 ft building to 7 to
10 ft occasionally to 13 ft. 
.saturday...southwest winds to 30 kt. waves 8 to 11 ft
occasionally to 14 ft. 
.sunday...northwest winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft
occasionally to 8 ft.  

$$