fzus63 kmkx 172006
glflm 
expires:202607180330;;137504

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
306 pm cdt fri jul 17 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...

wildfire smoke from northern minnesota and northwestern ontario 
will continue across all of the open waters of lake michigan into 
early this evening. it will linger over the northern half of the 
open waters until 1 am cdt saturday. the dense smoke reduce 
visibility to 1 nautical mile or less at times. thus, the marine 
dense smoke advisory continues until early this evening for the 
southern half of lake michigan, and until 1 am cdt saturday for 
the northern half. 

southerly winds continue through tonight, as low pressure around 
29.6 inches moves east across lake superior. this low pressure 
system is expected to drag a cold front southward across the lake 
on saturday, with the front pushing south of the lake by saturday 
night. breezy southerly winds are expected ahead of the front, 
with the strongest winds expected over the northern end of lake 
michigan. winds then quickly veer northwesterly and northerly 
following the frontal passage on saturday. north gusts may 
approach 30 knots, particularly over the southern half of the 
lake. 

winds then quickly taper saturday night, as high pressure around 
30.1 inches moves over the northern great lakes. northeast to 
light and variable winds are then expected through sunday into 
sunday night. gusty south to southwest winds may then develop 
monday into monday night, with gusty west to northwest winds 
possible into the middle of next week.


lmz261-362-364-366-563-565-567-868-180330-
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-
306 pm cdt fri jul 17 2026

sheboygan wi to pentwater mi north...

...dense smoke advisory in effect until 10 pm cdt this evening...

.tonight...south winds 15 to 25 kt becoming southwest to 30 kt.
areas of smoke this evening, then patchy smoke overnight. chance
of showers and thunderstorms this evening, then chance of showers
and slight chance of thunderstorms overnight. waves 1 to 3 ft
building to 3 to 5 ft. 
.saturday...west winds 15 to 25 kt becoming north to 30 kt.
patchy smoke in the morning, then areas of smoke in the
afternoon. waves 4 to 6 ft occasionally to 8 ft. 
.saturday night...north winds to 30 kt becoming northeast 10 to
15 kt. smoke in the evening. waves 4 to 6 ft occasionally to 8 ft
subsiding to 2 to 4 ft. 
.sunday...northeast winds 5 to 10 kt veering to southwest 10 to
20 kt in the afternoon. waves 1 to 3 ft. 
.sunday night...south winds 10 to 20 kt becoming southwest 15 to
25 kt. waves 1 to 2 ft building to 2 to 4 ft. 
.monday...southwest gales to 35 kt increasing to gales to 40 kt.
showers likely in the morning, then showers likely with a chance
of thunderstorms in the afternoon. waves 4 to 6 ft occasionally
to 8 ft building to 6 to 9 ft occasionally to 12 ft. 
.monday night...southwest gales to 35 kt becoming west to 30 kt.
chance of showers. waves 6 to 9 ft occasionally to 12 ft. 
.tuesday...northwest winds to 30 kt increasing to gales to 40 kt.
waves 4 to 7 ft occasionally to 9 ft building to 5 to 8 ft
occasionally to 10 ft. 
.wednesday...northwest gales to 35 kt. waves 8 to 11 ft
occasionally to 14 ft subsiding to 6 to 9 ft occasionally to
12 ft.  

$$

fzus63 kmkx 172006
glflm 
expires:202607180330;;137505

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
306 pm cdt fri jul 17 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...

wildfire smoke from northern minnesota and northwestern ontario 
will continue across all of the open waters of lake michigan into 
early this evening. it will linger over the northern half of the 
open waters until 1 am cdt saturday. the dense smoke reduce 
visibility to 1 nautical mile or less at times. thus, the marine 
dense smoke advisory continues until early this evening for the 
southern half of lake michigan, and until 1 am cdt saturday for 
the northern half. 

southerly winds continue through tonight, as low pressure around 
29.6 inches moves east across lake superior. this low pressure 
system is expected to drag a cold front southward across the lake 
on saturday, with the front pushing south of the lake by saturday 
night. breezy southerly winds are expected ahead of the front, 
with the strongest winds expected over the northern end of lake 
michigan. winds then quickly veer northwesterly and northerly 
following the frontal passage on saturday. north gusts may 
approach 30 knots, particularly over the southern half of the 
lake. 

winds then quickly taper saturday night, as high pressure around 
30.1 inches moves over the northern great lakes. northeast to 
light and variable winds are then expected through sunday into 
sunday night. gusty south to southwest winds may then develop 
monday into monday night, with gusty west to northwest winds 
possible into the middle of next week.


lmz080-669-671-673-675-777-779-870-872-874-876-878-180330-
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-
306 pm cdt fri jul 17 2026

sheboygan wi to pentwater mi south...

...dense smoke advisory in effect until 7 pm cdt this evening...

.tonight...south winds 10 to 20 kt becoming southwest 15 to
25 kt. areas of smoke this evening. slight chance of
thunderstorms with isolated showers this evening. waves 2 to
4 ft. 
.saturday...west winds 15 to 25 kt veering to north to 30 kt.
chance of showers and slight chance of thunderstorms in the
morning, then chance of showers and thunderstorms in the
afternoon. patchy smoke in the afternoon. waves 3 to 5 ft
building to 4 to 7 ft occasionally to 9 ft. 
.saturday night...north winds to 30 kt becoming northeast 10 to
20 kt. patchy smoke in the evening. waves 4 to 7 ft occasionally
to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft. 
.sunday...northeast winds 10 to 15 kt becoming north 10 to 20 kt.
waves 3 to 5 ft subsiding to 1 to 3 ft. 
.sunday night...southeast winds 10 to 15 kt becoming south 10 to
20 kt. waves 1 to 2 ft building to 1 to 3 ft. 
.monday...south winds to 30 kt increasing to gales to 35 kt.
chance of showers in the morning, then chance of showers and
thunderstorms in the afternoon. waves 4 to 6 ft occasionally to
8 ft building to 5 to 8 ft occasionally to 10 ft. 
.monday night...southwest gales to 35 kt diminishing to 30 kt.
showers likely with a chance of thunderstorms. waves 5 to 8 ft
occasionally to 10 ft. 
.tuesday...west winds to 30 kt becoming northwest gales to 35 kt.
waves 4 to 7 ft occasionally to 9 ft building to 5 to 8 ft
occasionally to 10 ft. 
.wednesday...northwest gales to 35 kt becoming north. waves 8 to
12 ft occasionally to 16 ft.  

$$