fzus63 kmkx 180826
glflm 
expires:202610181530;;299263

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
326 am cdt sun oct 18 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...

strong high pressure around 30.6 inches will slowly move east 
through the northeast us today. strong low pressure around 29.2 
inches will move eastward into hudson bay today while deepening 
to around 29.0 inches. this will bring southwest gales to far 
northern portions of lake michigan now into tonight. a gale 
warning is in effect during this period for the northern third of 
lake michigan but we have expanded the gale warning southward a
bit to include the entire north half as wind appear likely to be a
bit more expansive than originally expected. building waves are 
also expected during this period.

high pressure around 30.5 inches will then develop east-northeast
of the region this week, bringing dry conditions and light to 
modest winds.


lmz366-565-567-868-181530-
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-
326 am cdt sun oct 18 2026

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

...gale warning in effect from 7 am cdt this morning through this
evening...

.today...southwest gales to 35 kt. waves 8 to 12 ft occasionally
to 16 ft. 
.tonight...southwest gales to 35 kt diminishing to 10 to 20 kt.
waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to 10 ft
occasionally to 13 ft. 
.monday...southwest winds 10 to 20 kt diminishing to 10 to 15 kt
late in the morning, then becoming southwest 10 to 15 kt early in
the afternoon becoming south 5 to 10 kt late. waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft. 
.monday night...south winds 5 to 10 kt diminishing to less than
10 kt. waves 1 to 2 ft. 
.tuesday...southeast winds 5 to 10 kt becoming south. waves
nearly calm. 
.tuesday night...south winds 5 to 10 kt. waves 1 ft or less.
.wednesday...south winds 10 to 15 kt increasing to 10 to 20 kt.
waves 1 to 2 ft. 
.thursday...north winds 5 to 10 kt becoming northeast 10 to
15 kt. waves 1 ft or less.  

$$

fzus63 kmkx 180826
glflm 
expires:202610181530;;299264

open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
326 am cdt sun oct 18 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...

strong high pressure around 30.6 inches will slowly move east 
through the northeast us today. strong low pressure around 29.2 
inches will move eastward into hudson bay today while deepening 
to around 29.0 inches. this will bring southwest gales to far 
northern portions of lake michigan now into tonight. a gale 
warning is in effect during this period for the northern third of 
lake michigan but we have expanded the gale warning southward a
bit to include the entire north half as wind appear likely to be a
bit more expansive than originally expected. building waves are 
also expected during this period.

high pressure around 30.5 inches will then develop east-northeast
of the region this week, bringing dry conditions and light to 
modest winds.


lmz080-669-671-673-675-777-779-870-872-874-876-878-181530-
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-
326 am cdt sun oct 18 2026

sheboygan wi to pentwater mi south...

.today...southwest winds to 30 kt becoming south gales to 35 kt.
waves 8 to 11 ft occasionally to 14 ft building to 8 to 12 ft
occasionally to 16 ft. 
.tonight...south winds to 30 kt becoming southwest 10 to 20 kt.
waves 8 to 11 ft occasionally to 14 ft subsiding to 4 to 7 ft
occasionally to 9 ft. 
.monday...southwest winds 10 to 20 kt diminishing to 10 to 15 kt
late in the morning, then becoming southwest 10 to 15 kt early in
the afternoon becoming south late. waves 4 to 6 ft occasionally
to 8 ft subsiding to 1 to 3 ft. 
.monday night...south winds 5 to 10 kt becoming southeast. waves
1 to 2 ft. 
.tuesday...southeast winds 5 to 10 kt. waves 1 ft or less. 
.tuesday night...southeast winds 5 to 10 kt. waves 1 to 2 ft. 
.wednesday...south winds 10 to 15 kt. waves 1 to 2 ft. 
.thursday...east winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 ft or less.  

$$