(1/4)
Latest Great Lakes Marine Forecast by KMKX
Issued 10/6/2026 10:16 PM US/Central.
Valid through 10/7/2026 4:30 AM US/Central.
fzus63 kmkx 070316 aaa
glflm
expires:202610070930;;658953
open lake forecast for lake michigan...updated
national weather service milwaukee/sullivan wi
1016 pm cdt tue oct 6 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...
gusty south southwest winds are a result of low pressure around
29.4 inches tracking across northern ontario. a cold front
extending southward from this low will move across the lake
overnight into wednesday morning. this will turn winds briefly to
the northwest wednesday morning, before becoming west by the
afternoon.
west to northwest winds will settle across the lake wednesday
night into thursday, as high pressure around 30.1 inches moves
into the northern plains. winds will once again become southerly
later friday into friday night, as the high departs the upper
great lakes and low pressure around 29.2 inches approaches from
the northern plains.
lmz261-362-364-366-563-565-567-868-070930-
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-
1016 pm cdt tue oct 6 2026
sheboygan wi to pentwater mi north...
.rest of tonight...southwest winds to 30 kt, then becoming west
10 to 20 kt late. waves 7 to 10 ft occasionally to 13 ft subsiding
to 6 to 9 ft occasionally to 12 ft.
.wednesday...northwest winds 10 to 20 kt becoming southwest 15 to
25 kt. slight chance of showers in the afternoon. waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft.
.wednesday night...west winds 15 to 25 kt becoming northwest.
waves 3 to 5 ft.
.thursday...northwest winds 15 to 25 kt. waves 3 to 5 ft.
.thursday night...northwest winds 10 to 20 kt becoming west 10 to
15 kt. waves 2 to 4 ft.
.friday...west winds 10 to 20 kt increasing to 15 to 25 kt. waves
1 to 2 ft building to 2 to 4 ft.
.friday night...south winds 10 to 20 kt increasing to 15 to
25 kt. waves 3 to 5 ft building to 4 to 7 ft occasionally to
9 ft.
.saturday...south winds to 30 kt increasing to gales to 35 kt.
waves 7 to 10 ft occasionally to 13 ft.
.sunday...southwest winds to 30 kt. waves 5 to 8 ft occasionally
to 10 ft subsiding to 4 to 7 ft occasionally to 9 ft.
$$
(2/4)
Latest Great Lakes Marine Forecast by KMKX
Issued 10/6/2026 10:16 PM US/Central.
Valid through 10/7/2026 4:30 AM US/Central.
fzus63 kmkx 070316 aaa
glflm
expires:202610070930;;658954
open lake forecast for lake michigan...updated
national weather service milwaukee/sullivan wi
1016 pm cdt tue oct 6 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...
gusty south southwest winds are a result of low pressure around
29.4 inches tracking across northern ontario. a cold front
extending southward from this low will move across the lake
overnight into wednesday morning. this will turn winds briefly to
the northwest wednesday morning, before becoming west by the
afternoon.
west to northwest winds will settle across the lake wednesday
night into thursday, as high pressure around 30.1 inches moves
into the northern plains. winds will once again become southerly
later friday into friday night, as the high departs the upper
great lakes and low pressure around 29.2 inches approaches from
the northern plains.
lmz080-669-671-673-675-777-779-870-872-874-876-878-070930-
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-
1016 pm cdt tue oct 6 2026
sheboygan wi to pentwater mi south...
.rest of tonight...southwest winds to 30 kt becoming west 15 to
25 kt. waves 7 to 10 ft occasionally to 13 ft.
.wednesday...west winds 10 to 20 kt. waves 4 to 7 ft occasionally
to 9 ft subsiding to 3 to 5 ft.
.wednesday night...west winds 15 to 25 kt becoming northwest.
waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
.thursday...northwest winds 15 to 25 kt. waves 4 to 7 ft
occasionally to 9 ft.
.thursday night...northwest winds 10 to 20 kt becoming west 10 to
15 kt. waves 3 to 5 ft.
.friday...west winds 10 to 20 kt becoming southwest. waves 1 to
3 ft building to 3 to 5 ft.
.friday night...south winds 10 to 20 kt increasing to 15 to
25 kt. waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft
occasionally to 9 ft.
.saturday...south winds to 30 kt increasing to gales to 35 kt.
waves 7 to 10 ft occasionally to 13 ft.
.sunday...south winds 15 to 25 kt. waves 4 to 7 ft occasionally
to 9 ft.
$$
(3/4)
Latest Great Lakes Marine Forecast by KMKX
Issued 10/6/2026 9:09 PM US/Central.
Valid through 10/7/2026 4:15 AM US/Central.
fzus63 kmkx 070209
glflm
expires:202610070915;;656595
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
909 pm cdt tue oct 6 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 gales over the northern half of lake michigan are
expected to drop below gale force by later this evening. the
gusty winds are a result of low pressure around 29.4 inches
tracking across northern ontario. a cold front extending southward
from this low will move across the lake overnight into wednesday
morning. this will turn winds briefly to the northwest wednesday
morning, before becoming west by the afternoon.
west to northwest winds will settle across the lake wednesday
night into thursday, as high pressure around 30.1 inches moves
into the northern plains. winds will once again become southerly
later friday into friday night, as the high departs the upper
great lakes and low pressure around 29.2 inches approaches from
the northern plains.
lmz366-565-567-669-868-870-070915-
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 sheboygan to port washington wi 5 nm offshore
to mid lake-
lake michigan from pentwater to manistee mi 5 nm offshore to mid
lake-
lake michigan from whitehall to pentwater mi 5 nm offshore to mid
lake-
909 pm cdt tue oct 6 2026
sturgeon bay wi to point betsie mi south to port washington wi to
whitehall mi...
...gale warning in effect until 10 pm cdt this evening...
.rest of tonight...southwest gales to 35 kt late this evening,
becoming west 15 to 25 kt. waves 7 to 10 ft occasionally to 13
ft subsiding to 6 to 9 ft occasionally to 12 ft.
.wednesday...northwest winds 10 to 20 kt becoming west. waves
4 to 7 ft occasionally to 9 ft subsiding to 1 to 3 ft.
.wednesday night...west winds 15 to 25 kt becoming northwest.
waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
.thursday...northwest winds 15 to 25 kt. waves 4 to 6 ft
occasionally to 8 ft.
.thursday night...northwest winds 10 to 20 kt becoming west 10 to
15 kt. waves 2 to 4 ft.
.friday...west winds 10 to 20 kt becoming southwest. waves 1 to
3 ft building to 3 to 5 ft.
.friday night...south winds 10 to 20 kt increasing to 15 to
25 kt. waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft
occasionally to 9 ft.
.saturday...south winds to 30 kt increasing to gales to 35 kt.
waves 7 to 10 ft occasionally to 13 ft.
.sunday...south winds 15 to 25 kt. waves 4 to 7 ft occasionally
to 9 ft.
$$
(4/4)
Latest Great Lakes Marine Forecast by KMKX
Issued 10/6/2026 9:09 PM US/Central.
Valid through 10/7/2026 4:15 AM US/Central.
fzus63 kmkx 070209
glflm
expires:202610070915;;656596
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
909 pm cdt tue oct 6 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 gales over the northern half of lake michigan are
expected to drop below gale force by later this evening. the
gusty winds are a result of low pressure around 29.4 inches
tracking across northern ontario. a cold front extending southward
from this low will move across the lake overnight into wednesday
morning. this will turn winds briefly to the northwest wednesday
morning, before becoming west by the afternoon.
west to northwest winds will settle across the lake wednesday
night into thursday, as high pressure around 30.1 inches moves
into the northern plains. winds will once again become southerly
later friday into friday night, as the high departs the upper
great lakes and low pressure around 29.2 inches approaches from
the northern plains.
lmz080-671-673-675-777-779-872-874-876-878-070915-
lake michigan from michigan city in to st. joseph mi 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 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-
909 pm cdt tue oct 6 2026
port washington wi to whitehall mi south...
.rest of tonight...southwest winds to 30 kt diminishing to 15 to
25 kt. waves 6 to 9 ft occasionally to 12 ft.
.wednesday...west winds 10 to 20 kt diminishing to 10 to 15 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft.
.wednesday night...west winds 10 to 20 kt becoming northwest
15 to 25 kt. waves 2 to 4 ft building to 4 to 6 ft occasionally
to 8 ft.
.thursday...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 4 to 7 ft occasionally to 9 ft.
.thursday night...northwest winds 10 to 20 kt becoming west 10 to
15 kt. waves 3 to 5 ft.
.friday...west winds 10 to 20 kt becoming southwest. waves 1 to
3 ft building to 3 to 5 ft.
.friday night...south winds 10 to 20 kt increasing to 15 to
25 kt. waves 3 to 5 ft building to 4 to 7 ft occasionally to
9 ft.
.saturday...south winds to 30 kt. waves 6 to 9 ft occasionally to
12 ft.
.sunday...south winds 10 to 20 kt. waves 4 to 6 ft occasionally
to 8 ft.
$$
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