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Latest Great Lakes Marine Forecast by KMKX
Issued 2/19/2026 8:38 AM US/Central.
Valid through 2/19/2026 4:15 PM US/Central.
fzus63 kmkx 191438
glflm
expires:202602192215;;903555
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
838 am cst thu feb 19 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...
light southerly winds will gradually transition to east to
northeast through the day today, while slowly increasing this
afternoon as well. winds will increase tonight into friday night
as a strong low pressure system around 29.2 inches tracks from
west-central illinois into southeast wisconsin. that low will
cross central lake michigan friday morning and gradually weaken
through saturday as it pulls away to the east. gale force gusts
look likely across the southern half of the lake friday morning
into friday afternoon as the low moves through. breezy northwest
winds are expected saturday, with stronger winds again likely
sunday into monday.
lmz261-362-364-366-563-565-567-868-192215-
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-
838 am cst thu feb 19 2026
sheboygan wi to pentwater mi north...
.rest of today...south winds 15 to 25 kt backing to northeast
10 to 20 kt. waves 2 to 4 ft subsiding to 1 to 2 ft.
.tonight...northeast winds 15 to 25 kt becoming east to 30 kt.
chance of rain in the evening, then rain with freezing rain
likely overnight. waves 3 to 5 ft building to 4 to 6 ft
occasionally to 8 ft.
.friday...east gales to 35 kt backing to north to 30 kt. rain,
snow and freezing rain in the morning, then chance of rain, snow
and light freezing rain likely in the afternoon. waves 5 to 8 ft
occasionally to 10 ft.
.friday night...north winds 15 to 25 kt diminishing to 10 to
20 kt. chance of snow in the evening. waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft.
.saturday...north winds 10 to 20 kt diminishing to 10 to 15 kt.
chance of snow in the afternoon. waves 3 to 5 ft subsiding to
2 to 4 ft.
.saturday night...north winds 10 to 20 kt increasing to 15 to
25 kt. chance of snow. waves 2 to 4 ft building to 4 to 6 ft
occasionally to 8 ft.
.sunday...north winds 15 to 25 kt. waves 6 to 9 ft occasionally
to 12 ft.
.monday...north winds to 30 kt diminishing to 15 to 25 kt. waves
8 to 12 ft occasionally to 16 ft subsiding to 8 to 11 ft
occasionally to 14 ft.
$$
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Latest Great Lakes Marine Forecast by KMKX
Issued 2/19/2026 8:38 AM US/Central.
Valid through 2/19/2026 4:15 PM US/Central.
fzus63 kmkx 191438
glflm
expires:202602192215;;903556
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
838 am cst thu feb 19 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...
light southerly winds will gradually transition to east to
northeast through the day today, while slowly increasing this
afternoon as well. winds will increase tonight into friday night
as a strong low pressure system around 29.2 inches tracks from
west-central illinois into southeast wisconsin. that low will
cross central lake michigan friday morning and gradually weaken
through saturday as it pulls away to the east. gale force gusts
look likely across the southern half of the lake friday morning
into friday afternoon as the low moves through. breezy northwest
winds are expected saturday, with stronger winds again likely
sunday into monday.
lmz080-669-671-673-675-777-779-870-872-874-876-878-192215-
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-
838 am cst thu feb 19 2026
sheboygan wi to pentwater mi south...
...gale watch in effect from friday morning through friday
afternoon...
.rest of today...southeast winds 5 to 10 kt becoming northeast
10 to 15 kt. chance of rain showers this afternoon. waves 1 to
3 ft.
.tonight...northeast winds 10 to 20 kt becoming east late in the
evening, then increasing to 15 to 25 kt after midnight becoming
south to 30 kt late. rain and slight chance of thunderstorms in
the evening, then chance of rain and slight chance of
thunderstorms overnight. waves 3 to 5 ft.
.friday...west gales to 35 kt. rain and snow likely in the
morning. waves 6 to 9 ft occasionally to 12 ft building to 10 to
14 ft occasionally to 18 ft.
.friday night...west winds to 30 kt diminishing to 15 to 25 kt.
waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft
occasionally to 12 ft.
.saturday...northwest winds 10 to 20 kt. waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft.
.saturday night...northwest winds 10 to 20 kt increasing to 15 to
25 kt. chance of snow. waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft.
.sunday...northwest winds to 30 kt. chance of snow. waves 6 to
9 ft occasionally to 12 ft building to 8 to 11 ft occasionally to
14 ft.
.monday...north winds to 30 kt. waves 12 to 16 ft occasionally to
21 ft.
$$
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