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Latest Great Lakes Marine Forecast by KMKX
Issued 2/17/2026 9:33 PM US/Central.
Valid through 2/18/2026 4:15 AM US/Central.
fzus63 kmkx 180333
glflm
expires:202602181015;;819024
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
933 pm cst tue feb 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...
east to southeast winds will increase through tonight as a
strong, compact low pressure of 29.1 inches approaches from the
dakotas. high-end, easterly gales are expected from midnight into
wednesday afternoon over the northern third of the lake, where a
gale warning remains in effect but has been extended to the entire
north half of the lake. the warmer airmass over the chilly lake
waters should limit the mixing down of higher gusts any further
south. high winds may not reach across the entire south half but
the chances increased a tad with the latest model information.
winds will ease later wednesday into thursday and become southerly
as that low occludes and weakens to 29.5 inches over northern
minnesota. winds will increase thursday night into friday night
as another strong low pressure system around 29.2 inches tracks
from iowa into central wisconsin. that low will cross northern or
central lake michigan friday morning and gradually weaken through
saturday. gusty northerly winds are expected sunday into monday.
lmz261-362-364-366-563-565-567-868-181015-
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-
933 pm cst tue feb 17 2026
sheboygan wi to pentwater mi north...
...gale warning in effect through wednesday afternoon...
.rest of tonight...east gales to 35 kt increasing to gales to
45 kt. chance of rain and light freezing rain late this evening,
then rain, light freezing rain and snow likely overnight. waves
6 to 9 ft occasionally to 12 ft building to 8 to 12 ft
occasionally to 16 ft.
.wednesday...southeast gales to 45 kt becoming south gales to
40 kt. rain, snow, slight chance of freezing rain and sleet in
the morning, then chance of rain and light freezing rain in the
afternoon. waves 10 to 14 ft occasionally to 18 ft subsiding to
6 to 9 ft occasionally to 12 ft.
.wednesday night...southeast gales to 40 kt diminishing to 30 kt.
waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft
occasionally to 8 ft.
.thursday...southeast winds to 30 kt becoming east. waves 3 to
5 ft.
.thursday night...east winds to 30 kt. chance of rain in the
evening, then rain likely with a chance of light freezing rain
overnight. waves 4 to 6 ft occasionally to 8 ft.
.friday...southeast winds to 30 kt backing to northwest 15 to
25 kt. rain and snow likely in the morning, then chance of snow
and rain in the afternoon. waves 5 to 8 ft occasionally to 10 ft.
.friday night...northwest winds 15 to 25 kt. waves 5 to 8 ft
occasionally to 10 ft.
.saturday...northwest winds 10 to 20 kt. waves 4 to 7 ft
occasionally to 9 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.sunday...north winds to 30 kt. waves 8 to 11 ft occasionally to
14 ft building to 8 to 12 ft occasionally to 16 ft.
$$
(2/2)
Latest Great Lakes Marine Forecast by KMKX
Issued 2/17/2026 9:33 PM US/Central.
Valid through 2/18/2026 4:15 AM US/Central.
fzus63 kmkx 180333
glflm
expires:202602181015;;819025
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
933 pm cst tue feb 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...
east to southeast winds will increase through tonight as a
strong, compact low pressure of 29.1 inches approaches from the
dakotas. high-end, easterly gales are expected from midnight into
wednesday afternoon over the northern third of the lake, where a
gale warning remains in effect but has been extended to the entire
north half of the lake. the warmer airmass over the chilly lake
waters should limit the mixing down of higher gusts any further
south. high winds may not reach across the entire south half but
the chances increased a tad with the latest model information.
winds will ease later wednesday into thursday and become southerly
as that low occludes and weakens to 29.5 inches over northern
minnesota. winds will increase thursday night into friday night
as another strong low pressure system around 29.2 inches tracks
from iowa into central wisconsin. that low will cross northern or
central lake michigan friday morning and gradually weaken through
saturday. gusty northerly winds are expected sunday into monday.
lmz080-669-671-673-675-777-779-870-872-874-876-878-181015-
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-
933 pm cst tue feb 17 2026
sheboygan wi to pentwater mi south...
.rest of tonight...southeast winds to 30 kt increasing to gales
to 35 kt. chance of rain late this evening, then rain overnight.
waves 4 to 7 ft occasionally to 9 ft building to 7 to 10 ft
occasionally to 13 ft.
.wednesday...south winds to 30 kt becoming southwest. chance of
rain in the morning. waves 7 to 10 ft occasionally to 13 ft
subsiding to 4 to 6 ft occasionally to 8 ft.
.wednesday night...southwest winds 10 to 20 kt diminishing to
10 to 15 kt late in the evening, then becoming south 5 to 10 kt
after midnight becoming southeast 10 to 15 kt late. waves 3 to
5 ft subsiding to 1 to 3 ft.
.thursday...southeast winds 10 to 15 kt becoming east 10 to
20 kt. chance of rain in the afternoon. waves 2 to 4 ft.
.thursday night...east winds 10 to 20 kt becoming south 15 to
25 kt. rain in the evening, then rain likely overnight. waves
3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.friday...southwest winds to 30 kt becoming west. chance of rain
and snow in the morning. waves 7 to 10 ft occasionally to 13 ft.
.friday night...west winds to 30 kt diminishing to 15 to 25 kt.
waves 7 to 10 ft occasionally to 13 ft.
.saturday...northwest winds 15 to 25 kt diminishing to 10 to
20 kt. waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.sunday...northwest winds to 30 kt. chance of snow. waves 12 to
16 ft occasionally to 21 ft.
$$
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