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Latest Great Lakes Marine Forecast by KMKX
Issued 1/4/2026 9:02 AM US/Central.
Valid through 1/4/2026 4:15 PM US/Central.
fzus63 kmkx 041502
glflm
expires:202601042215;;777014
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
902 am cst sun jan 4 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...
30.2 inch high pressure is moving across lake michigan this
morning, resulting in light westerly winds. currently over the
northern great plains, 29.6 inch low pressure will move into the
northern mississippi river valley this evening, resulting in
increasing southerly winds across the waters. gusts between 25-30
knots will be possible through daybreak monday. winds will veer
southwesterly and eventually westerly monday morning as the
aforementioned area of low pressure crosses the waters, gradually
weakening in the process. rain-snow mix and freezing drizzle are
forecast ahead of the approaching low tonight. winds will become
light and variable monday afternoon as 29.9 inch high pressure
moves across lake michigan.
southerly winds will become established monday night ahead of a new
area of 29.6 inch low pressure forming in the northern great
plains. the low will approach and ultimately cross lake michigan
tuesday morning, resulting in a west-northwest wind shift by the
afternoon hours. gales are not anticipated during the low's
passage. additional rain and rain-snow mix are forecast tuesday in
affiliation with the low. west to southwest winds will prevail
through wednesday afternoon, turning southerly wednesday night
into thursday. a cold front will cross the waters thursday night,
bringing north-northeast winds by friday morning. rain and snow
will accompany the passing cold front thursday night through
friday.
lmz261-362-364-366-563-565-567-868-042215-
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-
902 am cst sun jan 4 2026
sheboygan wi to pentwater mi north...
.rest of today...west winds 10 to 15 kt backing to southwest
10 to 20 kt. chance of light freezing drizzle, light sleet and
slight chance of light freezing rain this afternoon. waves 1 to
3 ft.
.tonight...south winds 15 to 25 kt becoming southwest. snow and
freezing rain in the evening, then light freezing rain likely
with possible rain, drizzle, freezing drizzle and snow overnight.
patchy fog overnight. waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft.
.monday...west winds 10 to 20 kt becoming southwest 5 to 10 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft.
.monday night...south winds 5 to 10 kt. waves 1 to 3 ft.
.tuesday...southeast winds 10 to 15 kt becoming south. chance of
rain. waves 1 to 2 ft.
.tuesday night...west winds 10 to 15 kt. chance of rain. waves
1 to 3 ft.
.wednesday...west winds 10 to 15 kt becoming southwest 10 to
20 kt. waves 1 to 3 ft.
.thursday...south winds 10 to 20 kt becoming southwest. waves
2 to 4 ft.
$$
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Latest Great Lakes Marine Forecast by KMKX
Issued 1/4/2026 9:02 AM US/Central.
Valid through 1/4/2026 4:15 PM US/Central.
fzus63 kmkx 041502
glflm
expires:202601042215;;777015
open lake forecast for lake michigan
national weather service milwaukee/sullivan wi
902 am cst sun jan 4 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...
30.2 inch high pressure is moving across lake michigan this
morning, resulting in light westerly winds. currently over the
northern great plains, 29.6 inch low pressure will move into the
northern mississippi river valley this evening, resulting in
increasing southerly winds across the waters. gusts between 25-30
knots will be possible through daybreak monday. winds will veer
southwesterly and eventually westerly monday morning as the
aforementioned area of low pressure crosses the waters, gradually
weakening in the process. rain-snow mix and freezing drizzle are
forecast ahead of the approaching low tonight. winds will become
light and variable monday afternoon as 29.9 inch high pressure
moves across lake michigan.
southerly winds will become established monday night ahead of a new
area of 29.6 inch low pressure forming in the northern great
plains. the low will approach and ultimately cross lake michigan
tuesday morning, resulting in a west-northwest wind shift by the
afternoon hours. gales are not anticipated during the low's
passage. additional rain and rain-snow mix are forecast tuesday in
affiliation with the low. west to southwest winds will prevail
through wednesday afternoon, turning southerly wednesday night
into thursday. a cold front will cross the waters thursday night,
bringing north-northeast winds by friday morning. rain and snow
will accompany the passing cold front thursday night through
friday.
lmz080-669-671-673-675-777-779-870-872-874-876-878-042215-
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-
902 am cst sun jan 4 2026
sheboygan wi to pentwater mi south...
.rest of today...southwest winds 5 to 10 kt increasing to 10 to
15 kt early this afternoon, then becoming south 10 to 20 kt late.
chance of light freezing drizzle and slight chance of light
freezing rain this afternoon. waves 1 to 3 ft.
.tonight...south winds 15 to 25 kt becoming southwest to 30 kt.
rain likely, chance of drizzle, light freezing drizzle and light
freezing rain in the evening, then slight chance of drizzle and
light freezing drizzle overnight. waves 3 to 5 ft building to
5 to 8 ft occasionally to 10 ft.
.monday...southwest winds 10 to 20 kt diminishing to 5 to 10 kt.
waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft.
.monday night...south winds 5 to 10 kt increasing to 10 to 15 kt.
waves 1 to 3 ft.
.tuesday...south winds 10 to 15 kt becoming southwest. chance of
rain. waves 1 to 3 ft.
.tuesday night...west winds 10 to 15 kt. waves 2 to 4 ft.
.wednesday...west winds 10 to 15 kt becoming southwest. waves
2 to 4 ft.
.thursday...south winds 10 to 20 kt becoming west. waves 2 to
4 ft.
$$
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