016
FZUS63 KMKX 252050
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
250 PM CST Tue Nov 25 2025

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 and variable winds (predominantly southeasterly) will
linger as low pressure around 29.6 inches approaches pushes across
WI this afternoon. This low pressure is expected to cross the
Upper Peninsula of MI through Wednesday, deepening to around 29.3
inches. A cold front extending south of the low is expected to
cross Lake Michigan tonight, turning winds southwest and steadily
increasing toward daybreak on Wednesday. Strong west to northwest
winds develop over the lake Wednesday. Expecting storm force gust
for southern two-thirds to gale force gusts for the northern third
through the day Wednesday. Gale Warnings are in effect across the
lake Wednesday, along with a Storm Warning over the southern two
thirds of the open waters, where we expect the strongest winds and
highest waves especially on the east side of the Lake. Winds veer
due west by mid Wednesday, then northwest late Wednesday through
Thursday night. Winds are expected to decrease below storm force
by daybreak Thursday, but Gale Warnings do remain in effect
Thursday into Thursday night as gusty northwest winds continue.
Winds gradually subside into Friday as high pressure builds into
the region from the west.

LMZ261-362-364-563-260415-
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 Rock Island Passage to Sturgeon Bay WI-
250 PM CST Tue Nov 25 2025

STURGEON BAY WI TO POINT BETSIE MI NORTH...

...GALE WARNING IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE
THURSDAY NIGHT...

.TONIGHT...Southeast winds 10 to 15 kt increasing to 30 kt.
Chance of rain this evening, then rain overnight. Waves 1 to 3 ft
building to 4 to 6 ft occasionally to 8 ft.
.WEDNESDAY...South winds to 30 kt becoming southwest 15 to 25 kt
late in the morning, then becoming west gales to 40 kt early in
the afternoon becoming northwest gales to 45 kt late. Rain in the
morning, then rain and snow in the afternoon. Waves 6 to 9 ft
occasionally to 12 ft building to 10 to 14 ft occasionally to
18 ft.
.WEDNESDAY NIGHT...Northwest storm force winds to 50 kt
diminishing to gales to 45 kt. Snow. Waves 14 to 18 ft
occasionally to 23 ft.
.THURSDAY...Northwest gales to 45 kt diminishing to gales to
40 kt. Snow. Waves 12 to 16 ft occasionally to 21 ft subsiding to
8 to 11 ft occasionally to 14 ft.
.THURSDAY NIGHT...Northwest gales to 40 kt. Snow in the evening,
then chance of snow overnight. Waves 8 to 11 ft occasionally to
14 ft.
.FRIDAY...Northwest winds to 30 kt. Chance of snow. Waves 5 to
8 ft occasionally to 10 ft subsiding to 3 to 5 ft.
.FRIDAY NIGHT...Northwest winds 10 to 20 kt becoming west 5 to
10 kt. Waves 2 to 4 ft subsiding to 1 to 2 ft.
.SATURDAY...Southwest winds 10 to 20 kt becoming south. Chance of
snow. Waves 1 to 2 ft building to 2 to 4 ft.
.SUNDAY...North winds 15 to 25 kt becoming northwest. Chance of
snow. Waves 3 to 5 ft.

$$

LMZ366-565-567-868-260415-
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-
250 PM CST Tue Nov 25 2025

STURGEON BAY WI TO POINT BETSIE MI SOUTH TO SHEBOYGAN WI TO
PENTWATER MI...

...STORM WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...
...GALE WARNING IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY EVENING...

.TONIGHT...South winds 5 to 10 kt increasing to 10 to 20 kt late
this evening, then increasing to 30 kt after midnight becoming
southwest late. Chance of rain. Waves 1 ft or less building to
6 to 9 ft occasionally to 12 ft.
.WEDNESDAY...Southwest winds to 30 kt becoming west gales to
40 kt late in the morning, then becoming northwest storm force
winds to 50 kt in the afternoon. Rain in the morning, then rain
and snow in the afternoon. Waves 12 to 16 ft occasionally to
21 ft building to 14 to 18 ft occasionally to 23 ft.
.WEDNESDAY NIGHT...Northwest storm force winds to 55 kt
diminishing to gales to 45 kt. Snow in the evening, then chance
of snow overnight. Waves 18 to 23 ft occasionally to 30 ft
subsiding to 14 to 18 ft occasionally to 23 ft.
.THURSDAY...Northwest gales to 45 kt diminishing to gales to
40 kt. Chance of snow. Waves 14 to 18 ft occasionally to 23 ft.
.THURSDAY NIGHT...Northwest gales to 35 kt diminishing to 30 kt.
Chance of snow in the evening. Waves 10 to 14 ft occasionally to
18 ft.
.FRIDAY...Northwest winds to 30 kt diminishing to 10 to 20 kt in
the afternoon. Waves 7 to 10 ft occasionally to 13 ft subsiding
to 4 to 7 ft occasionally to 9 ft.
.FRIDAY NIGHT...Northwest winds 10 to 15 kt becoming west 5 to
10 kt. Chance of snow. Waves 2 to 4 ft subsiding to 1 to 2 ft.
.SATURDAY...South winds 10 to 20 kt becoming southeast. Snow
likely. Waves 2 to 4 ft building to 5 to 8 ft occasionally to
10 ft.
.SUNDAY...Northwest winds 10 to 20 kt increasing to 15 to 25 kt.
Chance of snow. Waves 4 to 6 ft occasionally to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-260415-
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-
250 PM CST Tue Nov 25 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...STORM WARNING IN EFFECT FROM WEDNESDAY MORNING THROUGH
WEDNESDAY EVENING...
...GALE WARNING IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH
THURSDAY EVENING...

.TONIGHT...Southwest winds 10 to 20 kt increasing to gales to
35 kt. Slight chance of rain. Waves 1 to 2 ft building to 10 to
14 ft occasionally to 18 ft.
.WEDNESDAY...Southwest gales to 45 kt becoming west late in the
morning, then increasing to storm force winds to 50 kt early in
the afternoon becoming northwest storm force winds to 55 kt late.
Rain likely in the morning, then snow and slight chance of rain
in the afternoon. Waves 12 to 16 ft occasionally to 21 ft
building to 20 to 25 ft occasionally to 33 ft.
.WEDNESDAY NIGHT...Northwest storm force winds to 55 kt
diminishing to gales to 45 kt. Chance of snow. Waves 25 to 30 ft
occasionally to 39 ft subsiding to 18 to 23 ft occasionally to
30 ft.
.THURSDAY...Northwest gales to 45 kt diminishing to gales to
40 kt. Chance of snow. Waves 15 to 20 ft occasionally to 26 ft
subsiding to 14 to 18 ft occasionally to 23 ft.
.THURSDAY NIGHT...Northwest gales to 40 kt diminishing to 30 kt
overnight. Chance of snow. Waves 14 to 18 ft occasionally to
23 ft.
.FRIDAY...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Chance of snow in the morning. Waves 8 to 12 ft occasionally to
16 ft subsiding to 6 to 9 ft occasionally to 12 ft.
.FRIDAY NIGHT...West winds 10 to 15 kt becoming southwest. Chance
of snow. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.SATURDAY...South winds 15 to 25 kt increasing to 30 kt. Snow.
Waves 4 to 7 ft occasionally to 9 ft building to 6 to 9 ft
occasionally to 12 ft.
.SUNDAY...Northwest winds 15 to 25 kt increasing to 30 kt. Chance
of rain and snow. Waves 6 to 9 ft occasionally to 12 ft.

$$

&&STORM

&&STORM

LMZ761-260415-
MAFOR 2523/
MICHIGAN NORTH...STORM WARNING IN EFFECT...12310 11330 12446
11546 11676 11777. Waves 2 feet or less building to 6 to 9 feet
tonight. Waves 8 to 11 feet building to 13 to 17 feet Wednesday.

MICHIGAN SOUTH...STORM WARNING IN EFFECT...11510 11420 11546
11550 11556 11666 12677. Waves 1 foot or less building to 9 to 12
feet tonight. Waves 11 to 15 feet building to 18 to 23 feet
Wednesday.

$$


Wagner

Experimental modernized open lake forecast is available online at
weather.gov/mkx/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes