510
FZUS63 KMKX 250756
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
256 AM CDT Sun Oct 25 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...

Low pressure around 29.2 inches will move across Hudson Bay today,
while high pressure around 30.6 inches will move from Alberta to
the northern Great Lakes by Monday night. This will result in a
slow moving cold front from north to south across Lake Michigan
this afternoon through tonight. Thus modest southwest winds today
will become north to northeasterly with the frontal passage.
Breezy northeast winds will continue through Monday then southeasterly
for Tuesday. Modest to breezy southerly winds will then prevail
for the middle of the week.

LMZ261-362-364-366-563-565-567-868-251530-
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-
256 AM CDT Sun Oct 25 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Southwest winds 15 to 25 kt veering to northwest 10 to
20 kt. Chance of showers this afternoon. Waves 3 to 5 ft
subsiding to 2 to 4 ft.
.TONIGHT...North winds 10 to 15 kt increasing to 10 to 20 kt.
Slight chance of rain showers in the evening. Waves 2 to 4 ft.
.MONDAY...North winds 10 to 20 kt. Waves 4 to 6 ft occasionally
to 8 ft.
.MONDAY NIGHT...Northeast winds 10 to 20 kt becoming east. Waves
4 to 6 ft occasionally to 8 ft.
.TUESDAY...Southeast winds 10 to 20 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.TUESDAY NIGHT...Southeast winds 15 to 25 kt becoming south.
Waves 4 to 6 ft occasionally to 8 ft.
.WEDNESDAY...South winds to 30 kt. Waves 4 to 7 ft occasionally
to 9 ft.
.THURSDAY...West winds 10 to 20 kt. Chance of showers. Waves 2 to
4 ft subsiding to 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-251530-
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-
256 AM CDT Sun Oct 25 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...South winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 2 to 4 ft.
.TONIGHT...South winds 10 to 15 kt veering to north 10 to 20 kt.
Waves 2 to 4 ft building to 3 to 5 ft.
.MONDAY...Northeast winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 4 to 7 ft occasionally to 9 ft.
.MONDAY NIGHT...Northeast winds 15 to 25 kt becoming east 10 to
20 kt. Waves 4 to 7 ft occasionally to 9 ft.
.TUESDAY...Southeast winds 15 to 25 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.TUESDAY NIGHT...Southeast winds 10 to 20 kt becoming south.
Waves 4 to 6 ft occasionally to 8 ft.
.WEDNESDAY...South winds 15 to 25 kt increasing to 30 kt. Waves
4 to 7 ft occasionally to 9 ft.
.THURSDAY...Southwest winds 10 to 20 kt becoming west. Chance of
showers. Waves 3 to 5 ft.

$$

LMZ761-251530-
MAFOR 2510/
MICHIGAN NORTH 12530 11520 11720 13810 11820. A chance of showers
this afternoon. Waves 2 to 4 feet subsiding to 1 to 3 feet today.
Waves 1 to 3 feet tonight.

MICHIGAN SOUTH 14420 11410 11510 11620 11820. Waves 1 to 3 feet
building to 2 to 4 feet, then subsiding to 1 to 3 feet today.
Waves 1 to 3 feet building to 2 to 4 feet tonight.

$$


Gehring

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

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