022
FZUS63 KMKX 240205
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
905 PM CDT Wed Jul 23 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...

A weak wave of low pressure will move from northern Lake Superior
to western Quebec by Thursday morning with its slow moving cold
front moving south across Lake Michigan Thursday into Thursday
evening. Thus light to modest southerly winds will shift north to
northwesterly with the cold frontal passage. Scattered to numerous
showers and storms are forecast through Thursday into Thursday
evening.

Light northerly winds will then prevail on Friday as weak high
pressure shifts east across the northern Great Lakes. The winds
will be easterly Friday night then southerly through Saturday as
the high moves away. More showers and storms may occur especially
on Saturday.

LMZ261-362-364-366-563-565-567-868-240930-
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-
905 PM CDT Wed Jul 23 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...South winds 15 to 20 kt becoming southwest 10
to 20 kt. Patchy fog. Chance of showers and thunderstorms through
early evening, then slight chance of showers and thunderstorms
overnight. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft.
.THURSDAY...Southwest winds 10 to 20 kt becoming west. Patchy
dense fog in the morning. Slight chance of showers and
thunderstorms in the morning, then chance of showers and
thunderstorms in the afternoon. Waves 3 to 5 ft.
.THURSDAY NIGHT...Northwest winds 10 to 15 kt becoming north 5 to
10 kt. Chance of showers in the evening. Waves 2 to 4 ft
subsiding to 1 to 2 ft.
.FRIDAY...North winds 5 to 10 kt increasing to 10 to 15 kt. Waves
1 to 2 ft.
.FRIDAY NIGHT...Northeast winds 10 to 15 kt becoming southeast
5 to 10 kt. Waves 1 to 2 ft.
.SATURDAY...South winds 10 to 15 kt. Chance of showers. Waves
1 to 2 ft.
.SATURDAY NIGHT...South winds 10 to 15 kt becoming southwest 5 to
10 kt. Waves 1 to 2 ft.
.SUNDAY...Southwest winds 10 to 15 kt. Waves 1 ft or less.
.MONDAY...Southwest winds 10 to 20 kt. Chance of showers and
thunderstorms. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-240930-
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-
905 PM CDT Wed Jul 23 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...South winds 15 to 20 kt diminishing to 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5
ft.
.THURSDAY...Southwest winds 10 to 20 kt. Slight chance of showers
and thunderstorms in the morning, then chance of showers and
thunderstorms in the afternoon. Waves 3 to 5 ft.
.THURSDAY NIGHT...West winds 10 to 20 kt becoming northwest 10 to
15 kt late in the evening, then diminishing to 5 to 10 kt after
midnight becoming north late. Chance of showers and
thunderstorms. Waves 2 to 4 ft subsiding to 1 to 2 ft.
.FRIDAY...North winds 5 to 10 kt increasing to 10 to 15 kt.
Chance of showers. Waves 1 to 2 ft.
.FRIDAY NIGHT...Northeast winds 10 to 15 kt veering to southeast
5 to 10 kt. Chance of showers and thunderstorms. Waves 1 to 2 ft.
.SATURDAY...South winds 10 to 15 kt. Chance of showers in the
morning, then chance of showers and thunderstorms in the
afternoon. Waves 1 to 2 ft.
.SATURDAY NIGHT...Southwest winds 10 to 15 kt becoming west 5 to
10 kt. Waves 1 to 2 ft.
.SUNDAY...West winds 5 to 10 kt backing to south. Waves 1 to
2 ft.
.MONDAY...Southwest winds 10 to 20 kt. Waves 1 to 3 ft.

$$

LMZ761-240930-
MAFOR 2404/
MICHIGAN NORTH 11536 14520 11520 11710 11810. A chance of
thunderstorms late this evening and Thursday afternoon. Waves 3
to 5 feet subsiding to 2 to 4 feet overnight. Waves 2 to 4 feet
Thursday. Waves 1 to 3 feet Thursday evening.

MICHIGAN SOUTH 11430 11420 14520 11620 11710. A chance of showers
and thunderstorms Thursday afternoon and Thursday evening. Waves
2 to 4 feet overnight and Thursday. Waves 1 to 3 feet Thursday
evening.

$$


Gehring

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

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