411
FZUS63 KMKX 100206
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
906 PM CDT Wed Apr 9 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...

Southeast winds will continue into the early morning hours as low
pressure around 29.8 inches develops across eastern Iowa and
pivots southeastward into northern Indiana overnight.

As low pressure around 29.9 inches pushes into the Ohio Valley
overnight, winds will become northeasterly by daybreak, then
northerly by tomorrow night. Northerly winds linger through
Friday, becoming light and variable into Saturday as high pressure
moves overhead.

LMZ261-362-364-366-563-565-567-868-100915-
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-
906 PM CDT Wed Apr 9 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Southeast winds 10 to 20 kt becoming east
10 to 15 kt. Chance of rain showers. Waves 3 to 5 ft subsiding to
1 to 3 ft.
.THURSDAY...East winds 10 to 15 kt becoming northeast 10 to
20 kt. Waves 1 to 3 ft.
.THURSDAY NIGHT...Northeast winds 10 to 20 kt diminishing to 5 to
10 kt. Waves 1 to 3 ft.
.FRIDAY...North winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.FRIDAY NIGHT...North winds 10 to 15 kt diminishing to 5 to
10 kt. Waves 1 to 2 ft subsiding to 1 ft or less.
.SATURDAY...Southeast winds 5 to 10 kt becoming south 10 to
15 kt. Waves nearly calm building to 1 to 2 ft.
.SATURDAY NIGHT...South winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 to 3 ft.
.SUNDAY...South winds 15 to 25 kt. Waves 3 to 5 ft building to
4 to 7 ft occasionally to 9 ft.
.MONDAY...Southwest winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 4 to 6 ft occasionally to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-100915-
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-
906 PM CDT Wed Apr 9 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Southeast winds 15 to 25 kt becoming east
10 to 20 kt after midnight, then diminishing to 10 to 15 kt late.
Patchy fog. Rain showers likely late this evening, then chance of
rain showers overnight. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.THURSDAY...Northeast winds 10 to 15 kt becoming north 10 to
20 kt. Patchy fog in the morning. Slight chance of rain showers
in the morning. Waves 1 to 3 ft.
.THURSDAY NIGHT...North winds 10 to 20 kt becoming northeast
10 to 15 kt. Waves 1 to 3 ft.
.FRIDAY...North winds 10 to 20 kt. Waves 1 to 3 ft building to
2 to 4 ft.
.FRIDAY NIGHT...North winds 10 to 20 kt diminishing to 5 to 10 kt
overnight. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.SATURDAY...Northeast winds 5 to 10 kt veering to southwest 10 to
15 kt. Waves 1 to 2 ft.
.SATURDAY NIGHT...Southeast winds 10 to 15 kt becoming south.
Waves 1 to 3 ft.
.SUNDAY...South winds 15 to 25 kt. Waves 3 to 5 ft building to
4 to 7 ft occasionally to 9 ft.
.MONDAY...Southwest winds 10 to 20 kt becoming west 15 to 25 kt.
Waves 4 to 6 ft occasionally to 8 ft.

$$

LMZ761-100915-
MAFOR 1004/
MICHIGAN NORTH 14210 12110 11120 11110. A chance of rain showers
overnight. Waves 2 to 4 feet subsiding to 1 to 3 feet overnight.
Waves 2 feet or less Thursday and Thursday evening.

MICHIGAN SOUTH 11220 11210 13110 12810 11110. A chance of rain
showers overnight. Waves 2 to 4 feet subsiding to 1 to 3 feet
overnight. Waves 2 feet or less Thursday and Thursday evening.

$$


CMiller

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

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