863
FZUS63 KMKX 251357
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
857 AM CDT Wed Sep 25 2024

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 29.7 inches will track into Lake Huron and
eastern Ontario through the day. Expect lighter northwest winds
around 10-15 knots across Lake Michigan today as the pressure
gradient relaxes with an incoming surface high pressure around
30.0 inches building in from the west. Influence from high
pressure will continue Thursday as it moves overhead. Then winds
are expected to turn easterly and increase, especially across
southern Lake Michigan, for Friday into the weekend as the
remnants of well-weakened Hurricane Helene work their way
northward. We will then see this low meander back southeast
heading into the weekend with somewhat light winds and influence
from another surface high pressure creep back southward.

LMZ261-362-364-366-563-565-567-868-252115-
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-
857 AM CDT Wed Sep 25 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Northwest winds 10 to 20 kt becoming west 10 to
15 kt. Waves 1 to 3 ft.
.TONIGHT...Southwest winds 10 to 15 kt veering to northwest 5 to
10 kt. Waves 1 to 2 ft.
.THURSDAY...North winds 5 to 10 kt becoming northeast 10 to
15 kt. Patchy dense fog in the morning. Waves 1 ft or less.
.THURSDAY NIGHT...East winds 5 to 10 kt becoming southeast. Waves
1 ft or less.
.FRIDAY...East winds 10 to 15 kt becoming northeast 10 to 20 kt.
Waves 1 to 2 ft.
.FRIDAY NIGHT...East winds 10 to 20 kt. Waves 1 to 3 ft.
.SATURDAY...Northeast winds 10 to 20 kt. Waves 1 to 3 ft.
.SUNDAY...Northeast winds 10 to 20 kt. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-252115-
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-
857 AM CDT Wed Sep 25 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Northwest winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 2 to 4 ft.
.TONIGHT...Northwest winds 10 to 15 kt diminishing to 5 to 10 kt.
Waves 1 to 3 ft subsiding to 1 to 2 ft.
.THURSDAY...North winds 5 to 10 kt increasing to 10 to 15 kt.
Waves 1 to 2 ft.
.THURSDAY NIGHT...Northeast winds 10 to 15 kt becoming east 10 to
20 kt. Waves 1 to 3 ft.
.FRIDAY...Northeast winds 10 to 20 kt increasing to 30 kt in the
afternoon. Waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft.
.FRIDAY NIGHT...Northeast winds to 30 kt diminishing to 15 to
25 kt. Waves 4 to 7 ft occasionally to 9 ft.
.SATURDAY...Northeast winds 10 to 20 kt. Chance of showers. Waves
4 to 6 ft occasionally to 8 ft.
.SUNDAY...Northeast winds 10 to 20 kt becoming north. Waves 2 to
4 ft.

$$

LMZ761-252115-
MAFOR 2516/
MICHIGAN NORTH 11710 11610 12510 11600 11700 11800 19804 11100.
Waves 1 to 3 feet this afternoon. Waves 2 feet or less tonight
and Thursday morning.

MICHIGAN SOUTH 13710 13700 11800 11110. Waves 2 to 4 feet
subsiding to 1 to 3 feet this afternoon. Waves 1 to 3 feet
subsiding to 1 foot or less tonight. Waves 1 foot or less
Thursday morning.

$$


CMiller

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

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