185
FZUS63 KMKX 251929
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
229 PM 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...

High pressure ranging in central pressure from 30.0 to 30.1 inches
will linger over the Upper Great Lakes region into Friday morning.
Light and variable winds will persist during this time, as the
week pressure gradient over the lake won`t force a certain wind
direction for any appreciable amount of time.

Friday, the remnants of Hurricane Helene are projected to move
into the Ohio River Valley as a post tropical cyclone with a
central pressure of 29.4 inches. The stronger pressure gradient
from the low will move over the southern end of Lake Michigan,
promoting gusty northeasterly winds during the day on Friday and
overnight into early Saturday morning. Helene is gradually
expected to fill and die out over the weekend, promoting a gradual
decrease in northeast to northerly wind Saturday into Sunday.

LMZ261-362-364-366-563-565-567-868-260315-
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-
229 PM CDT Wed Sep 25 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Southwest winds 10 to 15 kt becoming northwest 5 to
10 kt. Waves 1 to 2 ft.
.THURSDAY...Northwest winds 5 to 10 kt backing to south. Waves
1 to 2 ft.
.THURSDAY NIGHT...South winds 5 to 10 kt becoming southeast.
Patchy dense fog overnight. Waves 1 ft or less.
.FRIDAY...East winds 10 to 15 kt becoming northeast 10 to 20 kt.
Patchy dense fog in the morning. 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.
.SATURDAY NIGHT...Northeast winds 10 to 20 kt diminishing to
10 to 15 kt. Waves 1 to 3 ft.
.SUNDAY...Northeast winds 10 to 20 kt. Waves 1 to 3 ft.
.MONDAY...Southeast winds 10 to 15 kt becoming south 10 to 20 kt.
Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-260315-
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-
229 PM CDT Wed Sep 25 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...West winds 5 to 10 kt becoming northwest. Waves 1 to
3 ft subsiding to 1 to 2 ft.
.THURSDAY...North winds 5 to 10 kt becoming northeast 10 to
15 kt. Waves 1 ft or less.
.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. Waves 4 to 6 ft
occasionally to 8 ft.
.SATURDAY NIGHT...Northeast winds 10 to 20 kt diminishing to
10 to 15 kt. Waves 3 to 5 ft.
.SUNDAY...Northeast winds 10 to 20 kt becoming north. Waves 2 to
4 ft.
.MONDAY...East winds 10 to 15 kt. Waves 1 to 3 ft.

$$

LMZ761-260315-
MAFOR 2522/
MICHIGAN NORTH 13510 11600 11700 13400. Waves 2 feet or less.

MICHIGAN SOUTH 11700 12600 11700 11800 13100. Waves 2 feet or
less.

$$


CMiller

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

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