583
FZUS63 KMKX 181337
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
837 AM CDT Wed Sep 18 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 around 30.2 inches over New England and low
pressure around 29.3 inches over the northern High Plains will
keep winds light through today. High pressure will gradually
weaken and drift farther east on Thursday, with the low over the
Plains strengthening to 29.2 inches. This will produce south-
southeast winds Thursday into Friday. In addition, a weak front
will push southeastward across the open waters Thursday night into
Friday, bringing showers and isolated thunderstorms. Drier
conditions are expected Saturday before another area of low
pressure around 29.6 inches begins to push into the Great Lakes
region early next week, with winds remaining generally easterly
ahead of this system. As the low pressure approaches, additional
showers and thunderstorm chances develop. A return to more
westerly winds are expected behind the system.

LMZ261-362-364-366-563-565-567-868-182115-
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-
837 AM CDT Wed Sep 18 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Southeast winds 5 to 10 kt veering to west.
Patchy dense fog through mid morning. Waves 1 to 2 ft.
.TONIGHT...East winds 5 to 10 kt veering to southeast. Waves 1 ft
or less.
.THURSDAY...South winds 5 to 10 kt increasing to 10 to 15 kt.
Waves 1 to 2 ft.
.THURSDAY NIGHT...Southeast winds 10 to 15 kt becoming south.
Waves 1 to 3 ft.
.FRIDAY...South winds 10 to 20 kt. Chance of showers. Waves 2 to
4 ft.
.FRIDAY NIGHT...Southeast winds 10 to 15 kt becoming south 5 to
10 kt. Waves 1 to 3 ft.
.SATURDAY...East winds 5 to 10 kt becoming northeast 10 to 15 kt.
Waves 1 to 2 ft.
.SUNDAY...East winds 10 to 15 kt increasing to 10 to 20 kt. Waves
1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-182115-
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-
837 AM CDT Wed Sep 18 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Southeast winds 5 to 10 kt becoming east. Waves
1 to 2 ft.
.TONIGHT...Northeast winds 5 to 10 kt veering to southeast. Waves
1 ft or less.
.THURSDAY...South winds 5 to 10 kt becoming southeast. Waves 1 to
2 ft.
.THURSDAY NIGHT...Southeast winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 to 3 ft.
.FRIDAY...South winds 10 to 20 kt. Chance of showers. Waves 2 to
4 ft.
.FRIDAY NIGHT...Southeast winds 5 to 10 kt becoming east. Waves
1 to 3 ft.
.SATURDAY...Northeast winds 5 to 10 kt becoming north. Waves 1 to
2 ft.
.SUNDAY...Southeast winds 10 to 15 kt becoming east 10 to 20 kt.
Chance of showers. Waves 1 to 3 ft.

$$

LMZ761-182115-
MAFOR 1816/
MICHIGAN NORTH 11400 11500 11100 11200 12300 12400. Waves 1 foot
or less.

MICHIGAN SOUTH 12300 12100 11200 12300 11400. Waves 1 foot or
less.

$$


Boxell

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

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