National Weather Service Weather Forecast Office

• Home
• Site Map
• News
• Organization
• Search for: NWS All NOAA 

000
FZUS63 KMKX 071452
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
852 AM CST Thu Dec 7 2023

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...

Southwest winds are gradually declining over Lake Michigan this
morning. South to southwest winds with gusts up to 25 kts
gradually rebuild tonight into Friday as low pressure of 29.3
inches moves eastward into southern Ontario. Another area of low
pressure will develop over Illinois Friday night and move
northeastward across Lake Michigan on Saturday. Southwest winds
will shift to the west Saturday afternoon and to the northwest on
Sunday as the low exits to the northeast. Will need to keep an eye
on gales for the southern half of Lake Michigan on Saturday.

LMZ261-362-364-366-563-565-567-868-072245-
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-
852 AM CST Thu Dec 7 2023

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...West winds 5 to 10 kt backing to south 10 to
15 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.TONIGHT...Southeast winds 10 to 15 kt becoming south 15 to
25 kt. Waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft.
.FRIDAY...South winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 4 to 7 ft occasionally to 9 ft.
.FRIDAY NIGHT...Southwest winds 10 to 20 kt becoming south to
30 kt overnight. Chance of rain overnight. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft.
.SATURDAY...South gales to 35 kt becoming southwest to 30 kt.
Rain likely in the morning, then chance of rain in the afternoon.
Waves 6 to 9 ft occasionally to 12 ft.
.SATURDAY NIGHT...West winds to 30 kt becoming northwest 15 to
25 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.SUNDAY...Northwest winds 15 to 25 kt. Waves 3 to 5 ft.
.MONDAY...West winds 15 to 25 kt. Waves 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-072245-
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-
852 AM CST Thu Dec 7 2023

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Southwest winds 10 to 20 kt becoming south.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft.
.TONIGHT...South winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
.FRIDAY...Southwest winds to 30 kt becoming south 10 to 20 kt.
Waves 5 to 8 ft occasionally to 10 ft.
.FRIDAY NIGHT...South winds 10 to 20 kt increasing to 30 kt
overnight. Rain likely overnight. Waves 4 to 6 ft occasionally to
8 ft.
.SATURDAY...Southwest gales to 35 kt becoming west to 30 kt. Rain
likely in the morning. Waves 6 to 9 ft occasionally to 12 ft.
.SATURDAY NIGHT...West winds to 30 kt becoming northwest 15 to
25 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
7 ft occasionally to 9 ft.
.SUNDAY...Northwest winds 15 to 25 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.MONDAY...West winds 10 to 20 kt becoming southwest 15 to 25 kt.
Waves 3 to 5 ft.

$$

LMZ761-072245-
MAFOR 0717/
MICHIGAN NORTH 11500 13410 12420 12430. Waves 2 to 4 ft this
afternoon. Waves 2 to 4 ft building to 4 to 6 ft occasionally to
8 ft tonight. Waves 4 to 7 ft occasionally to 9 ft Friday
morning.

MICHIGAN SOUTH 11520 12410 11420 13430 11530. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft this afternoon. Waves
2 to 4 ft building to 4 to 7 ft occasionally to 9 ft tonight.
Waves 5 to 8 ft occasionally to 10 ft Friday morning.

$$


Sheppard

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

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