406
FZUS63 KMKX 181351
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
851 AM CDT Sun Aug 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...

Low pressure of 29.6 inches will continue to push eastward through
the eastern Great Lakes through tonight, entering New England
Monday morning. Clouds and a few showers will linger over the
central and southern portions of Lake Michigan today as this low
exits. Northerly winds will gust near 30 kt in the central and
southern thirds of the lake today, increasing wave heights through
tonight. Winds will gradually weaken Monday and Monday night as
high pressure builds into the Great Lakes from the northern
Plains. Precipitation is not expected Monday through late this
week.

LMZ261-362-364-366-563-565-567-868-182130-
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-
851 AM CDT Sun Aug 18 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...North winds 15 to 25 kt increasing to 30 kt.
Slight chance of showers through mid morning. Waves 4 to 6 ft
occasionally to 8 ft building to 4 to 7 ft occasionally to 9 ft.
.TONIGHT...North winds to 30 kt diminishing to 15 to 25 kt. Waves
4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft.
.MONDAY...North winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 3 to 5 ft.
.MONDAY NIGHT...North winds 15 to 25 kt becoming northeast 10 to
20 kt. Waves 2 to 4 ft.
.TUESDAY...Northeast winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.TUESDAY NIGHT...Northeast winds 10 to 15 kt veering to southeast
5 to 10 kt. Waves 1 to 2 ft.
.WEDNESDAY...South winds 5 to 10 kt becoming southwest 10 to
15 kt. Waves 1 ft or less.
.THURSDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-182130-
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-
851 AM CDT Sun Aug 18 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...North winds 15 to 25 kt increasing to 30 kt.
Chance of showers through mid morning, then slight chance of
showers this afternoon. Waves 4 to 7 ft occasionally to 9 ft
building to 7 to 10 ft occasionally to 13 ft.
.TONIGHT...North winds to 30 kt diminishing to 15 to 25 kt. Waves
7 to 10 ft occasionally to 13 ft subsiding to 4 to 7 ft
occasionally to 9 ft.
.MONDAY...North winds 10 to 20 kt increasing to 30 kt. Waves 4 to
7 ft occasionally to 9 ft.
.MONDAY NIGHT...North winds 15 to 25 kt becoming northeast 10 to
20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.TUESDAY...Northeast winds 10 to 15 kt becoming north 10 to
20 kt. Waves 2 to 4 ft.
.TUESDAY NIGHT...Northeast winds 10 to 20 kt becoming east 5 to
10 kt. Waves 1 to 3 ft.
.WEDNESDAY...Southeast winds 5 to 10 kt becoming south 10 to
15 kt. Waves 1 to 2 ft.
.THURSDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft.

$$

LMZ761-182130-
MAFOR 1816/
MICHIGAN NORTH 14840 12830 12820. Waves 3 to 6 feet building to 4
to 7 feet, then subsiding to 3 to 6 feet this afternoon. Waves 3
to 6 feet tonight. Waves 2 to 4 feet Monday morning.

MICHIGAN SOUTH 14840 11840 11830 11820 11830. Waves 5 to 9 feet
building to 7 to 10 feet this afternoon. Waves 6 to 10 feet
subsiding to 3 to 6 feet tonight. Waves 3 to 6 feet Monday
morning.

$$


MH

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

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