Great Lakes Forecast
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FZUS63 KMKX 211938
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
238 PM CDT Thu Mar 21 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...

Winds will become more easterly tonight as high pressure of 30.4
inches pushes eastward across the eastern Great Lakes. Low
pressure of 29.8 inches will pass by to the south of the lake
tonight and Friday, with winds turning more northerly late Friday
as the low moves east of the region. Breezy northerly winds will
continue Saturday, before becoming easterly again on Sunday.
Winds may reach gale force at times Monday and Tuesday as a
stronger low pressure system moves through the region.

LMZ261-362-364-366-563-565-567-868-220315-
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-
238 PM CDT Thu Mar 21 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Southeast winds 5 to 10 kt increasing to 10 to 15 kt.
Chance of snow overnight. Waves 1 to 2 ft.
.FRIDAY...Southeast winds 10 to 15 kt becoming east 5 to 10 kt.
Snow in the morning, then slight chance of snow in the afternoon.
Waves 1 to 3 ft building to 2 to 4 ft.
.FRIDAY NIGHT...Northeast winds 5 to 10 kt becoming north 10 to
20 kt. Waves 1 to 3 ft building to 4 to 6 ft occasionally to
8 ft.
.SATURDAY...North winds 10 to 20 kt. Waves 4 to 6 ft occasionally
to 8 ft subsiding to 3 to 5 ft.
.SATURDAY NIGHT...Northeast winds 10 to 15 kt becoming southeast.
Waves 1 to 3 ft subsiding to 1 to 2 ft.
.SUNDAY...Southeast winds 15 to 25 kt. Waves 2 to 4 ft building
to 3 to 5 ft.
.SUNDAY NIGHT...Southeast winds to 30 kt. Snow likely. Waves 4 to
6 ft occasionally to 8 ft building to 5 to 8 ft occasionally to
10 ft.
.MONDAY...Southeast gales to 35 kt. Rain likely with a chance of
snow. Waves 6 to 9 ft occasionally to 12 ft.
.TUESDAY...South winds to 30 kt becoming southwest. Rain. Waves
6 to 9 ft occasionally to 12 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-220315-
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-
238 PM CDT Thu Mar 21 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...East winds 10 to 15 kt increasing to 10 to 20 kt.
Chance of snow overnight. Waves 1 to 3 ft.
.FRIDAY...East winds 10 to 20 kt. Snow in the morning, then snow
and slight chance of rain in the afternoon. Waves 2 to 4 ft
building to 3 to 5 ft.
.FRIDAY NIGHT...Northeast winds 10 to 20 kt becoming north 15 to
25 kt. Waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft.
.SATURDAY...North winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 4 to 7 ft occasionally to 9 ft.
.SATURDAY NIGHT...Northeast winds 10 to 20 kt becoming east.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
.SUNDAY...Southeast winds 15 to 25 kt increasing to 30 kt. Waves
3 to 5 ft building to 4 to 6 ft occasionally to 8 ft.
.SUNDAY NIGHT...Southeast winds to 30 kt increasing to gales to
35 kt. Chance of rain and snow. Waves 4 to 7 ft occasionally to
9 ft building to 5 to 8 ft occasionally to 10 ft.
.MONDAY...Southeast gales to 35 kt. Chance of rain. Waves 6 to
9 ft occasionally to 12 ft.
.TUESDAY...South winds to 30 kt becoming southwest. Chance of
rain. Waves 6 to 9 ft occasionally to 12 ft.

$$

LMZ761-220315-
MAFOR 2122/
MICHIGAN NORTH 14300 11317 11327 11310 11210. Waves 2 feet or
less tonight. Waves 1 to 3 feet Friday.

MICHIGAN SOUTH 11200 12210 11217 11227 12327 11217. Waves 1 to 3
feet tonight. Waves 1 to 3 feet building to 2 to 4 feet Friday.

$$


Boxell

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

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


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