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National Weather Service Marine Forecast FZUS63 KMKX

FZUS63 KMKX 232022
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
222 PM CST Mon Nov 23 2020

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

Brief ridging of 30.4 inches will shift eastward from the western
Great Lakes to the eastern Great Lakes tonight.

On Tuesday, low pressure will slowly begin to lift northeast
towards the Midwest, from the central Plains. This will enhance
the surface pressure gradient Tuesday into Wednesday, bringing a
period of gusty southeast to south winds. As the low pressure
system lifts northeast across southern Lake Michigan on Wednesday,
it is expected to weaken to 29.7 inches. By Thursday, the low
weakens further over Lake Huron and a cold front extending well
south from low pressure up near the Hudson Bay moves over the lake
Thursday night into Friday.

&&

LMZ261-362-364-366-563-565-567-868-240415-
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-
222 PM CST Mon Nov 23 2020

SHEBOYGAN WI TO PENTWATER MI NORTH...

TONIGHT
North winds 10 to 15 kt veering to southeast. Waves
2 to 4 ft subsiding to 1 to 3 ft.

TUESDAY
Southeast winds 10 to 20 kt increasing to 30 kt.
Chance of rain in the morning, then rain in the afternoon. Waves
2 to 4 ft building to 5 to 8 ft occasionally to 10 ft.

TUESDAY NIGHT
South winds to 30 kt diminishing to 15 to 25 kt
after midnight, then becoming southwest 10 to 15 kt late. Rain in
the evening, then rain likely overnight. Waves 6 to 9 ft
occasionally to 12 ft subsiding to 4 to 6 ft occasionally to
8 ft.

WEDNESDAY
Southeast winds 10 to 15 kt becoming east. Chance of
rain. Waves 3 to 5 ft subsiding to 1 to 3 ft.

WEDNESDAY NIGHT
East winds 10 to 20 kt becoming northeast
10 to 15 kt. Chance of rain in the evening. Waves 1 to 3 ft.

THURSDAY
Northwest winds 5 to 10 kt becoming southwest 10 to
20 kt in the afternoon. Waves 1 to 2 ft.

THURSDAY NIGHT
Southwest winds 10 to 20 kt becoming west.
Waves 2 to 4 ft.

FRIDAY
West winds 10 to 15 kt. Waves 1 to 3 ft.

SATURDAY
West winds 10 to 20 kt becoming southwest. Waves 1 to
3 ft. 



LMZ080-669-671-673-675-777-779-870-872-874-876-878-240415-
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-
222 PM CST Mon Nov 23 2020

SHEBOYGAN WI TO PENTWATER MI SOUTH...

TONIGHT
Northeast winds 5 to 10 kt becoming east late this
evening, then becoming southeast after midnight becoming 10 to
20 kt late. Chance of rain overnight. Waves 1 to 3 ft.

TUESDAY
Southeast winds 10 to 20 kt increasing to 30 kt. Rain.
Waves 2 to 4 ft building to 5 to 8 ft occasionally to 10 ft.

TUESDAY NIGHT
South winds to 30 kt diminishing to 10 to 20 kt.
Rain in the evening, then rain likely overnight. Waves 6 to 9 ft
occasionally to 12 ft subsiding to 4 to 6 ft occasionally to
8 ft.

WEDNESDAY
Southeast winds 10 to 15 kt becoming east. Rain.
Waves 3 to 5 ft subsiding to 1 to 3 ft.

WEDNESDAY NIGHT
Northeast winds 10 to 15 kt becoming
northwest. Chance of rain in the evening. Waves 1 to 2 ft.

THURSDAY
West winds 10 to 15 kt becoming southwest. Waves 1 to
2 ft.

THURSDAY NIGHT
Southwest winds 10 to 15 kt. Waves 1 to 3 ft.

FRIDAY
West winds 10 to 15 kt. Waves 1 to 3 ft.

SATURDAY
West winds 10 to 15 kt. Waves 1 to 3 ft. 



LMZ761-240415-
MAFOR 2322/
MICHIGAN NORTH 11820 12100 11310 11320 11330 12346. Waves 2 to 4
feet subsiding to 1 to 3 feet tonight. Waves 1 to 3 feet building
to 4 to 7 feet Tuesday.

MICHIGAN SOUTH 11800 12200 11310 11320 12336 11346. Chance of
rain overnight. Waves 1 to 3 feet tonight. Waves 2 to 4 feet
building to 4 to 7 feet Tuesday.


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

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