372
FZUS63 KMKX 220207
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
907 PM CDT Tue May 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...

Low pressure around 29.3 inches near the Twin Cities will
strengthen to 29.1 inches and track to north of Lake Superior
overnight. South gales are expected into the overnight hours over
the southern two thirds of the lake. Waves will increase as well
during this time.

Widespread thunderstorms are expected to move across the lake into
the overnight hours, and may contain damaging winds.

A strong cold front will then veer the winds to southwesterly
late tonight, with the gusty winds continuing over the north half
of the lake through Wednesday. Light to modest southwest winds
will then prevail over the entire lake for Wednesday night and
Thursday.

LMZ261-362-364-563-220930-
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 Rock Island Passage to Sturgeon Bay WI-
907 PM CDT Tue May 21 2024

STURGEON BAY WI TO POINT BETSIE MI NORTH...

.REST OF TONIGHT...East winds 15 to 25 kt becoming southeast to
30 kt, then becoming south late. Scattered thunderstorms with
isolated showers through early evening, then scattered showers
and thunderstorms overnight. Waves 2 to 4 ft building to 8 to
11 ft occasionally to 14 ft.
.WEDNESDAY...Southwest winds to 30 kt. Waves 8 to 11 ft
occasionally to 14 ft subsiding to 6 to 9 ft occasionally to
12 ft.
.WEDNESDAY NIGHT...Southwest winds to 30 kt diminishing to 10 to
20 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to
5 ft.
.THURSDAY...Southwest winds 15 to 25 kt. Waves 2 to 4 ft.
.THURSDAY NIGHT...Southwest winds 10 to 20 kt diminishing to
10 to 15 kt. Waves 2 to 4 ft.
.FRIDAY...Northeast winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.FRIDAY NIGHT...East winds 10 to 20 kt veering to south. Showers
likely with a chance of thunderstorms. Waves 2 to 4 ft.
.SATURDAY...Southwest winds 10 to 20 kt increasing to 15 to
25 kt. Chance of showers. Waves 2 to 4 ft.
.SUNDAY...West winds 10 to 15 kt becoming southwest 10 to 20 kt.
Waves 1 to 2 ft.

$$

LMZ080-366-565-567-669-671-673-675-777-779-868-870-872-874-876-
878-220930-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
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 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 Pentwater to Manistee MI 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-
907 PM CDT Tue May 21 2024

STURGEON BAY WI TO POINT BETSIE MI SOUTH...

...GALE WARNING IN EFFECT UNTIL 4 AM CDT WEDNESDAY...

.REST OF TONIGHT...South gales to 35 kt becoming southwest.
Showers and scattered thunderstorms through early evening, then
scattered showers and thunderstorms overnight. Waves 4 to 7 ft
occasionally to 9 ft building to 8 to 11 ft occasionally to 14 ft.
.WEDNESDAY...Southwest 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.
.WEDNESDAY NIGHT...Southwest winds 10 to 20 kt. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft.
.THURSDAY...Southwest winds 10 to 20 kt becoming south. Waves
2 to 4 ft.
.THURSDAY NIGHT...South winds 10 to 20 kt diminishing to 5 to
10 kt overnight. Waves 2 to 4 ft.
.FRIDAY...Southeast winds 10 to 20 kt. Chance of showers and
thunderstorms in the afternoon. Waves 2 to 4 ft.
.FRIDAY NIGHT...South winds 10 to 20 kt becoming west. Chance of
showers and thunderstorms. Waves 2 to 4 ft.
.SATURDAY...West winds 10 to 20 kt becoming southwest. Waves 2 to
4 ft.
.SUNDAY...South winds 10 to 15 kt backing to east. Waves 1 to
3 ft.

$$

LMZ761-220930-
MAFOR 2204/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11356 19359 11450 19459
11440 14540 11530. Waves 7 to 10 feet overnight. Waves 7 to 10
feet subsiding to 5 to 8 feet Wednesday. Waves 4 to 7 feet
subsiding to 3 to 6 feet Wednesday evening.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...11450 19459 11550 11540
13530 11520 11510. Waves 6 to 10 feet overnight. Waves 6 to 9
feet subsiding to 3 to 6 feet Wednesday. Waves 2 to 4 feet
subsiding to 1 to 3 feet Wednesday evening.

$$
Wood

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

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