752
FZUS63 KMKX 042002
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
302 PM CDT Sat May 4 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...

Some marine dense fog looks to linger through the afternoon along
the western open waters and western nearshores given the warm,
moist air over the cooler lake.

Otherwise a broad area of low pressure around 29.8 inches will
continue to work its way eastward from WI and over the Lake
tonight. This will drag a cold front across the lake overnight
and shift winds from the east-southeast to the west-northwest.
Will see scattered showers and thunderstorms with some gusty winds
and small hail possible along the front. But it will be drier by
Sunday morning as high pressure around 30.1 inches begins to build
into the western Great Lakes region. Expect lighter and more
variable winds for Sunday into Monday as the high pressure works
its way across the region. Winds then begin to shift out of the
east-southeast Monday afternoon and evening as another low
pressure develops and deepens over the northern Plains. Winds
will pivot between southeasterly and southwesterly through mid-
week, prior to turning out of the north and northwest on Thursday
and Friday as another low pressure moves east of the open waters.
Periods of showers and thunderstorms are forecast from early to
mid week, with conditions drying out by the end of the week and
beginning of next weekend.

LMZ261-362-050330-
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-
302 PM CDT Sat May 4 2024

ROCK ISLAND PASSAGE TO CHARLEVOIX MI NORTH...

.TONIGHT...Southeast winds 10 to 20 kt backing to northwest.
Patchy fog. Rain showers and slight chance of thunderstorms this
evening, then chance of rain showers and slight chance of
thunderstorms overnight. Waves 1 to 3 ft.
.SUNDAY...Northwest winds 10 to 15 kt becoming southwest. Waves
1 to 2 ft.
.SUNDAY NIGHT...Southwest winds 10 to 15 kt veering to northwest
late in the evening, then becoming east after midnight becoming
southeast late. Waves 1 to 2 ft subsiding to nearly calm.
.MONDAY...Southeast winds 5 to 10 kt becoming east. Waves 1 ft or
less.
.MONDAY NIGHT...East winds 5 to 10 kt becoming southeast 10 to
15 kt. Waves 1 to 2 ft building to 1 to 3 ft.
.TUESDAY...Southeast winds 10 to 20 kt becoming east 15 to 25 kt.
Chance of rain showers in the morning, then thunderstorms with a
chance of rain showers in the afternoon. Waves 2 to 4 ft.
.TUESDAY NIGHT...East winds 15 to 25 kt becoming southeast.
Chance of showers and thunderstorms. Waves 2 to 4 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt becoming west. Waves
1 to 3 ft.
.THURSDAY...Northeast winds 10 to 20 kt becoming north. Chance of
rain showers. Waves 1 to 3 ft.

$$

LMZ364-366-563-565-567-868-050330-
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-
302 PM CDT Sat May 4 2024

ROCK ISLAND PASSAGE TO CHARLEVOIX MI SOUTH TO SHEBOYGAN WI TO
PENTWATER MI...

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.TONIGHT...Southwest winds 10 to 20 kt veering to northwest.
Patchy fog. Rain showers likely with slight chance of
thunderstorms this evening, then chance of rain showers and
slight chance of thunderstorms overnight. Waves 1 to 3 ft.
.SUNDAY...Northwest winds 10 to 20 kt backing to south 10 to
15 kt. Waves 1 to 3 ft.
.SUNDAY NIGHT...Southeast winds 10 to 15 kt diminishing to 5 to
10 kt. Waves 1 to 2 ft subsiding to nearly calm.
.MONDAY...Southeast winds 5 to 10 kt becoming northeast. Waves
1 to 2 ft.
.MONDAY NIGHT...East winds 10 to 15 kt becoming southeast 10 to
20 kt. Waves 1 to 3 ft building to 3 to 5 ft.
.TUESDAY...Southeast winds 15 to 25 kt. Chance of showers and
thunderstorms likely in the morning, then showers and
thunderstorms in the afternoon. Waves 4 to 6 ft occasionally to
8 ft.
.TUESDAY NIGHT...Southeast winds 15 to 25 kt becoming southwest
10 to 20 kt. Showers likely with a chance of thunderstorms. Waves
3 to 5 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt. Waves 1 to 3 ft.
.THURSDAY...North winds 10 to 20 kt increasing to 15 to 25 kt.
Chance of rain showers. Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-050330-
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-
302 PM CDT Sat May 4 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.TONIGHT...South winds 10 to 15 kt veering to west 10 to 20 kt
late this evening, then becoming northwest after midnight
increasing to 15 to 25 kt late. Patchy fog. Chance of rain
showers and thunderstorms this evening, then slight chance of
rain showers and thunderstorms overnight. Waves 1 to 3 ft
building to 2 to 4 ft.
.SUNDAY...North winds 10 to 20 kt. Patchy fog in the morning.
Waves 3 to 5 ft.
.SUNDAY NIGHT...North winds 10 to 20 kt becoming northeast 5 to
10 kt from late evening on. Waves 2 to 4 ft subsiding to 1 to
3 ft.
.MONDAY...East winds 10 to 15 kt. Waves 2 to 4 ft.
.MONDAY NIGHT...East winds 10 to 15 kt becoming southeast 10 to
20 kt. Waves 2 to 4 ft building to 3 to 5 ft.
.TUESDAY...Southeast winds 15 to 25 kt. Showers and
thunderstorms. Waves 4 to 6 ft occasionally to 8 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt becoming southwest.
Showers likely with a chance of thunderstorms. Waves 3 to 5 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt becoming south. Waves
1 to 3 ft.
.THURSDAY...North winds 15 to 25 kt becoming northwest. Chance of
showers. Waves 2 to 4 ft.

$$

LMZ761-050330-
MAFOR 0422/
MICHIGAN NORTH 11324 11516 11726 12720 12710 11510. Waves 1 to 3
feet.

MICHIGAN SOUTH 11324 11510 11720 11730 11830 13820. A chance of
showers and thunderstorms this evening. Waves 1 to 3 feet
tonight. Waves 2 to 4 feet Sunday.

$$


Wagner

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

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