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FZUS63 KMKX 041100

GLFLM 



OPEN LAKE FORECAST for Lake Michigan

National Weather Service Milwaukee/Sullivan WI

600 AM 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...



Areas of low clouds and patchy fog are moving into the open waters

from Lower Michigan this morning. While not expected to be

widespread, visibilities could briefly drop to and below a mile in

spots over the southern half of the lake. Dense fog advisories are

not planned at this time, though trends will continue to be

monitored.



A weak, 29.9 inch low pressure center will approach

from the west today, dragging a cold front across the open waters

in the process. Scattered showers and thunderstorms will be 

possible along the front. Most activity is expected to remain 

sub-severe, though an isolated strong storm with small hail and 

gusty winds can't be ruled out. A 30.1 inch high pressure will 

approach from the northern Great Plains on Sunday, resulting in 

light & variable surface winds. Winds will begin to shift out of 

the east-southeast Monday afternoon & evening as a 29.1 inch low 

pressure center develops over the northern Great Plains. Winds 

will pivot between southeasterly and southwesterly through mid- 

week, prior to turning out of the north and northwest on Thursday 

& Friday as a 29.6 inch low pressure center 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 & beginning of next weekend.



LMZ261-362-364-366-563-565-567-868-041515-

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-

600 AM CDT Sat May 4 2024



SHEBOYGAN WI TO PENTWATER MI NORTH...



.TODAY...Southeast winds 10 to 20 kt. Waves 1 to 3 ft. 

.TONIGHT...South winds 10 to 20 kt veering to northwest. Chance

of rain showers and slight chance of thunderstorms. Waves 1 to

3 ft. 

.SUNDAY...Northwest winds 10 to 20 kt backing to south. Waves

1 to 3 ft. 

.SUNDAY NIGHT...Southeast winds 10 to 15 kt becoming east. Waves

1 to 2 ft. 

.MONDAY...East winds 5 to 10 kt becoming northeast in the

afternoon. 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. Rain showers with a

chance of thunderstorms. Waves 4 to 6 ft occasionally to 8 ft. 

.WEDNESDAY...Southwest winds 10 to 20 kt becoming south. Waves

1 to 3 ft.  



$$



LMZ080-669-671-673-675-777-779-870-872-874-876-878-041515-

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-

600 AM CDT Sat May 4 2024



SHEBOYGAN WI TO PENTWATER MI SOUTH...



.TODAY...East winds 10 to 20 kt becoming southeast. Waves 1 to

2 ft. 

.TONIGHT...South winds 10 to 15 kt veering to west 10 to 20 kt

late in the evening, then becoming northwest after midnight

increasing to 15 to 25 kt late. Chance of rain showers and

thunderstorms in the evening, then slight chance of rain showers

and thunderstorms overnight. Waves 1 to 3 ft building to 2 to

4 ft. 

.SUNDAY...Northwest winds 15 to 25 kt becoming north 10 to 20 kt.

Waves 3 to 5 ft. 

.SUNDAY NIGHT...Northeast winds 10 to 20 kt diminishing to 5 to

10 kt overnight. Waves 2 to 4 ft subsiding to 1 to 3 ft. 

.MONDAY...East winds 10 to 15 kt increasing to 10 to 20 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 becoming south. Showers

with a chance of thunderstorms. Waves 4 to 6 ft occasionally to

8 ft. 

.WEDNESDAY...Southwest winds 10 to 20 kt becoming south. Waves

1 to 3 ft.  



$$



LMZ761-041515-

MAFOR 0410 AMD/

MICHIGAN NORTH 12310 12320 11420 11526 11620 11720. Waves 2 feet

or less. 



MICHIGAN SOUTH 11220 11320 11310 12320 11510 11720 11730. A

chance of showers and thunderstorms this evening. Waves 2 feet or

less today. Waves 1 to 3 feet tonight. 



$$





Quigley



Experimental modernized open lake forecast is available online at

weather.gov/mkx/glftable



Graphical marine forecasts are available online at:

weather.gov/greatlakes