233
FZUS63 KMKX 050801
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
301 AM CDT Fri Jun 5 2026

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 of 29.6 inches over the Central Plains will connect
with another low of 29.7 inches over southwest Ontario. The
Canadian low will track across the northern Great Lakes today,
bringing prevailing southwesterly winds to Lake Michigan along
with shower and thunderstorm chances ahead of a cold front. Then
expect the cold front to push through the region this evening
into Saturday, bringing additional shower and thunderstorm
chances along with a more northwest to westerly wind shift behind
it into Saturday. Then winds weaken and become more variable as
high pressure around 30.0 inches builds across the region later
Saturday into Sunday. Looking ahead, the start of next week will
bring an additional low pressure system to develop over the Plains
and bring a return of southerly winds to the Upper Great Lakes.

LMZ261-362-364-366-563-565-567-868-051530-
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-
301 AM CDT Fri Jun 5 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...South winds 10 to 20 kt. Chance of showers this morning,
then slight chance of showers this afternoon. Waves 2 to 4 ft.
.TONIGHT...South winds 10 to 20 kt becoming west 10 to 15 kt.
Chance of showers and slight chance of thunderstorms. Waves 2 to
4 ft subsiding to 1 to 3 ft.
.SATURDAY...West winds 5 to 10 kt becoming southwest 10 to 15 kt.
Waves 1 to 3 ft.
.SATURDAY NIGHT...Northeast winds 10 to 15 kt diminishing to 5 to
10 kt. Waves 1 to 2 ft.
.SUNDAY...Northeast winds 5 to 10 kt increasing to 10 to 20 kt in
the afternoon. Waves 1 ft or less.
.SUNDAY NIGHT...East winds 10 to 20 kt becoming southeast. Waves
1 to 2 ft building to 2 to 4 ft.
.MONDAY...Southeast winds 10 to 20 kt becoming east. Waves 2 to
4 ft.
.TUESDAY...Southeast winds 10 to 20 kt becoming south. Chance of
showers. Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-051530-
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-
301 AM CDT Fri Jun 5 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...South winds 10 to 20 kt increasing to 15 to 25 kt.
Showers and slight chance of thunderstorms this morning, then
showers likely with a chance of thunderstorms this afternoon.
Waves 2 to 4 ft.
.TONIGHT...Southwest winds 10 to 20 kt diminishing to 10 to
15 kt. Chance of showers and thunderstorms. Waves 2 to 4 ft.
.SATURDAY...Southwest winds 10 to 20 kt diminishing to 10 to
15 kt late in the morning, then becoming southwest 10 to 15 kt
early in the afternoon backing to east 5 to 10 kt late. Waves
1 to 3 ft.
.SATURDAY NIGHT...Northeast winds 5 to 10 kt. Waves 1 to 2 ft.
.SUNDAY...Northeast winds 5 to 10 kt increasing to 10 to 15 kt.
Waves 1 ft or less.
.SUNDAY NIGHT...Northeast winds 10 to 15 kt becoming east 10 to
20 kt. Waves 1 to 3 ft building to 2 to 4 ft.
.MONDAY...Southeast winds 10 to 20 kt. Waves 3 to 5 ft.
.TUESDAY...South winds 10 to 20 kt. Chance of showers. Waves 2 to
4 ft.

$$

LMZ761-051530-
MAFOR 0510/
MICHIGAN NORTH 11420 11426 13420 12510 11610. Waves 1 to 3 feet.

MICHIGAN SOUTH 11420 12426 11436 11420 12520 11510. A chance of
thunderstorms this afternoon and tonight. Waves 1 to 3 feet
building to 2 to 4 feet today. Waves 1 to 3 feet tonight.

$$


Cronce

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

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