050
FZUS63 KMKX 161950
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
250 PM CDT Thu Apr 16 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...

A weakening boundary is slowly moving toward the southern end of
Lake Michigan. This boundary is expected to clear the southern
end of Lake Michigan this evening, with winds becoming light and
variable tonight for a time as a weak surface ridge moves over
the lake. Dense fog will continue over the lake through this
time. Winds then come around to southerly tomorrow morning as a
surface low of 29.5 inches approaches from the central plains.
This surface low will quickly move from Omaha to Duluth from the
morning into the afternoon. Winds will become gusty and
southeasterly Friday night, and strong to severe storms will
move east over the lake as a cold front sweeps through the area.
Winds then become northwesterly behind the cold front Saturday
morning. Breezy northwesterly winds then continue Saturday
through Sunday as the low then races northeast toward Hudson
Bay.

Winds ease Monday morning as high pressure move southeast over
the upper Great Lakes.


LMZ261-362-364-366-563-565-567-868-170315-
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-
250 PM CDT Thu Apr 16 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT FRIDAY...

.TONIGHT...Northeast winds 5 to 10 kt veering to southeast.
Patchy dense fog this evening, then areas of dense fog overnight.
Waves 1 to 2 ft.
.FRIDAY...Southeast winds 10 to 15 kt increasing to 15 to 25 kt.
Areas of dense fog in the morning, then patchy dense fog in the
afternoon. Waves 1 to 3 ft building to 3 to 5 ft.
.FRIDAY NIGHT...Southeast winds 15 to 25 kt becoming southwest.
Rain showers with a chance of thunderstorms. Waves 5 to 8 ft
occasionally to 10 ft.
.SATURDAY...West winds 15 to 25 kt. Chance of rain showers. Waves
4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft
occasionally to 8 ft.
.SATURDAY NIGHT...West winds 15 to 25 kt becoming northwest to
30 kt. Waves 4 to 6 ft occasionally to 8 ft.
.SUNDAY...Northwest winds to 30 kt. Waves 4 to 6 ft occasionally
to 8 ft subsiding to 3 to 5 ft.
.SUNDAY NIGHT...North winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 2 to 4 ft.
.MONDAY...Southwest winds 10 to 15 kt becoming south 10 to 20 kt.
Waves 2 to 4 ft.
.TUESDAY...Southwest gales to 35 kt diminishing to 15 to 25 kt.
Waves 7 to 10 ft occasionally to 13 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-170315-
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-
250 PM CDT Thu Apr 16 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 7 AM CDT FRIDAY...

.TONIGHT...North winds 5 to 10 kt veering to southeast. Areas of
dense fog. Waves 1 to 2 ft.
.FRIDAY...Southeast winds 5 to 10 kt increasing to 15 to 25 kt.
Areas of dense fog in the morning, then patchy dense fog in the
afternoon. Waves 1 to 2 ft building to 3 to 5 ft.
.FRIDAY NIGHT...South winds 15 to 25 kt becoming southwest. Rain
showers with a chance of thunderstorms. Waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft.
.SATURDAY...West winds 15 to 25 kt. Chance of rain showers. Waves
4 to 7 ft occasionally to 9 ft.
.SATURDAY NIGHT...West winds 10 to 20 kt increasing to 15 to
25 kt. Waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft
occasionally to 9 ft.
.SUNDAY...Northwest winds 15 to 25 kt. Waves 4 to 7 ft
occasionally to 9 ft.
.SUNDAY NIGHT...North winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.MONDAY...Southeast winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 2 to 4 ft.
.TUESDAY...Southwest winds to 30 kt diminishing to 15 to 25 kt.
Waves 7 to 10 ft occasionally to 13 ft.

$$

LMZ761-170315-
MAFOR 1622/
MICHIGAN NORTH 11710 19714 11300 19304 12404 11304 11414 11420
11330. Waves 2 feet or less tonight. Waves 2 feet or less
building to 2 to 4 feet Friday.

MICHIGAN SOUTH 11814 11104 12404 11304 11314 11320 11330. Waves 2
feet or less tonight. Waves 1 to 3 feet building to 2 to 4 feet
Friday.

$$


CMiller

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

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