092
FZUS63 KMKX 161338
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
838 AM CDT Thu Jul 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...

Wildfire smoke from northern MN and northwestern Ontario has
spread across all open waters of Lake Michigan and will reduce
visibility to 1 nm or less at times. Thus a Marine Dense Smoke
Advisory continues today through Friday for all open waters.

Otherwise, lighter winds expected again today as another high
pressure around 30.1 inches briefly builds back into the region
before influence from a low pressure around 29.7 inches developing
over the northern Plains pushes eastward through the weekend
bringing more southwesterly flow Friday into Saturday. Then as
the low pressure tracks northeastward, it will drag a cold front
across the Lake resulting in northerly wind shift through the day
Saturday with another high pressure building over the region for
Sunday. Additionally will see periodic shower and thunderstorm
chances across the lake for the end of the week through the
weekend.

LMZ261-362-364-366-563-565-567-868-162115-
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-
838 AM CDT Thu Jul 16 2026

SHEBOYGAN WI TO PENTWATER MI NORTH...

...MARINE DENSE SMOKE ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY...

.REST OF TODAY...North winds 5 to 10 kt becoming west 10 to
15 kt. Smoke. Waves 1 ft or less.
.TONIGHT...North winds 10 to 15 kt veering to east 5 to 10 kt.
Smoke. Waves 1 ft or less.
.FRIDAY...Southeast winds 5 to 10 kt becoming south 10 to 15 kt.
Smoke. Waves 1 to 2 ft.
.FRIDAY NIGHT...South winds 10 to 20 kt becoming southwest 15 to
25 kt. Areas of smoke in the evening. Chance of showers in the
evening, then showers with a chance of thunderstorms overnight.
Waves 1 to 3 ft building to 2 to 4 ft.
.SATURDAY...Northwest winds to 30 kt becoming north. Chance of
showers. Waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft.
.SATURDAY NIGHT...North winds to 30 kt diminishing to 10 to
20 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft.
.SUNDAY...Northeast winds 10 to 15 kt backing to southwest 10 to
20 kt. Waves 1 to 3 ft subsiding to 1 to 2 ft.
.MONDAY...Southwest winds to 30 kt increasing to gales to 35 kt.
Chance of showers. Waves 4 to 6 ft occasionally to 8 ft building
to 5 to 8 ft occasionally to 10 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-162115-
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-
838 AM CDT Thu Jul 16 2026

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...MARINE DENSE SMOKE ADVISORY IN EFFECT UNTIL 7 PM CDT FRIDAY...

.REST OF TODAY...Northeast winds 5 to 10 kt increasing to 10 to
15 kt. Smoke through mid morning, then areas of smoke this
afternoon. Waves 1 ft or less.
.TONIGHT...Northeast winds 10 to 15 kt becoming east. Areas of
smoke. Waves 1 to 2 ft.
.FRIDAY...Southeast winds 5 to 10 kt becoming south. Smoke in the
morning, then patchy smoke in the afternoon. Waves 1 to 2 ft.
.FRIDAY NIGHT...South winds 10 to 20 kt becoming southwest. Waves
1 to 3 ft building to 2 to 4 ft.
.SATURDAY...West winds 15 to 25 kt veering to north to 30 kt.
Chance of showers in the afternoon. Waves 3 to 5 ft building to
4 to 7 ft occasionally to 9 ft.
.SATURDAY NIGHT...North winds to 30 kt becoming northeast 15 to
25 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
7 ft occasionally to 9 ft.
.SUNDAY...Northeast winds 10 to 15 kt becoming north 10 to 20 kt.
Waves 3 to 5 ft subsiding to 1 to 3 ft.
.MONDAY...Southwest winds 15 to 25 kt becoming south to 30 kt.
Waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.

$$

LMZ761-162115-
MAFOR 1616/
MICHIGAN NORTH 12610 11710 11100 12200 12300. Waves 1 foot or
less.

MICHIGAN SOUTH 11100 13110 11100 11200 11300 11400. Waves 1 foot
or less.

$$

Wagner

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

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