550
FZUS63 KMKX 191457
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
857 AM CST Sun Jan 19 2025

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...

Breezy west northwest winds continue across the open waters
today, as low pressure around 29.4 inches remains nearly
stationary over far northern Quebec and northeastern Hudson Bay.
Arctic high pressure around 31.0 inches will settle into the
northern Rocky Mountains tonight, drifting south into the central
Rocky Mountains Monday through Tuesday. The progression of the
high will help to maintain breezy west northwest winds across
Lake Michigan through the first half of this week.

The breezy west northwest winds will combine with elevated wave
heights and frigid air temperatures to support heavy freezing
spray from this afternoon through Tuesday afternoon. Heavy
Freezing Spray Warnings remain in effect for the southern half of
Lake Michigan from Noon CST today through 3 PM CST Tuesday. It is
possible that areas of heavy freezing spray could continue into
Tuesday evening over portions of the warned area, with trends
being monitored over coming forecasts for any potential
extensions.

Low pressure around 29.5 inches will move south into the Canadian
Great Plains Tuesday night into Wednesday, promoting a southwest
wind shift over Lake Michigan. Southwest winds could be breezy
Wednesday afternoon. This will support continued freezing spray
potential into Wednesday afternoon, with any freezing spray
expected to be lighter relative to earlier in the week.

LMZ261-362-364-366-563-565-192215-
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-
857 AM CST Sun Jan 19 2025

TWO RIVERS WI TO MANISTEE MI NORTH...

.REST OF TODAY...Northwest winds 10 to 20 kt. Chance of snow.
Waves 3 to 5 ft.
.TONIGHT...Northwest winds 15 to 25 kt. Chance of snow. Waves
4 to 6 ft occasionally to 8 ft.
.MONDAY...Northwest winds 15 to 25 kt becoming west. Chance of
snow. Waves 4 to 6 ft occasionally to 8 ft.
.MONDAY NIGHT...West winds to 30 kt. Chance of snow in the
evening, then chance of flurries overnight. Waves 4 to 6 ft
occasionally to 8 ft.
.TUESDAY...West winds 15 to 25 kt. Chance of flurries. Waves 4 to
6 ft occasionally to 8 ft.
.TUESDAY NIGHT...West winds to 30 kt becoming southwest. Waves
4 to 6 ft occasionally to 8 ft.
.WEDNESDAY...Southwest winds to 30 kt. Freezing spray. Waves 6 to
9 ft occasionally to 12 ft.
.THURSDAY...West winds 10 to 20 kt. Waves 3 to 5 ft subsiding to
2 to 4 ft.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-192215-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 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 Pentwater to Manistee MI 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-
857 AM CST Sun Jan 19 2025

TWO RIVERS WI TO MANISTEE MI SOUTH...

...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM NOON CST TODAY
THROUGH TUESDAY AFTERNOON...

.REST OF TODAY...Northwest winds 10 to 20 kt increasing to 15 to
25 kt. Freezing spray. Chance of snow. Waves 5 to 8 ft
occasionally to 10 ft.
.TONIGHT...Northwest winds 15 to 25 kt becoming west. Heavy
freezing spray. Chance of snow. Waves 6 to 9 ft occasionally to
12 ft.
.MONDAY...West winds 15 to 25 kt increasing to 30 kt. Heavy
freezing spray. Chance of snow. Waves 6 to 9 ft occasionally to
12 ft.
.MONDAY NIGHT...West winds to 30 kt diminishing to 15 to 25 kt.
Heavy freezing spray. Chance of snow. Waves 6 to 9 ft
occasionally to 12 ft.
.TUESDAY...West winds 15 to 25 kt. Heavy freezing spray. Chance
of snow. Waves 5 to 8 ft occasionally to 10 ft.
.TUESDAY NIGHT...West winds 10 to 20 kt becoming southwest 15 to
25 kt. Heavy freezing spray. Waves 4 to 7 ft occasionally to
9 ft.
.WEDNESDAY...South winds to 30 kt becoming southwest. Freezing
spray. Waves 6 to 9 ft occasionally to 12 ft building to 8 to
11 ft occasionally to 14 ft.
.THURSDAY...West winds 10 to 20 kt. Waves 4 to 7 ft occasionally
to 9 ft.

$$

LMZ761-192215-
MAFOR 1917/
MICHIGAN NORTH 12720 13730 12732 11632. A chance of snow. Waves 3
to 6 feet.

MICHIGAN SOUTH 11730 11737 14732 12632. Waves 5 to 8 feet.

$$
Wood

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

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