159
FZUS63 KMKX 291513
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
913 AM CST Mon Dec 29 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...

Low pressure of 29.0 inches currently over northern Lower
Michigan will continue to deepen and lift northeastward through
today. Northwesterly storm force gusts are already ongoing across
the southern third of the lake and are expected to spread from
south to north through the morning as low pressure lifts
northeastward. A Storm Warning is in effect. This afternoon into
this evening, as low pressure exits into western Quebec, storm
force gusts will diminish to gale force. A downgrade to Gale
Warning will be issued as conditions improve this afternoon and
evening. Gales are expected to continue into Tuesday morning.
Moderate freezing spray is expected throughout today and into
Tuesday morning. A few areas of heavy freezing spray are possible
across far northern portions of Lake Michigan today within the
strongest winds.Winds will remain northwest and will diminish
below gale force Tuesday morning, but will remain brisk through
the remainder of the week.

LMZ261-362-364-366-563-565-567-868-292215-
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-
913 AM CST Mon Dec 29 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

...STORM WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...Northwest storm force winds to 50 kt diminishing
to gales to 45 kt. Visibility one quarter mile or less at times.
Snow late this morning, then chance of snow this afternoon. Waves
15 to 20 ft occasionally to 26 ft subsiding to 14 to 18 ft
occasionally to 23 ft.
.TONIGHT...Northwest gales to 40 kt diminishing to 30 kt.
Freezing spray. Chance of snow and light freezing rain in the
evening, then slight chance of snow overnight. Waves 12 to 16 ft
occasionally to 21 ft subsiding to 8 to 11 ft occasionally to
14 ft.
.TUESDAY...Northwest winds to 30 kt becoming west 15 to 25 kt.
Freezing spray in the morning. Snow in the afternoon. Waves 6 to
9 ft occasionally to 12 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.TUESDAY NIGHT...West winds 15 to 25 kt becoming northwest to
30 kt. Chance of snow. Waves 5 to 8 ft occasionally to 10 ft.
.WEDNESDAY...Northwest winds to 30 kt. Freezing spray. Chance of
snow. Waves 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY NIGHT...Northwest gales to 35 kt diminishing to 30 kt.
Freezing spray. Waves 6 to 9 ft occasionally to 12 ft.
.THURSDAY...Northwest winds to 30 kt becoming west. Freezing
spray. Waves 5 to 8 ft occasionally to 10 ft.
.FRIDAY...West winds to 30 kt diminishing to 15 to 25 kt. Waves
4 to 7 ft occasionally to 9 ft subsiding to 4 to 6 ft
occasionally to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-292215-
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-
913 AM CST Mon Dec 29 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...STORM WARNING IN EFFECT THROUGH LATE TONIGHT...

.REST OF TODAY...Northwest storm force winds to 50 kt diminishing
to gales to 40 kt. Freezing spray. Snow likely late this morning,
then chance of snow this afternoon. Waves 18 to 23 ft
occasionally to 30 ft.
.TONIGHT...Northwest gales to 35 kt diminishing to 30 kt. Chance
of snow and slight chance of light freezing rain in the evening.
Freezing spray. Waves 14 to 18 ft occasionally to 23 ft subsiding
to 12 to 16 ft occasionally to 21 ft.
.TUESDAY...Northwest winds to 30 kt becoming west 15 to 25 kt.
Freezing spray in the morning. Chance of snow in the afternoon.
Waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft
occasionally to 12 ft.
.TUESDAY NIGHT...West winds to 30 kt becoming northwest. Chance
of snow in the evening. Waves 7 to 10 ft occasionally to 13 ft.
.WEDNESDAY...Northwest winds to 30 kt. Freezing spray in the
afternoon. Chance of snow in the afternoon. Waves 8 to 12 ft
occasionally to 16 ft.
.WEDNESDAY NIGHT...Northwest winds to 30 kt diminishing to 15 to
25 kt. Freezing spray. Chance of snow. Waves 8 to 11 ft
occasionally to 14 ft subsiding to 6 to 9 ft occasionally to
12 ft.
.THURSDAY...Northwest winds to 30 kt becoming west. Freezing
spray. Waves 6 to 9 ft occasionally to 12 ft.
.FRIDAY...West winds 15 to 25 kt. Freezing spray. Waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 7 ft occasionally to
9 ft.

$$

&&STORM

&&STORM

LMZ761-292215-
MAFOR 2917/
MICHIGAN NORTH...STORM WARNING IN EFFECT...12770 11760 12750
12740 11730. A chance of snow this afternoon. A chance of snow
and light freezing rain this evening. Waves 15 to 19 feet
subsiding to 13 to 17 feet this afternoon. Waves 10 to 15 feet
subsiding to 7 to 10 feet tonight. Waves 5 to 8 feet Tuesday
morning.

MICHIGAN SOUTH...STORM WARNING IN EFFECT...11761 11751 12750
12740 12730. A chance of snow this afternoon and evening. Waves
16 to 21 feet subsiding to 15 to 19 feet this afternoon. Waves 12
to 17 feet subsiding to 10 to 14 feet tonight. Waves 6 to 10 feet
Tuesday morning.

$$


Kuroski

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

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