220
FZUS63 KMKX 162013
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
213 PM CST Thu Jan 16 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 to northwest winds this afternoon will briefly ease
this evening into early tonight as high pressure of 30.2 inches
moves into the southern Ohio River Valley from the west. Winds
will then quickly increase out of the south to southwest later
tonight into Friday as the high departs and low pressure of 29.2
inches travels from southern Manitoba into southwest Ontario. Gale
force gusts to 40 knots are expected tomorrow.

The low to the north will drag a cold front through Friday
evening, with winds becoming northwest behind the front while
likely dropping below gale force. Breezy northwest to west winds
will then continue through the first part of next week and will
combine with a much colder airmass for a period of freezing spray.
Heavy freezing spray is mostly likely across the eastern two-
thirds of the lake early Sunday into early Wednesday.

LMZ261-362-364-366-563-565-567-868-170430-
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-
213 PM CST Thu Jan 16 2025

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY
AFTERNOON...

.TONIGHT...Northwest winds 15 to 25 kt diminishing to 10 to 20 kt
late this evening, then becoming west 10 to 15 kt after midnight
becoming southwest 10 to 20 kt late. Waves 4 to 6 ft occasionally
to 8 ft subsiding to 2 to 4 ft.
.FRIDAY...South winds to 30 kt becoming southwest gales to 40 kt.
Slight chance of snow in the morning, then slight chance of rain
in the afternoon. Waves 5 to 8 ft occasionally to 10 ft building
to 10 to 14 ft occasionally to 18 ft.
.FRIDAY NIGHT...Southwest gales to 35 kt becoming northwest to
30 kt. Waves 8 to 12 ft occasionally to 16 ft subsiding to 7 to
10 ft occasionally to 13 ft.
.SATURDAY...Northwest gales to 35 kt diminishing to 30 kt.
Freezing spray in the morning. Waves 5 to 8 ft occasionally to
10 ft.
.SATURDAY NIGHT...Northwest winds to 30 kt. Waves 4 to 7 ft
occasionally to 9 ft.
.SUNDAY...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Waves 4 to 7 ft occasionally to 9 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt. Heavy freezing spray.
Chance of snow showers. Waves 5 to 8 ft occasionally to 10 ft.
.MONDAY...Northwest winds to 30 kt becoming west 15 to 25 kt.
Heavy freezing spray. Chance of snow showers. Waves 4 to 7 ft
occasionally to 9 ft.
.TUESDAY...West winds 15 to 25 kt. Waves 4 to 6 ft occasionally
to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-170430-
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-
213 PM CST Thu Jan 16 2025

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY
AFTERNOON...

.TONIGHT...Northwest winds 15 to 25 kt diminishing to 10 to 20 kt
late this evening, then becoming southwest 10 to 15 kt after
midnight increasing to 10 to 20 kt late. Waves 4 to 7 ft
occasionally to 9 ft subsiding to 3 to 5 ft.
.FRIDAY...South winds to 30 kt increasing to gales to 40 kt late
in the morning, then becoming south gales to 40 kt early in the
afternoon becoming southwest gales to 35 kt late. Waves 4 to 7 ft
occasionally to 9 ft building to 10 to 14 ft occasionally to
18 ft.
.FRIDAY NIGHT...Southwest gales to 35 kt becoming west to 30 kt
late in the evening, then becoming northwest 15 to 25 kt after
midnight increasing to 30 kt late. Chance of rain in the evening,
then chance of snow and rain overnight. Waves 8 to 12 ft
occasionally to 16 ft subsiding to 6 to 9 ft occasionally to
12 ft.
.SATURDAY...Northwest winds to 30 kt. Waves 8 to 11 ft
occasionally to 14 ft.
.SATURDAY NIGHT...Northwest winds 15 to 25 kt diminishing to
10 to 20 kt. Freezing spray. Chance of snow showers overnight.
Waves 6 to 9 ft occasionally to 12 ft.
.SUNDAY...Northwest winds 15 to 25 kt. Freezing spray in the
morning, then heavy freezing spray in the afternoon. Chance of
snow showers. Waves 6 to 9 ft occasionally to 12 ft.
.SUNDAY NIGHT...Northwest winds to 30 kt. Heavy freezing spray.
Chance of snow showers. Waves 6 to 9 ft occasionally to 12 ft.
.MONDAY...West winds to 30 kt. Heavy freezing spray. Chance of
snow showers. Waves 6 to 9 ft occasionally to 12 ft.
.TUESDAY...West winds 15 to 25 kt. Heavy freezing spray. Waves
5 to 8 ft occasionally to 10 ft.

$$

LMZ761-170430-
MAFOR 1623/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11730 11720 11610 11520
11440 12450 11550. Waves 3 to 6 feet subsiding to 1 to 3 feet
tonight. Waves 4 to 7 feet building to 10 to 14 feet Friday.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...11730 11720 11610 11520
11440 12450 11550. Waves 4 to 7 feet subsiding to 1 to 3 feet
tonight. Waves 4 to 7 feet building to 9 to 13 feet Friday.

$$


DDV

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

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