000
FZUS63 KMKX 121947
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
247 PM CDT Fri Apr 12 2024

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...

The low pressure of 28.9 inches over Ontario continues to move
out of the Great Lakes region, bringing with it gales of around
30-40 knots across Lake Michigan. The greatest winds remain
isolated to the southern portion`s eastern shore, where gales have
reached as high as 45 knots. Winds still expected to calm going
into the evening, but gales will remain over the upper third of
Lake Michigan before subsequently dropping off.

By tomorrow afternoon, a building ridge of 30.2 over the Central
United States will settle over the area, bringing with it
southerly winds of around 10-15 knots. Over the lower third of the
lake, there is a possibility of some gustier winds over the water
and eastern nearshore, but it will be brief and taper off going
into Saturday evening. A passing shortwave will shift winds back
out of the north/northwest by early afternoon Sunday, with light
variable winds into Monday. Gusty southerly winds expected to
return by late Tuesday over the open water.

LMZ261-362-364-563-130330-
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 Rock Island Passage to Sturgeon Bay WI-
247 PM CDT Fri Apr 12 2024

STURGEON BAY WI TO POINT BETSIE MI NORTH...

...GALE WARNING IN EFFECT UNTIL 1 AM CDT SATURDAY...

.TONIGHT...Northwest gales to 40 kt diminishing to 30 kt. Waves
8 to 11 ft occasionally to 14 ft subsiding to 4 to 6 ft
occasionally to 8 ft.
.SATURDAY...Northwest winds to 30 kt diminishing to 10 to 20 kt
late in the morning, then becoming southwest early in the
afternoon becoming southwest 10 to 20 kt late. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft.
.SATURDAY NIGHT...South winds 10 to 20 kt becoming southeast.
Chance of rain showers. Waves 3 to 5 ft.
.SUNDAY...North winds 10 to 15 kt. Waves 2 to 4 ft.
.SUNDAY NIGHT...North winds 10 to 15 kt backing to west. Waves
1 to 3 ft.
.MONDAY...Southwest winds 10 to 15 kt. Waves 1 to 2 ft.
.MONDAY NIGHT...East winds 10 to 20 kt. Waves 1 to 2 ft building
to 1 to 3 ft.
.TUESDAY...East winds 15 to 25 kt increasing to 30 kt. Chance of
rain showers. Waves 2 to 4 ft building to 3 to 5 ft.
.WEDNESDAY...Southeast winds to 30 kt becoming south. Showers
likely. Waves 5 to 8 ft occasionally to 10 ft.

$$

LMZ366-565-567-868-130330-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
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-
247 PM CDT Fri Apr 12 2024

STURGEON BAY WI TO POINT BETSIE MI SOUTH TO SHEBOYGAN WI TO
PENTWATER MI...

...GALE WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.TONIGHT...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft.
.SATURDAY...Northwest winds 10 to 20 kt becoming west late in the
morning, then becoming southwest 5 to 10 kt early in the
afternoon becoming south 10 to 20 kt late. Waves 3 to 5 ft
subsiding to 1 to 3 ft.
.SATURDAY NIGHT...South winds 10 to 20 kt becoming southwest.
Chance of rain showers. Waves 3 to 5 ft.
.SUNDAY...Northwest winds 10 to 20 kt becoming north. Waves 3 to
5 ft.
.SUNDAY NIGHT...Northeast winds 10 to 15 kt veering to southeast.
Waves 1 to 3 ft subsiding to 1 ft or less.
.MONDAY...South winds 5 to 10 kt increasing to 10 to 15 kt. Waves
1 to 2 ft.
.MONDAY NIGHT...Southeast winds 10 to 20 kt becoming east. Waves
2 to 4 ft.
.TUESDAY...Southeast winds to 30 kt. Showers likely. Waves 4 to
6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to
9 ft.
.WEDNESDAY...South winds to 30 kt becoming southwest. Showers
likely. Waves 6 to 9 ft occasionally to 12 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-130330-
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-
247 PM CDT Fri Apr 12 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.TONIGHT...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6 ft
occasionally to 8 ft.
.SATURDAY...Northwest winds 15 to 25 kt becoming west 10 to 20 kt
late in the morning, then becoming southwest 10 to 15 kt early in
the afternoon becoming south 10 to 20 kt late. Waves 3 to 5 ft
subsiding to 2 to 4 ft.
.SATURDAY NIGHT...South winds 10 to 20 kt becoming southwest
15 to 25 kt. Chance of rain showers overnight. Waves 4 to 6 ft
occasionally to 8 ft.
.SUNDAY...West winds 10 to 20 kt veering to north. Waves 4 to
6 ft occasionally to 8 ft.
.SUNDAY NIGHT...North winds 10 to 15 kt becoming northeast 5 to
10 kt. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.MONDAY...Southeast winds 10 to 15 kt. Waves 1 to 3 ft.
.MONDAY NIGHT...East winds 10 to 20 kt becoming southeast 15 to
25 kt. Waves 1 to 3 ft building to 2 to 4 ft.
.TUESDAY...Southeast winds to 30 kt. Showers likely. Waves 4 to
6 ft occasionally to 8 ft building to 5 to 8 ft occasionally to
10 ft.
.WEDNESDAY...South winds to 30 kt becoming southwest. Chance of
showers. Waves 6 to 9 ft occasionally to 12 ft.

$$

LMZ761-130330-
MAFOR 1222/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11760 12750 12740 11730
11620 11510. Waves 6 to 10 feet subsiding to 3 to 6 feet tonight.
Waves 3 to 6 feet subsiding to 1 to 3 feet Saturday.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...13740 12730 11620 11510
11410. Waves 5 to 8 feet subsiding to 3 to 6 feet tonight. Waves
3 to 5 feet subsiding to 1 to 3 feet Saturday.

$$


Gertonson

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

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