000
FZUS63 KMKX 121356
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
856 AM 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...

Current low pressure of 28.9 inches over Ontario has begun to
intensify winds out of the northwest up to 20 knots. Wind gusts
will intensify to gales as the pressure gradient continues to
traverse across the lake, with the highest wind speeds expected on
the eastern shore and the northern third of the lake. Winds are
expected to fall below gale force by the evening going into
Saturday morning.

With the low pressure moving off, a building ridge over the
central US will move over the lake, shifting winds lighter and
more southerly through Saturday. A weak shortwave passing towards
the north will shift winds out of the north early Monday. For
this timeframe, winds will generally remain around 15 knots.

LMZ261-362-364-366-563-565-567-868-122130-
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-
856 AM CDT Fri Apr 12 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

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

.REST OF TODAY...Northwest winds to 30 kt increasing to gales to
45 kt. Chance of rain showers through mid morning. Waves 4 to
7 ft occasionally to 9 ft building to 8 to 12 ft occasionally to
16 ft.
.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 15 to 25 kt
late in the morning, then becoming southwest 10 to 20 kt early in
the afternoon becoming south late. Waves 4 to 6 ft occasionally
to 8 ft subsiding to 2 to 4 ft.
.SATURDAY NIGHT...South winds 10 to 20 kt. Rain showers likely.
Waves 3 to 5 ft.
.SUNDAY...Northwest winds 10 to 15 kt becoming north 10 to 20 kt.
Waves 2 to 4 ft.
.SUNDAY NIGHT...North winds 10 to 15 kt veering to south 5 to
10 kt. Waves 2 to 4 ft subsiding to 1 to 2 ft.
.MONDAY...South winds 10 to 15 kt. Waves 1 to 3 ft.
.TUESDAY...East winds to 30 kt. Rain showers likely. Waves 4 to
6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to
9 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-122130-
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-
856 AM CDT Fri Apr 12 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

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

.REST OF TODAY...Northwest winds to 30 kt increasing to gales to
40 kt late this morning, then becoming northwest gales to 40 kt
early this afternoon diminishing to gales to 35 kt late. Slight
chance of rain showers through mid morning. Waves 4 to 7 ft
occasionally to 9 ft building to 8 to 12 ft occasionally to
16 ft, then subsiding to 8 to 11 ft occasionally to 14 ft.
.TONIGHT...Northwest winds to 30 kt. Waves 6 to 9 ft occasionally
to 12 ft subsiding to 4 to 7 ft occasionally to 9 ft.
.SATURDAY...Northwest winds 15 to 25 kt backing to south 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 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. Waves 2 to 4 ft building to
3 to 5 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 20 kt becoming northeast 5 to
10 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.MONDAY...Southeast winds 10 to 15 kt. Waves 1 to 3 ft.
.TUESDAY...Southeast winds to 30 kt. Showers. Waves 4 to 6 ft
occasionally to 8 ft building to 5 to 8 ft occasionally to 10 ft.


$$

LMZ761-122130-
MAFOR 1216/
MICHIGAN NORTH...GALE WARNING IN EFFECT...13760 11750 13740
11730. Waves 6 to 9 feet building to 8 to 11 feet this afternoon.
Waves 7 to 10 feet subsiding to 3 to 5 feet tonight. Waves 3 to 5
feet subsiding to 2 to 4 feet Saturday morning.

MICHIGAN SOUTH...GALE WARNING IN EFFECT...13750 13740 11730
11720. Waves 7 to 11 feet this afternoon. Waves 5 to 9 feet
subsiding to 3 to 6 feet tonight. Waves 3 to 6 feet Saturday
morning.

$$


Gertonson

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

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