086
FZUS63 KMKX 300739
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
239 AM CDT Mon Sep 30 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...

Low pressure around 29.4 inches over the Canadian Prairies will
progress toward Hudson Bay as it deepens to 29.0 inches today.
The low is forecast to linger over Hudson Bay on Tuesday, dragging
a cold front across Lake Michigan during the morning hours
Tuesday.

Scattered showers are expected over the northern two-thirds of
Lake Michigan along and ahead of the advancing front. Gusty
northwest winds will quickly become established behind the front
on Tuesday. Gales are not expected at this time, though winds to
around 30 knots are likely over the southern third of the lake.

High pressure of 30.1 inches will then push through the central
Plains and lower Missouri Valley Tuesday, before moving into the
Mid Atlantic on Wednesday. Winds will turn more southerly
Wednesday in response, with increasing gusts over the northern
half of the lake. Another front is then expected Thursday into
Friday, with northerly winds expected behind the front.

LMZ261-362-364-366-563-565-567-868-301515-
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-
239 AM CDT Mon Sep 30 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Southeast winds 10 to 15 kt becoming south. Waves 1 to
3 ft.
.TONIGHT...South winds 10 to 15 kt increasing to 10 to 20 kt late
in the evening, then becoming south 10 to 20 kt after midnight
becoming southwest 15 to 25 kt late. Chance of showers overnight.
Waves 1 to 3 ft building to 3 to 5 ft.
.TUESDAY...Northwest winds 15 to 25 kt. Chance of showers in the
morning. Waves 4 to 6 ft occasionally to 8 ft building to 5 to
8 ft occasionally to 10 ft, then subsiding to 4 to 6 ft
occasionally to 8 ft.
.TUESDAY NIGHT...Northwest winds 15 to 25 kt diminishing to 10 to
15 kt overnight. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt increasing to 30 kt in
the afternoon. Waves 1 to 3 ft building to 4 to 7 ft occasionally
to 9 ft.
.WEDNESDAY NIGHT...Southwest winds to 30 kt. Waves 5 to 8 ft
occasionally to 10 ft.
.THURSDAY...West winds 10 to 20 kt. Waves 4 to 6 ft occasionally
to 8 ft subsiding to 2 to 4 ft.
.FRIDAY...North winds 10 to 20 kt becoming northwest. Waves 1 to
3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-301515-
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-
239 AM CDT Mon Sep 30 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...East winds 10 to 15 kt becoming southeast 5 to 10 kt.
Waves 2 to 4 ft subsiding to 1 to 2 ft.
.TONIGHT...Southeast winds 10 to 15 kt becoming southwest 10 to
20 kt. Waves 1 to 3 ft building to 2 to 4 ft.
.TUESDAY...Northwest winds 15 to 25 kt becoming north to 30 kt.
Waves 4 to 6 ft occasionally to 8 ft building to 6 to 9 ft
occasionally to 12 ft.
.TUESDAY NIGHT...Northwest winds 15 to 25 kt becoming north 10 to
15 kt overnight. Waves 5 to 8 ft occasionally to 10 ft subsiding
to 4 to 6 ft occasionally to 8 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt increasing to 15 to
25 kt. Waves 2 to 4 ft building to 3 to 5 ft.
.WEDNESDAY NIGHT...Southwest winds 15 to 25 kt. Waves 4 to 7 ft
occasionally to 9 ft.
.THURSDAY...Southwest winds 10 to 20 kt. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft.
.FRIDAY...North winds 10 to 20 kt. Waves 2 to 4 ft.

$$

LMZ761-301515-
MAFOR 3010/
MICHIGAN NORTH 11210 12310 13410 11420 11520. A chance of showers
overnight. Waves 2 feet or less today. Waves 1 to 3 feet building
to 2 to 4 feet tonight.

MICHIGAN SOUTH 12210 12200 11300 12410 11520. Waves 2 to 4 feet
subsiding to 1 foot or less today. Waves 1 to 3 feet tonight.

$$


Boxell

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

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