196
FZUS63 KMKX 262002
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
302 PM CDT Thu Sep 26 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...

High pressure around 30.1 inches will shift to the east of the
region tonight into Friday. Strong low pressure less than 29.2
inches, from the remnants of Helene, will shift into the Ohio
River Valley Friday into Saturday, then slowly weaken into Sunday.
This will bring a tighter pressure gradient to far southern Lake
Michigan during most of this period.

This will result in stronger northeast winds and building waves,
and should see some gale force gusts in far southern portions of
Lake Michigan Friday afternoon and evening. A Gale Watch is in
effect.

High pressure around 30.3 inches should return for later Sunday
into the start of next week, with somewhat weaker northeast winds.

LMZ261-362-364-366-563-565-567-868-270330-
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-
302 PM CDT Thu Sep 26 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...South winds 5 to 10 kt becoming southeast. Waves 1 ft
or less.
.FRIDAY...Southeast winds 5 to 10 kt becoming east late in the
morning, then becoming northeast early in the afternoon
increasing to 10 to 20 kt late. Waves 1 to 2 ft building to 1 to
3 ft.
.FRIDAY NIGHT...Northeast winds 10 to 20 kt. Waves 2 to 4 ft.
.SATURDAY...Northeast winds 10 to 20 kt increasing to 15 to
25 kt. Waves 3 to 5 ft.
.SATURDAY NIGHT...Northeast winds 15 to 25 kt diminishing to
10 to 20 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.SUNDAY...Northeast winds 10 to 20 kt. Waves 2 to 4 ft.
.SUNDAY NIGHT...Northeast winds 10 to 20 kt becoming east 10 to
15 kt. Waves 2 to 4 ft.
.MONDAY...Southeast winds 10 to 15 kt becoming south 10 to 20 kt.
Waves 1 to 2 ft.
.TUESDAY...Northwest winds 15 to 25 kt. Chance of showers. Waves
4 to 6 ft occasionally to 8 ft.

$$

LMZ669-671-673-675-870-872-874-876-270330-
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 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-
302 PM CDT Thu Sep 26 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH TO WINTHROP HARBOR IL TO SOUTH
HAVEN MI...

.TONIGHT...Northeast winds 10 to 15 kt becoming east 10 to 20 kt.
Waves 1 to 3 ft.
.FRIDAY...Northeast winds 10 to 20 kt increasing to 30 kt. Waves
2 to 4 ft building to 4 to 7 ft occasionally to 9 ft.
.FRIDAY NIGHT...Northeast winds to 30 kt. Chance of showers
overnight. Waves 6 to 9 ft occasionally to 12 ft.
.SATURDAY...Northeast winds 15 to 25 kt. Chance of showers in the
morning. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
7 ft occasionally to 9 ft.
.SATURDAY NIGHT...Northeast winds 15 to 25 kt diminishing to
10 to 20 kt. Chance of showers. Waves 4 to 6 ft occasionally to
8 ft.
.SUNDAY...Northeast winds 10 to 20 kt becoming north. Waves 3 to
5 ft.
.SUNDAY NIGHT...Northeast winds 10 to 20 kt becoming east 10 to
15 kt. Waves 3 to 5 ft.
.MONDAY...East winds 10 to 15 kt becoming southeast 5 to 10 kt.
Waves 1 to 3 ft.
.TUESDAY...Northwest winds 15 to 25 kt becoming north. Waves 4 to
6 ft occasionally to 8 ft building to 4 to 7 ft occasionally to
9 ft.

$$

LMZ080-777-779-878-270330-
Lake Michigan from Michigan City IN to St. Joseph MI 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 St. Joseph to South Haven MI 5 NM offshore to
Mid Lake-
302 PM CDT Thu Sep 26 2024

WINTHROP HARBOR IL TO SOUTH HAVEN MI SOUTH...

...GALE WATCH IN EFFECT FROM FRIDAY AFTERNOON THROUGH LATE FRIDAY
NIGHT...

.TONIGHT...Northeast winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 2 to 4 ft.
.FRIDAY...Northeast winds 15 to 25 kt increasing to gales to
35 kt. Waves 3 to 5 ft building to 6 to 9 ft occasionally to
12 ft.
.FRIDAY NIGHT...Northeast gales to 35 kt diminishing to 30 kt.
Chance of showers overnight. Waves 7 to 10 ft occasionally to 13
ft.
.SATURDAY...Northeast winds 15 to 25 kt. Chance of showers. Waves
5 to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft
occasionally to 9 ft.
.SATURDAY NIGHT...Northeast winds 15 to 25 kt diminishing to
10 to 20 kt. Chance of showers. Waves 4 to 6 ft occasionally to
8 ft.
.SUNDAY...Northeast winds 10 to 20 kt. Chance of showers. Waves
3 to 5 ft.
.SUNDAY NIGHT...Northeast winds 10 to 20 kt becoming east 10 to
15 kt. Waves 3 to 5 ft.
.MONDAY...East winds 5 to 10 kt becoming northeast. Waves 1 to
3 ft.
.TUESDAY...Northwest winds 10 to 20 kt becoming north 15 to
25 kt. Waves 4 to 6 ft occasionally to 8 ft building to 4 to 7 ft
occasionally to 9 ft.

$$

LMZ761-270330-
MAFOR 2622/
MICHIGAN NORTH 11500 11400 14300 11210 11120. Waves 2 feet or
less.

MICHIGAN SOUTH 12110 11120 11220 12130 11140 11150. Waves 1 to 3
feet tonight. Waves 2 to 4 feet building to 5 to 8 feet Friday.

$$
Wood

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

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