064
FZUS63 KMKX 011358
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
858 AM CDT Tue Oct 1 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...

A cold front is pass through the region this morning exiting the
southern half of the lake over the next couple hours. Gusty
northwest winds are expected along and behind the front. Gusts
will occasionally approach gale thresholds over the southern open
waters of Lake Michigan through early afternoon, with an isolated
gust above gale force possible. Will monitor trends through this
morning, though the anticipated isolated nature of any gale-force
gusts precludes the need for any Gale Warnings at this time.

30.4 inch high pressure will become established over the central
Great Plains this afternoon, weakening to 30.0 inches as it
drifts into the Ohio River Valley on Wednesday. An area of 29.6
inch low pressure will simultaneously develop and track along the
United States-Canada border, reaching Lake Superior by Wednesday
evening. This evolution will allow for winds to shift out of the
southwest on Wednesday afternoon. Gusts will approach gale
thresholds over the northern third of the open waters during this
time period. Gale Warnings are not currently anticipated, but
trends will be closely monitored through today.

LMZ261-362-364-366-563-565-567-868-012115-
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-
858 AM CDT Tue Oct 1 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Northwest winds to 30 kt diminishing to 15 to
25 kt. Slight chance of showers through mid morning. Waves 4 to
7 ft occasionally to 9 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.TONIGHT...Northwest winds 10 to 20 kt becoming north late in the
evening, then becoming northwest 10 to 15 kt after midnight
becoming west 5 to 10 kt late. Waves 2 to 4 ft subsiding to 1 to
3 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt increasing to 30 kt.
Waves 1 to 3 ft building to 7 to 10 ft occasionally to 13 ft.
.WEDNESDAY NIGHT...Southwest winds to 30 kt. Waves 8 to 11 ft
occasionally to 14 ft subsiding to 6 to 9 ft occasionally to
12 ft.
.THURSDAY...West winds 10 to 20 kt. Waves 4 to 6 ft occasionally
to 8 ft subsiding to 2 to 4 ft.
.THURSDAY NIGHT...Northwest winds 10 to 15 kt becoming north.
Waves 1 to 2 ft.
.FRIDAY...North winds 10 to 15 kt becoming northwest. Waves 1 to
3 ft.
.SATURDAY...Southwest winds 10 to 20 kt becoming south 15 to
25 kt. Waves 1 to 3 ft building to 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-012115-
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-
858 AM CDT Tue Oct 1 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Northwest winds to 30 kt diminishing to 15 to
25 kt. Waves 4 to 7 ft occasionally to 9 ft building to 6 to 9 ft
occasionally to 12 ft.
.TONIGHT...Northwest winds 15 to 25 kt becoming north 10 to
15 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 2 to
4 ft.
.WEDNESDAY...Southwest winds 10 to 15 kt increasing to 30 kt.
Waves 1 to 3 ft building to 4 to 6 ft occasionally to 8 ft.
.WEDNESDAY NIGHT...Southwest winds to 30 kt diminishing to 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.
.THURSDAY NIGHT...East winds 5 to 10 kt becoming north 10 to
15 kt. Waves 1 to 3 ft.
.FRIDAY...Northeast winds 10 to 15 kt becoming north 10 to 20 kt.
Waves 2 to 4 ft.
.SATURDAY...Southeast winds 10 to 20 kt becoming south 15 to
25 kt. Waves 1 to 3 ft building to 3 to 5 ft.

$$

LMZ761-012115-
MAFOR 0116/
MICHIGAN NORTH 13730 11820 11810 11700 11510 11530. Waves 4 to 7
feet subsiding to 3 to 6 feet this afternoon. Waves 2 to 4 feet
subsiding to 1 to 3 feet tonight. Waves 2 feet or less building
to 2 to 4 feet Wednesday morning.

MICHIGAN SOUTH 11840 12730 11820 12810 11700 11510. Waves 5 to 9
feet this afternoon. Waves 4 to 7 feet subsiding to 2 to 4 feet
tonight. Waves 1 to 3 feet Wednesday morning.

$$


Patterson

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

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