512
FZUS63 KMKX 200806
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
306 AM CDT Fri Sep 20 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 29.3 inches centered over Manitoba will
gradually lift into the Hudson Bay today. This low to the north
will drag a weak cold front across Lake Michigan through this
evening where southerly winds today will turn more westerly
overnight into Saturday. Will see a broad area of high pressure
build in behind the front for Saturday before winds turn back to
the south and pick up ahead of another low pressure. Expect this
low to lift across Manitoba/Ontario and deepen to around 29.5
inches overnight Saturday into Sunday dragging another cold front
across Lake Michigan. Will once again see southerly winds turn
more west-northwesterly behind the front during the day Sunday.
Northerly winds will continue into the the start of next week as
high pressure around 30.0 inches builds across the Upper Great
Lakes region.

LMZ261-362-364-366-563-565-567-868-201530-
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-
306 AM CDT Fri Sep 20 2024

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...South winds 10 to 20 kt. Chance of showers and
thunderstorms. Waves 2 to 4 ft.
.TONIGHT...South winds 10 to 15 kt veering to west 5 to 10 kt.
Patchy fog overnight. Waves 2 to 4 ft subsiding to 1 to 2 ft.
.SATURDAY...Northwest winds 5 to 10 kt backing to south 10 to
15 kt. Waves 1 to 2 ft.
.SATURDAY NIGHT...South winds 10 to 15 kt. Waves 1 to 2 ft.
.SUNDAY...West winds 10 to 15 kt becoming north 10 to 20 kt.
Chance of showers in the morning, then showers likely in the
afternoon. Waves 1 to 3 ft.
.SUNDAY NIGHT...North winds 10 to 20 kt. Chance of showers. Waves
3 to 5 ft.
.MONDAY...North winds 10 to 20 kt. Chance of showers. Waves 3 to
5 ft.
.TUESDAY...Northeast winds 10 to 15 kt becoming north 10 to
20 kt. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-201530-
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-
306 AM CDT Fri Sep 20 2024

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...South winds 10 to 20 kt diminishing to 10 to 15 kt.
Chance of showers and thunderstorms. Waves 2 to 4 ft.
.TONIGHT...South winds 5 to 10 kt veering to northwest. Waves
1 to 3 ft subsiding to 1 to 2 ft.
.SATURDAY...Northwest winds 5 to 10 kt backing to southeast 10 to
15 kt. Waves 1 to 2 ft.
.SATURDAY NIGHT...Southeast winds 10 to 15 kt becoming south.
Waves 1 to 2 ft.
.SUNDAY...Southwest winds 10 to 15 kt veering to northwest 10 to
20 kt. Chance of showers in the morning, then showers likely in
the afternoon. Waves 1 to 3 ft.
.SUNDAY NIGHT...North winds 10 to 20 kt. Showers likely. Waves
3 to 5 ft.
.MONDAY...North winds 10 to 20 kt. Chance of showers. Waves 3 to
5 ft.
.TUESDAY...Northeast winds 10 to 20 kt becoming north. Waves 2 to
4 ft.

$$

LMZ761-201530-
MAFOR 2010/
MICHIGAN NORTH 14420 11410 12510 11600. A chance of showers, then
a chance of showers and thunderstorms early this morning. Waves 1
to 3 feet.

MICHIGAN SOUTH 12420 11520 12410 11500 12600. A chance of
showers, then a chance of showers and thunderstorms early this
morning. Waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet today. Waves 1 to 3 feet subsiding to 1
foot or less tonight.

$$


Wagner

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

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