Great Lakes Forecast
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643
FZUS63 KMKX 240143
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
843 PM CDT Mon Sep 23 2019

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...

Weak high pressure of 30.1 inches will push through the Ohio River
Valley tonight and Tuesday.

Breezy south to southwest winds will return to the lake later
Tuesday into Tuesday night, as low pressure of 29.3 inches
develops in eastern Minnesota. A strong cold front will move
across the lake Wednesday morning, with brisk west winds
developing behind it, especially over the northern half. Brisk
southwest winds with gusts to 30 knots are expected ahead of the
passing cold front as well.

&&

LMZ261-362-364-366-563-565-567-868-240915-
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-
843 PM CDT Mon Sep 23 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...West winds 10 to 20 kt becoming southwest.
Waves 1 to 3 ft.
.TUESDAY...Southwest winds 10 to 15 kt increasing to 10 to 20 kt
early in the afternoon, then becoming south 15 to 25 kt late.
Waves 1 to 3 ft building to 2 to 4 ft.
.TUESDAY NIGHT...South winds 15 to 25 kt becoming southwest to
30 kt. Showers likely with a chance of thunderstorms overnight.
Waves 4 to 6 ft occasionally to 8 ft building to 6 to 9 ft
occasionally to 12 ft.
.WEDNESDAY...West winds to 30 kt diminishing to 15 to 25 kt.
Chance of showers and thunderstorms in the morning, then chance
of showers in the afternoon. Waves 6 to 9 ft occasionally to
12 ft.
.WEDNESDAY NIGHT...West winds 10 to 20 kt. Waves 3 to 5 ft.
.THURSDAY...West winds 10 to 20 kt. Waves 3 to 5 ft.
.THURSDAY NIGHT...Southwest winds 10 to 20 kt becoming south to
30 kt. Showers likely with a chance of thunderstorms. Waves 2 to
4 ft building to 3 to 5 ft.
.FRIDAY...South winds to 30 kt becoming southwest. Showers likely
with a chance of thunderstorms. Waves 6 to 9 ft occasionally to
12 ft.
.SATURDAY...North winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-240915-
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-
843 PM CDT Mon Sep 23 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...West winds 10 to 20 kt. Waves 2 to 4 ft.
.TUESDAY...West winds 10 to 20 kt becoming south 15 to 25 kt.
Waves 2 to 4 ft building to 3 to 5 ft.
.TUESDAY NIGHT...South winds 15 to 25 kt becoming southwest gales
to 35 kt, then diminishing to 30 kt late. Waves 4 to 6 ft
occasionally to 8 ft building to 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY...Southwest winds to 30 kt becoming west 15 to 25 kt.
Chance of showers. Waves 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY NIGHT...West winds 10 to 20 kt becoming northwest
15 to 25 kt. Waves 4 to 6 ft occasionally to 8 ft.
.THURSDAY...Northwest winds 15 to 25 kt becoming west 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft.
.THURSDAY NIGHT...Southwest winds 10 to 20 kt becoming south to
30 kt. Chance of showers and thunderstorms. Waves 2 to 4 ft
building to 3 to 5 ft.
.FRIDAY...South winds to 30 kt becoming southwest. Chance of
showers and thunderstorms. Waves 6 to 9 ft occasionally to 12 ft.
.SATURDAY...North winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 2 to 4 ft.

$$

LMZ761-240915-
MAFOR 2403/
MICHIGAN NORTH 11600 13500 11510 11410 12420. Waves 2 feet or
less overnight. Waves 2 feet or less building to 2 to 4 feet
Tuesday. Waves 3 to 5 feet Tuesday evening.

MICHIGAN SOUTH 12610 11600 13510 12420. Waves 1 to 3 feet
overnight. Waves 1 to 3 feet building to 2 to 4 feet Tuesday.
Waves 3 to 5 feet Tuesday evening.

$$


Davis

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

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



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