Great Lakes Forecast
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000
FZUS63 KMKX 220428
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
1128 PM CDT Fri Sep 21 2018

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 of 30.33 inches centered over Minneapolis will
drift across the central Great Lakes Saturday into Saturday night.
Meanwhile, a weak trough of low pressure settle over Lake
Superior. This will result in a steady south to southwest wind
over the far northern portion of Lake Michigan, while the south
will be in a much weaker wind flow regime.

On Sunday, an additional area of high pressure of 30.5 inches
will slide across Ontario and Quebec with an easterly flow over
Lake Michigan.

LMZ261-362-364-366-563-565-567-868-220915-
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-
1128 PM CDT Fri Sep 21 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...North winds to 30 kt diminishing to 10 to
15 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 3 to
5 ft.
.SATURDAY...Northwest winds 10 to 15 kt backing to southwest
10 to 20 kt. Waves 2 to 4 ft building to 3 to 5 ft.
.SATURDAY NIGHT...Southwest winds 10 to 20 kt becoming west 10 to
15 kt. Waves 3 to 5 ft.
.SUNDAY...North winds 10 to 20 kt veering to east. Waves 2 to
4 ft building to 3 to 5 ft.
.SUNDAY NIGHT...Southeast winds 10 to 20 kt increasing to 15 to
25 kt. Waves 4 to 6 ft occasionally to 8 ft.
.MONDAY...Southeast winds 15 to 25 kt becoming south. Waves 3 to
5 ft.
.MONDAY NIGHT...South winds 15 to 25 kt. Chance of showers. Waves
3 to 5 ft.
.TUESDAY...Southwest winds 15 to 25 kt becoming northwest 10 to
20 kt. Chance of showers. Waves 3 to 5 ft.
.WEDNESDAY...West winds 10 to 20 kt. Waves 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-220915-
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-
1128 PM CDT Fri Sep 21 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...North winds 15 to 25 kt becoming northeast
10 to 20 kt. Waves 6 to 9 ft occasionally to 12 ft.
.SATURDAY...Northeast winds 10 to 20 kt becoming east 10 to 15 kt
late in the morning, then becoming southeast 5 to 10 kt early in
the afternoon increasing to 10 to 15 kt late. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 1 to 3 ft.
.SATURDAY NIGHT...Southeast winds 5 to 10 kt becoming southwest.
Waves 1 to 2 ft.
.SUNDAY...South winds 5 to 10 kt becoming east. Waves 1 ft or
less.
.SUNDAY NIGHT...East winds 10 to 20 kt becoming southeast. Waves
2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
.MONDAY...Southeast winds 10 to 20 kt. Waves 3 to 5 ft.
.MONDAY NIGHT...South winds 10 to 20 kt. Chance of showers. Waves
3 to 5 ft.
.TUESDAY...Southwest winds 10 to 20 kt becoming west. Chance of
showers. Waves 3 to 5 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt. Waves 3 to 5 ft.

$$

LMZ761-220915-
MAFOR 2203/
MICHIGAN NORTH...GALE WARNING IN EFFECT...11840 12820 11710
14520. Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 6
ft occasionally to 8 ft overnight. Waves 3 to 5 ft Saturday and
Saturday evening.

MICHIGAN SOUTH 11830 11820 13120 12310 11300. Waves 6 to 9 ft
occasionally to 12 ft overnight. Waves 4 to 7 ft occasionally to 9
ft subsiding to 2 to 4 ft Saturday. Waves 1 to 3 ft Saturday
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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