Great Lakes Forecast
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000
FZUS63 KMKX 231349
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
849 AM CDT Sun Sep 23 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 centered over the eastern Great Lakes will merge
with a stronger high pressure of 30.5 inches drifting across
Ontario and Quebec, Canada today into Monday. Winds will be on the
light side today into the afternoon, but will increase this
evening into tonight out of the east to southeast, easing a bit on
Monday. Expect building waves tonight, especially over the
northern and western portions of Lake Michigan.

LMZ261-362-364-366-563-565-567-868-232130-
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-
849 AM CDT Sun Sep 23 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Southwest winds 5 to 10 kt backing to southeast
10 to 15 kt early this afternoon, then becoming east 15 to 25 kt
late. Waves 1 to 3 ft building to 2 to 4 ft.
.TONIGHT...East winds 15 to 25 kt becoming southeast. Waves 4 to
6 ft occasionally to 8 ft.
.MONDAY...Southeast winds 15 to 25 kt becoming south 10 to 20 kt.
Waves 3 to 5 ft.
.MONDAY NIGHT...South winds 15 to 25 kt becoming southwest.
Chance of showers. Waves 3 to 5 ft.
.TUESDAY...Southwest winds 10 to 20 kt becoming northwest. Chance
of showers. Waves 2 to 4 ft.
.TUESDAY NIGHT...North winds 10 to 20 kt increasing to 15 to
25 kt. Chance of showers. Waves 2 to 4 ft building to 3 to 5 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt becoming west. Waves
3 to 5 ft.
.THURSDAY...Southwest winds to 30 kt. Chance of showers. Waves
4 to 6 ft occasionally to 8 ft building to 5 to 8 ft occasionally
to 10 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-232130-
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-
849 AM CDT Sun Sep 23 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...South winds 5 to 10 kt becoming east. Waves 1 ft
or less.
.TONIGHT...East winds 10 to 20 kt becoming southeast 15 to 25 kt.
Waves 1 to 3 ft building to 3 to 5 ft.
.MONDAY...Southeast winds 10 to 20 kt. Waves 3 to 5 ft subsiding
to 2 to 4 ft.
.MONDAY NIGHT...South winds 15 to 25 kt becoming southwest.
Chance of showers. Waves 3 to 5 ft.
.TUESDAY...Southwest winds 10 to 15 kt. Chance of showers in the
afternoon. Waves 2 to 4 ft.
.TUESDAY NIGHT...Northwest winds 10 to 20 kt increasing to 15 to
25 kt. Chance of showers. Waves 1 to 3 ft building to 3 to 5 ft.
.WEDNESDAY...Northwest winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft.
.THURSDAY...Southwest winds 15 to 25 kt increasing to 30 kt.
Waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.

$$

LMZ761-232130-
MAFOR 2315/
MICHIGAN NORTH 11500 11310 13230 13330. Waves 2 to 4 ft this
afternoon. Waves 3 to 5 ft building to 4 to 6 ft occasionally to
8 ft tonight. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3
to 5 ft Monday morning.

MICHIGAN SOUTH 12300 11210 11220 11320 12330 11320. Waves 1 ft or
less this afternoon. Waves 1 to 3 ft building to 3 to 5 ft
tonight. Waves 3 to 5 ft Monday morning.

$$
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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