Great Lakes Forecast
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620
FZUS63 KMKX 231956
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
256 PM 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 of 30.4 inches will continue to drift across
Ontario and Quebec, Canada into Monday. Winds will increase this
evening into tonight out of the east to southeast, picking up a
bit on Monday. Expect building waves tonight, especially over the
northern and western portions of Lake Michigan.

LMZ261-362-364-366-563-565-567-868-240315-
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-
256 PM CDT Sun Sep 23 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...East winds 15 to 25 kt becoming southeast. Waves 2 to
4 ft building to 3 to 5 ft.
.MONDAY...Southeast winds 10 to 20 kt. Waves 2 to 4 ft.
.MONDAY NIGHT...Southeast winds 10 to 20 kt becoming southwest.
Chance of showers. Waves 2 to 4 ft.
.TUESDAY...Southwest winds 10 to 20 kt becoming west 10 to 15 kt.
Showers likely in the afternoon. Waves 1 to 3 ft.
.TUESDAY NIGHT...North winds 10 to 20 kt becoming northwest 15 to
25 kt. Chance of showers in the evening. 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 subsiding to 1 to 3 ft.
.WEDNESDAY NIGHT...West winds 10 to 20 kt becoming southwest.
Waves 2 to 4 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.
.FRIDAY...West winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-240315-
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-
256 PM CDT Sun Sep 23 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...East winds 10 to 15 kt becoming southeast 10 to 20 kt.
Waves 1 to 3 ft building to 2 to 4 ft.
.MONDAY...Southeast winds 10 to 20 kt. Slight chance of showers
in the afternoon. Waves 2 to 4 ft.
.MONDAY NIGHT...Southeast winds 10 to 20 kt becoming southwest.
Chance of showers. Waves 1 to 3 ft.
.TUESDAY...Southwest winds 10 to 15 kt becoming south. Chance of
showers in the afternoon. Waves 1 to 3 ft.
.TUESDAY NIGHT...Northwest winds 10 to 20 kt increasing to 15 to
25 kt. Showers likely in the evening, then chance of showers
overnight. Waves 2 to 4 ft building to 4 to 6 ft occasionally to
8 ft.
.WEDNESDAY...Northwest winds 15 to 25 kt becoming west 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft.
.WEDNESDAY NIGHT...West winds 10 to 15 kt becoming southwest
10 to 20 kt. Waves 1 to 3 ft.
.THURSDAY...Southwest winds to 30 kt. Waves 3 to 5 ft building to
4 to 7 ft occasionally to 9 ft.
.FRIDAY...Northwest winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 3 to 5 ft subsiding to 2 to 4 ft.

$$

LMZ761-240315-
MAFOR 2321/
MICHIGAN NORTH 13230 12330 13320. Waves 2 to 4 ft building to 4
to 6 ft occasionally to 8 ft tonight. Waves 3 to 5 ft subsiding
to 2 to 4 ft Monday.

MICHIGAN SOUTH 12210 11220 14320 11310. Waves 2 to 4 ft building
to 3 to 5 ft tonight. Waves 3 to 5 ft subsiding to 2 to 4 ft
Monday.

$$
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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