Great Lakes Forecast
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000
FZUS63 KLOT 091943
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
243 PM CDT Wed Aug 9 2017

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 30.3 inches centered over the
Maryland panhandle will move east off the Mid Atlantic coast
tonight. Meanwhile, low pressure of 29.9 inches over the eastern
Dakotas will move across northern Wisconsin on Thursday, and
northern Lake Michigan Thursday night. A 30.1 inch high will then
build over the Upper Midwest on Saturday, before spreading across
the Great Lakes region early next week.

LMZ261-362-364-366-563-565-567-868-092100-
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-
243 PM CDT Wed Aug 9 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Southwest winds 10 to 15 kt becoming south 10 to 20 kt.
Waves 1 to 3 ft.
.TONIGHT...South winds 10 to 20 kt diminishing to 10 to 15 kt.
Slight chance of showers overnight. Waves 1 to 3 ft.
.THURSDAY...South winds 10 to 20 kt increasing to 15 to 25 kt.
Chance of showers in the morning...then showers likely with a
chance of thunderstorms in the afternoon. Waves 2 to 4 ft
building to 3 to 5 ft.
.THURSDAY NIGHT...South winds 10 to 20 kt becoming west 10 to
15 kt. Showers and thunderstorms likely in the evening...then
chance of showers overnight. Waves 3 to 5 ft subsiding to 2 to
4 ft.
.FRIDAY...Northwest winds 10 to 15 kt increasing to 10 to 20 kt.
Chance of showers in the morning. Waves 1 to 3 ft.
.FRIDAY NIGHT...North winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 3 to 5 ft.
.SATURDAY...North winds 10 to 20 kt becoming northwest. Waves
3 to 5 ft.
.SUNDAY...North winds 10 to 15 kt becoming northwest. Waves 1 ft
or less.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-092100-
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-
243 PM CDT Wed Aug 9 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...West winds 10 to 15 kt backing to south 10 to 20 kt.
Waves 1 to 3 ft.
.TONIGHT...Southeast winds 10 to 20 kt becoming south 10 to
15 kt. Waves 1 to 3 ft.
.THURSDAY...South winds 10 to 20 kt. Chance of showers and
thunderstorms in the afternoon. Waves 1 to 3 ft building to 3 to
5 ft.
.THURSDAY NIGHT...Southwest winds 10 to 20 kt becoming west.
Showers and thunderstorms likely in the evening...then chance of
showers overnight. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.FRIDAY...Northwest winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.FRIDAY NIGHT...North winds 10 to 20 kt. Waves 1 to 3 ft building
to 3 to 5 ft.
.SATURDAY...North winds 10 to 20 kt. Waves 3 to 5 ft.
.SUNDAY...Northeast winds 10 to 15 kt becoming north. Waves 1 to
2 ft.

$$

LMZ761-092100-
MAFOR 0909/
MICHIGAN NORTH 11710 12510 14410 11410. Waves 1 to 3 feet.

MICHIGAN SOUTH 12610 11510 12410 11310 12410. Waves 1 to 3 feet.

$$

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

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



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