Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 150744
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
244 AM CDT Wed Aug 15 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...A 29.7 inch low will move from the Central Plains this
morning across the middle Mississippi Valley this evening. The low
will track northeastward across far southern Lake Michigan
Thursday afternoon and continue to Lake Ontario by Friday
afternoon. Meanwhile, high pressure of 30.2 inches will move from
northern Manitoba Thursday to James Bay Friday and continue east
across northern Quebec into the weekend.

LMZ261-362-364-366-563-565-567-868-151515-
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-
244 AM CDT Wed Aug 15 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Northeast winds 10 to 15 kt becoming east. Slight chance
of showers this morning. Waves 1 to 3 ft.
.TONIGHT...East winds 10 to 15 kt. Waves 1 to 3 ft.
.THURSDAY...East winds 5 to 10 kt becoming northeast 10 to 15 kt.
Waves 1 to 3 ft.
.THURSDAY NIGHT...Northeast winds 10 to 15 kt becoming north.
Waves 1 to 3 ft.
.FRIDAY...North winds 10 to 15 kt. Waves 1 to 2 ft.
.FRIDAY NIGHT...North winds 10 to 15 kt becoming northeast. Waves
1 to 2 ft.
.SATURDAY...Northeast winds 5 to 10 kt. Waves 1 to 2 ft.
.SUNDAY...Southwest winds 5 to 10 kt. Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-151515-
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-
244 AM CDT Wed Aug 15 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Southwest winds 10 to 15 kt becoming south and increasing
to 10 to 20 kt...then backing to southeast late this afternoon.
Chance of showers and slight chance of thunderstorms this
afternoon. Waves 1 to 3 ft building to 2 to 4 ft.
.TONIGHT...South winds 10 to 20 kt becoming southeast 10 to
15 kt. Chance of showers and slight chance of thunderstorms in
the evening, then slight chance of showers and thunderstorms
overnight. Waves subsiding to 1 to 3 ft.
.THURSDAY...East winds 10 to 15 kt backing to north. Chance of
showers in the morning. Waves 1 to 3 ft.
.THURSDAY NIGHT...North winds 10 to 15 kt. Waves 1 to 3 ft.
.FRIDAY...North winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 2 to 4 ft.
.FRIDAY NIGHT...North winds 10 to 15 kt becoming northeast. Waves
1 to 3 ft.
.SATURDAY...Northeast winds 10 to 15 kt becoming north 5 to
10 kt. Waves 1 to 3 ft.
.SUNDAY...Southeast winds 5 to 10 kt becoming south. Waves 1 ft
or less.

$$

LMZ761-151515-
MAFOR 1509/
MICHIGAN NORTH 14110 14210. Waves 1 to 3 ft .

MICHIGAN SOUTH 11510 12410 11420 14320. Chance of showers today.
Chance of showers this evening. Waves 1 to 3 ft building to 2 to 4
ft today. Waves subsiding to 1 to 3 ft tonight.

$$

BMD

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

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

NOTICE - Starting Wednesday September 5th 2018 this product will
be issued by NWS Milwaukee. For additional information:

https://www.weather.gov/media/notification/pdfs/scn18-64lake_michigan_transfer.pdf
Or Contact: Ed Fenelon at Edward.Fenelon@noaa.gov or Ben Schott
at Ben.Schott@noaa.gov



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