Great Lakes Forecast
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142
FZUS63 KLOT 132003
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
303 PM CDT Mon Aug 13 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 30.1 inches will drift to the Ohio
Valley tonight while weakening to 30.0 inches. An area of low
pressure of 29.6 inches will track east across Ontario and trail
a cold front across Lake Michigan Tuesday and Tuesday night. High
pressure of 30.0 inches will then build across the northern Great
Lakes on Wednesday as a 29.8 inch low pressure moves across the
middle Mississippi Valley. The low will track northeastward across
lower Michigan on Thursday.

LMZ261-362-364-366-563-565-567-868-140315-
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-
303 PM CDT Mon Aug 13 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Southwest winds 10 to 20 kt. Waves 1 to 3 ft.
.TUESDAY...Southwest winds 10 to 20 kt. Waves 1 to 3 ft.
.TUESDAY NIGHT...West winds 10 to 20 kt veering to northeast.
Waves 1 to 3 ft.
.WEDNESDAY...Northeast winds 10 to 20 kt. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...Northeast winds 10 to 20 kt becoming east.
Waves 1 to 3 ft.
.THURSDAY...Northeast winds 10 to 20 kt. Chance of showers and
thunderstorms. Waves 1 to 3 ft.
.THURSDAY NIGHT...Northeast winds 10 to 20 kt becoming north.
Waves 2 to 4 ft.
.FRIDAY...North winds 10 to 20 kt. Waves 2 to 4 ft.
.SATURDAY...North winds 10 to 15 kt becoming west. Waves 1 to
2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-140315-
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-
303 PM CDT Mon Aug 13 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...South winds 10 to 15 kt becoming southwest. Waves 1 to
2 ft.
.TUESDAY...West winds 10 to 15 kt becoming south 10 to 20 kt.
Waves 1 to 2 ft.
.TUESDAY NIGHT...South winds 10 to 15 kt becoming southwest.
Waves 1 to 2 ft.
.WEDNESDAY...South winds 10 to 15 kt becoming southeast 10 to
20 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...Southeast winds 10 to 20 kt. Chance of showers
and thunderstorms. Waves 1 to 3 ft.
.THURSDAY...East winds 10 to 20 kt backing to north. Chance of
showers and thunderstorms. Waves 1 to 3 ft.
.THURSDAY NIGHT...North winds 10 to 20 kt becoming northwest.
Waves 2 to 4 ft.
.FRIDAY...Northwest winds 10 to 20 kt becoming north. Waves 2 to
4 ft.
.SATURDAY...North winds 10 to 15 kt. Waves 1 to 2 ft.

$$

LMZ761-140315-
MAFOR 1321/
MICHIGAN NORTH 12510 13520 12510 11520. Waves 1 to 3 ft.

MICHIGAN SOUTH 12410 13510 11610 12510. Waves 1 to 2 ft.

$$

Lenning

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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