Great Lakes Forecast
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000
FZUS63 KLOT 160144
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
844 PM 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...Broad low pressure of 29.8 inches centered over
northern Missouri will move slowly across the middle Mississippi
Valley tonight. The low will track across far southern Lake
Michigan Thursday afternoon and continue to the eastern Great
Lakes 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 through the
weekend.

LMZ261-362-364-366-563-565-567-868-160800-
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-
844 PM CDT Wed Aug 15 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Northeast winds 10 to 15 kt becoming east.
Waves 1 to 3 ft.
.THURSDAY...East winds 10 to 15 kt becoming northeast 10 to 20
kt. Slight chance of showers in the afternoon. Waves 1 to 3 ft.
.THURSDAY NIGHT...Northeast winds 10 to 20 kt becoming north.
Waves 1 to 3 ft.
.FRIDAY...North winds 10 to 20 kt. Waves 1 to 3 ft.
.FRIDAY NIGHT...North winds 10 to 20 kt becoming northeast.
Waves 1 to 3 ft.
.SATURDAY...Northeast winds 10 to 15 kt diminishing to 5 to 10
kt. Waves 1 to 3 ft.
.SATURDAY NIGHT...East winds 5 to 10 kt becoming southeast.
Waves 1 to 2 ft.
.SUNDAY...Southwest winds 5 to 10 kt. Waves 1 ft or less.
.MONDAY...South winds 10 to 15 kt becoming east 15 to 25 kt
Monday Night. Chance of showers and thunderstorms. Waves 1 to
3 ft building to 3 to 5 ft Monday Night.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-160800-
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-
844 PM CDT Wed Aug 15 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Southeast winds 10 to 20 kt diminishing to
10 to 15 kt. Slight chance of showers and thunderstorms. Waves 2
to 4 ft.
.THURSDAY...Southeast winds 10 to 15 kt backing to north. Slight
chance of showers and thunderstorms. Waves 1 to 3 ft.
.THURSDAY NIGHT...North winds 10 to 15 kt increasing to 10 to 20
kt. Chance of showers. Waves 1 to 3 ft.
.FRIDAY...North winds 10 to 20 kt. Waves 2 to 4 ft.
.FRIDAY NIGHT...North winds 10 to 20 kt becoming northeast 10 to
15 kt. Waves 2 to 4 ft.
.SATURDAY...Northeast winds 10 to 15 kt becoming north 5 to 10
kt. Waves 1 to 3 ft.
.SATURDAY NIGHT...North winds 5 to 10 kt becoming northeast.
Waves 1 to 2 ft.
.SUNDAY...East winds 5 to 10 kt becoming south. Waves 1 ft or
less.
.MONDAY...Southeast winds 10 to 20 kt increasing to 15 to 25 kt.
Chance of showers and thunderstorms. Waves building to 3 to 5 ft.

$$

LMZ761-160800-
MAFOR 1603/
MICHIGAN NORTH 11110 14210 13120. Waves 1 to 3 ft.

MICHIGAN SOUTH 12320 12310 11200 13810. Waves 2 to 4 ft tonight.
Waves 1 to 3 ft Thursday and Thursday evening.

$$

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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