Great Lakes Forecast
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FZUS63 KLOT 170743
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
243 AM CDT Sun Sep 17 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...Low pressure of 29.8 inches is over Lake Superior this
morning and will lift to Hudson Bay early Monday. High pressure
of 30.2 inches over the northern Great Plains this morning will
move to Lake Superior and northern Lake Michigan Monday. Another
low of 29.5 inches will meander over the northern Great Plains and
Canadian Prairies Tuesday through Thursday. Low pressure will
consolidate over the central Great Plains Friday and lift to
Hudson Bay Saturday.

LMZ261-362-364-366-563-565-567-868-171515-
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 AM CDT Sun Sep 17 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...South winds 15 to 20 kt becoming northwest 10 to 20 kt by
late this afternoon. Chance of showers and thunderstorms this
morning...then slight chance of showers and thunderstorms this
afternoon. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.TONIGHT...Northeast winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 2 to 4 ft.
.MONDAY...Northeast winds 10 to 20 kt. Waves 2 to 4 ft.
.MONDAY NIGHT...Northeast winds 10 to 20 kt becoming east. Chance
of showers. Waves 1 to 3 ft.
.TUESDAY...East winds 10 to 20 kt. Waves 1 to 3 ft.
.TUESDAY NIGHT...East winds 10 to 20 kt becoming southeast. Waves
1 to 3 ft.
.WEDNESDAY...Southeast winds 10 to 20 kt becoming south. Waves
1 to 3 ft.
.THURSDAY...East winds 10 to 15 kt. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-171515-
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 AM CDT Sun Sep 17 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...South winds 10 to 20 kt veering to north 10 to 15 kt.
Slight chance of showers and thunderstorms. Waves 2 to 4 ft
subsiding to 1 to 3 ft.
.TONIGHT...North winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft building to 2 to 4 ft.
.MONDAY...Northeast winds 10 to 20 kt. Chance of showers and
thunderstorms in the afternoon. Waves 2 to 4 ft.
.MONDAY NIGHT...East winds 10 to 20 kt becoming southeast. Chance
of showers and thunderstorms in the evening...then chance of
showers overnight. Waves 2 to 4 ft.
.TUESDAY...East winds 10 to 15 kt. Waves 1 to 3 ft.
.TUESDAY NIGHT...East winds 10 to 15 kt becoming southeast 10 to
20 kt. Waves 1 to 3 ft.
.WEDNESDAY...Southeast winds 10 to 20 kt becoming south. Waves
1 to 3 ft.
.THURSDAY...Southeast winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 1 to 3 ft.

$$

LMZ761-171515-
MAFOR 1709/
MICHIGAN NORTH 11420 13520 11720 12120 11130. Chance of showers
and thunderstorms this morning. Waves 3 to 5 feet subsiding to 2
to 4 feet today. Waves 2 to 4 feet tonight.


MICHIGAN SOUTH 11420 11510 11610 11710 13810 11820. Waves 2 to 4
feet subsiding to 1 to 3 feet today. Waves 1 to 3 feet building to
2 to 4 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



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