Great Lakes Forecast
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FZUS63 KLOT 230738
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
238 AM CDT Sat Jun 23 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...Low pressure of 29.7 inches over the Indiana Ohio
state line will move to near Detroit this afternoon, and then
slowly east on Sunday. Meanwhile, a ridge of high pressure
averaging 30.0 inches stretched from the northern Great Lakes to
New England will become centered over Hudson Bay Sunday and
strengthen to 30.2 inches. A cold front will move south across the
region tonight and Sunday. The 30.2 inch high will spread over
the Great Lakes Monday, and then shift to New England by Tuesday
morning.

LMZ261-362-364-366-563-565-567-868-231530-
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-
238 AM CDT Sat Jun 23 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Northeast winds 10 to 15 kt becoming north 10 to 20.
Waves 1 to 3 ft.
.TONIGHT...Northeast winds 10 to 15 kt becoming north. Slight
chance of showers. Waves 1 to 3 ft.
.SUNDAY...North winds 10 to 15 kt. Waves 1 to 3 ft.
.SUNDAY NIGHT...North winds 10 to 15 kt becoming northeast. Waves
1 to 3 ft.
.MONDAY...East winds 10 to 15 kt becoming northeast. Waves 1 to
3 ft.
.MONDAY NIGHT...East winds 10 to 20 kt becoming southeast 15 to
25 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft
building to 4 to 6 ft occasionally to 8 ft.
.TUESDAY...Southeast winds 15 to 25 kt. Chance of showers and
thunderstorms. Waves 4 to 6 ft occasionally to 8 ft.
.WEDNESDAY...West winds 10 to 20 kt. Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-231530-
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-
238 AM CDT Sat Jun 23 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Northeast winds 10 to 15 kt becoming north 10 to 20 kt
this morning. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.TONIGHT...North winds 10 to 15 kt becoming northwest. Waves 1 to
3 ft.
.SUNDAY...North winds 10 to 15 kt. Waves 1 to 3 ft.
.SUNDAY NIGHT...Northeast winds 10 to 15 kt becoming east. Waves
1 to 3 ft.
.MONDAY...East winds 10 to 15 kt increasing to 10 to 20 kt. Waves
1 to 3 ft.
.MONDAY NIGHT...East winds 10 to 20 kt becoming southeast 15 to
25 kt. Showers and thunderstorms likely. Waves 2 to 4 ft building
to 4 to 6 ft occasionally to 8 ft.
.TUESDAY...Southeast winds 15 to 25 kt becoming south. Chance of
showers and thunderstorms. Waves 4 to 6 ft occasionally to 8 ft.
.WEDNESDAY...West winds 10 to 20 kt. Waves 2 to 4 ft.

$$

LMZ761-231530-
MAFOR 2309/
MICHIGAN NORTH 12110 11120 12820 12110 11810. Waves 1 to 3 ft.

MICHIGAN SOUTH 11110 13820 12810 11700 11710. Waves 2 to 4 ft
subsiding to 1 to 3 ft today. Waves 1 to 3 ft tonight.

$$


JEE

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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