Great Lakes Forecast
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850
FZUS63 KLOT 240742
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
242 AM CDT Thu May 24 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 30.2 inches is over lower Michigan
early this morning. The high will shift to the upper Ohio Valley
today then to the mid Atlantic Coast tonight. Low pressure of 29.5
inches will move from Manitoba Thursday night into the Upper
Midwest Saturday then to Lake Michigan Sunday at 29.8 inches. A
30.0 inch high will build into the western Great Lakes Monday and
Tuesday.

LMZ261-362-364-366-563-565-567-868-241515-
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-
242 AM CDT Thu May 24 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...

.TODAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Patchy dense fog this morning, then patchy fog this afternoon.
Waves 2 to 4 ft.
.TONIGHT...South winds 10 to 20 kt increasing to 15 to 25 kt.
Slight chance of showers overnight. Waves 3 to 5 ft.
.FRIDAY...South winds 20 to 25 kt. Chance of showers and
thunderstorms in the afternoon. Waves 4 to 6 ft occasionally to 8
ft.
.FRIDAY NIGHT...Southwest winds 15 to 25 kt diminishing to 10 to
20 kt. Chance of showers and thunderstorms. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft.
.SATURDAY...Southwest winds 5 to 10 kt becoming south. Chance of
showers and thunderstorms in the afternoon. Waves 1 to 3 ft
subsiding to 1 to 2 ft.
.SATURDAY NIGHT...Southeast winds 5 to 10 kt. Chance of showers
and thunderstorms. Waves 1 to 2 ft.
.SUNDAY...Southeast winds 5 to 10 kt. Waves 1 ft or less.
.MONDAY...North winds 5 to 10 kt increasing to 10 to 15 kt. Waves
1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-241515-
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-
242 AM CDT Thu May 24 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM CDT THIS MORNING...

.TODAY...South winds 5 to 10 kt increasing to 10 to 15 kt. Patchy
dense fog this morning, then patchy fog this afternoon. Waves 1
to 3 ft.
.TONIGHT...South winds 10 to 20 kt. Waves 2 to 4 ft.
.FRIDAY...South winds 10 to 20 kt. Waves 2 to 4 ft.
.FRIDAY NIGHT...South winds 10 to 20 kt becoming southwest 10 to
15 kt. Chance of showers and thunderstorms. Waves 2 to 4 ft
subsiding to 1 to 3 ft.
.SATURDAY...Southwest winds 10 to 15 kt becoming south. Waves
1 to 2 ft.
.SATURDAY NIGHT...South winds 5 to 10 kt. Waves 1 ft or less.
.SUNDAY...Southwest winds 5 to 10 kt becoming south. Waves 1 ft
or less.
.MONDAY...Northwest winds 10 to 15 kt becoming north. Waves 1 to
2 ft.

$$

LMZ761-241515-
MAFOR 2409/
MICHIGAN NORTH 12414 13423 13420. Waves 2 to 4 ft today. Waves 3
to 5 ft tonight.

MICHIGAN SOUTH 12404 11403 12413 13420. Waves 1 to 3 ft today.
Waves 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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