Great Lakes Forecast
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FZUS63 KLOT 241941
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
241 PM 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 will continue to drift
away from the Lakes and across the mid-Atlantic region tonight.
Farther northwest, an area of low pressure near Lake Winnipeg
will deepen to 29.5 inches tonight, then will slowly track
southeast with its associated cold front across the northern Lakes
through Sunday morning while weakening to 29.8 inches. The
diffuse front will sag south of Lake Michigan Sunday night. High
pressure of 30.2 inches will spread across Ontario north of the
Lakes Monday and Tuesday.

LMZ261-362-364-366-563-565-567-868-250315-
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-
241 PM CDT Thu May 24 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...South winds 10 to 20 kt becoming southwest. Slight
chance of showers and thunderstorms. Waves 2 to 4 ft building to
3 to 5 ft.
.FRIDAY...Southwest winds 10 to 20 kt becoming south 15 to 25 kt.
Slight chance of showers and thunderstorms in the morning, then
chance of showers and thunderstorms in the afternoon. Waves 3 to
5 ft.
.FRIDAY NIGHT...Southwest winds 15 to 25 kt diminishing to 10 to
15 kt. Chance of showers. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.SATURDAY...Southwest winds 10 to 15 kt becoming south. Chance of
showers in the afternoon. Waves 1 to 3 ft.
.SATURDAY NIGHT...South winds 10 to 15 kt. Chance of showers in
the evening. Waves 1 to 2 ft.
.SUNDAY...South winds 5 to 10 kt becoming southwest. Waves 1 to
2 ft.
.SUNDAY NIGHT...Southwest winds 10 to 15 kt becoming west 5 to
10 kt. Waves 1 to 2 ft.
.MONDAY...Northwest winds 5 to 10 kt becoming west. Waves 1 to
2 ft.
.TUESDAY...Northeast winds 5 to 10 kt. Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-250315-
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-
241 PM CDT Thu May 24 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Southeast winds 10 to 20 kt becoming south. Waves 1 to
3 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 10 to 15 kt becoming southwest 5 to
10 kt. Waves 1 to 2 ft.
.SUNDAY...Southwest winds 5 to 10 kt becoming south. Waves 1 ft
or less.
.SUNDAY NIGHT...South winds 5 to 10 kt becoming southwest. Waves
1 to 2 ft.
.MONDAY...Northwest winds 5 to 10 kt becoming north. Waves 1 to
2 ft.
.TUESDAY...East winds 5 to 10 kt becoming northeast 10 to 15 kt.
Waves 1 to 2 ft.

$$

LMZ761-250315-
MAFOR 2421/
MICHIGAN NORTH 13420 14520 11430. Waves 2 to 4 ft building to 3
to 5 ft tonight. Waves 3 to 5 ft Friday.

MICHIGAN SOUTH 11420 11310 14410 12420. Waves 2 to 4 ft.

$$

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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