Great Lakes Forecast
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FZUS63 KLOT 231442
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
942 AM CDT Wed May 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...High pressure of 30.1 inches is over Lake Michigan
early this morning. The high will shift to the eastern lakes by
Thursday then to the mid Atlantic Coast Thursday night. 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.

LMZ261-362-364-366-563-565-567-868-232115-
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-
942 AM CDT Wed May 23 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON...

.REST OF TODAY...South winds 5 to 10 kt increasing to southwest
10 to 15 kt. Areas of dense fog. Waves 1 to 2 ft.
.TONIGHT...South winds 10 to 15 kt. Patchy fog. Waves 1 to 2 ft.
.THURSDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.THURSDAY NIGHT...South winds 10 to 20 kt becoming southwest.
Waves 3 to 5 ft.
.FRIDAY...South winds 10 to 20 kt increasing to 15 to 25 kt.
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.
.SATURDAY...Southwest winds 10 to 20 kt becoming south. Waves
2 to 4 ft.
.SUNDAY...South winds 10 to 15 kt becoming southwest. Waves 1 to
2 ft.

$$

LMZ669-671-673-675-777-779-232115-
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-
942 AM CDT Wed May 23 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Variable winds less than 10 kt. Areas of fog,
locally dense on the east side of the lake. Waves 1 to 2 ft.
.TONIGHT...Variable winds 5 to 10 kt becoming southeast. Patchy
fog. Waves 1 to 2 ft.
.THURSDAY...South winds 5 to 10 kt becoming southeast. Waves 1 to
2 ft.
.THURSDAY NIGHT...South winds 10 to 15 kt. 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.
Chance of showers and thunderstorms. Waves 3 to 5 ft.
.SATURDAY...Southwest winds 10 to 20 kt becoming south. Waves
2 to 4 ft.
.SUNDAY...South winds 5 to 10 kt. Waves 1 to 2 ft.

$$

LMZ080-870-872-874-876-878-232115-
Lake Michigan from Michigan City IN to St. Joseph MI 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-
942 AM CDT Wed May 23 2018

WILMETTE HARBOR IL TO ST. JOSEPH MI SOUTH TO ROCK ISLAND PASSAGE
TO CHARLEVOIX MI...

...DENSE FOG ADVISORY IN EFFECT UNTIL 4 PM CDT THIS AFTERNOON...

.REST OF TODAY...Variable winds less than 10 kt. Areas of dense
fog. Waves 1 to 2 ft.
.TONIGHT...Variable winds 5 to 10 kt becoming southeast. Patchy
fog. Waves 1 to 2 ft.
.THURSDAY...South winds 5 to 10 kt becoming southeast. Waves 1 to
2 ft.
.THURSDAY NIGHT...South winds 10 to 15 kt. 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.
Chance of showers and thunderstorms. Waves 3 to 5 ft.
.SATURDAY...Southwest winds 10 to 20 kt becoming south. Waves
2 to 4 ft.
.SUNDAY...South winds 5 to 10 kt. Waves 1 to 2 ft.

$$
LMZ761-232115-
MAFOR 2315/
MICHIGAN NORTH 11404 11514 11510 14410 11410. Waves 1 to 3 ft.

MICHIGAN SOUTH 12903 19904 12910 13300 11400. Waves 1 to 2 ft.

$$


KMD

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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