Great Lakes Forecast
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043
FZUS63 KMKX 151934
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
234 PM CDT Sat May 15 2021

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 around 30.4 inches in the Ohio Valley continue to
drift very slowly east through the weekend. Winds will be mostly
less than 20 knots and from the southwest to southeast. A few
showers may affect the lake this evening. Winds will shift to
easterly Sunday night and as a frontal boundary moves into the
Ohio River Valley.

&&

LMZ261-362-364-366-563-565-567-868-160330-
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-
234 PM CDT Sat May 15 2021

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...South winds 10 to 20 kt becoming southeast 10 to
15 kt. Chance of rain showers. Waves 1 to 3 ft.
.SUNDAY...South winds 5 to 10 kt. Waves 1 to 2 ft.
.SUNDAY NIGHT...South winds 5 to 10 kt. Waves 1 ft or less.
.MONDAY...South winds 5 to 10 kt becoming southwest. Waves 1 ft
or less.
.MONDAY NIGHT...Southeast winds 5 to 10 kt. Waves 1 ft or less.
.TUESDAY...Southeast winds 5 to 10 kt increasing to 10 to 15 kt.
Waves 1 to 2 ft.
.TUESDAY NIGHT...Southeast winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 to 2 ft building to 2 to 4 ft.
.WEDNESDAY...South winds 10 to 20 kt. Chance of showers. Waves
3 to 5 ft.
.THURSDAY...South winds 10 to 20 kt. Chance of showers. Waves
3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-160330-
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-
234 PM CDT Sat May 15 2021

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Southeast winds 10 to 20 kt becoming south 10 to
15 kt. Chance of rain showers this evening, then slight chance of
rain showers overnight. Waves 1 to 3 ft.
.SUNDAY...South winds 5 to 10 kt becoming southeast. Waves 1 to
2 ft.
.SUNDAY NIGHT...East winds 5 to 10 kt. Chance of rain showers
overnight. Waves 1 ft or less.
.MONDAY...East winds 5 to 10 kt increasing to 10 to 15 kt. Waves
1 ft or less.
.MONDAY NIGHT...East winds 10 to 15 kt becoming southeast. Waves
1 to 2 ft.
.TUESDAY...Southeast winds 10 to 15 kt increasing to 10 to 20 kt.
Chance of showers in the afternoon. Waves 1 to 3 ft.
.TUESDAY NIGHT...Southeast winds 10 to 15 kt increasing to 10 to
20 kt. Chance of showers. Waves 2 to 4 ft.
.WEDNESDAY...South winds 10 to 20 kt. Chance of showers. Waves
3 to 5 ft.
.THURSDAY...South winds 10 to 20 kt. Chance of showers. Waves
3 to 5 ft.

$$

LMZ761-160330-
MAFOR 1521/
MICHIGAN NORTH 13420 12310 13400. Chance of showers tonight.
Waves 1 to 3 feet tonight. Waves 2 feet or less Sunday.

MICHIGAN SOUTH 11420 12320 12410 12400 11300. Chance of showers
this evening. Waves 1 to 3 feet tonight. Waves 2 feet or less
Sunday.

$$


Patterson

Experimental modernized open lake forecast is available online at
weather.gov/mkx/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes



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