Great Lakes Forecast
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000
FZUS63 KLOT 161346
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
846 AM CDT Sat Sep 16 2017

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 stretches along the
Appalachians this morning and will generally remain across the
region into the middle of next week weakening to 30.0 inches.
Meanwhile, low pressure of 29.8 inches is over northern Minnesota
this morning and will lift to Ontario Sunday. High pressure of
30.2 inches will build into the northern Great Plains Sunday and
move to Lake Superior Monday. Another low of 29.5 inches will
meander over the northern Great Plains and Canadian Prairies
Tuesday through Thursday.

LMZ261-362-364-366-563-565-567-868-162130-
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-
846 AM CDT Sat Sep 16 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...South winds 15 to 25 kt. Waves 3 to 5 ft building to 4
to 6 ft occasionally to 8 ft.
.TONIGHT...South winds 15 to 25 kt. Waves 4 to 6 ft occasionally
to 8 ft.
.SUNDAY...South winds 15 to 25 kt becoming west 10 to 20 kt.
Chance of showers. Waves 4 to 6 ft occasionally to 8 ft subsiding
to 3 to 5 ft.
.SUNDAY NIGHT...North winds 10 to 20 kt. Waves 2 to 4 ft.
.MONDAY...Northeast winds 10 to 20 kt. Waves 2 to 4 ft.
.MONDAY NIGHT...Northeast winds 10 to 20 kt becoming east. Chance
of showers. Waves 1 to 3 ft.
.TUESDAY...East winds 10 to 20 kt. Waves 1 to 3 ft.
.WEDNESDAY...Southeast winds 10 to 20 kt becoming south. Waves
2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-162130-
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-
846 AM CDT Sat Sep 16 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...South winds 15 to 20 kt becoming southeast. Waves 3 to 5
ft.
.TONIGHT...Southeast winds 15 to 20 kt becoming south 15 to 25
kt. Waves 3 to 5 ft.
.SUNDAY...South winds 10 to 20 kt veering to northwest 10 to
15 kt. Chance of showers and thunderstorms in the afternoon.
Waves 3 to 5 ft subsiding to 1 to 3 ft.
.SUNDAY NIGHT...North winds 10 to 20 kt. Waves 1 to 3 ft building
to 2 to 4 ft.
.MONDAY...Northeast winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 2 to 4 ft.
.MONDAY NIGHT...Northeast winds 10 to 20 kt becoming east. Chance
of showers. Waves 1 to 2 ft.
.TUESDAY...Southeast winds 10 to 20 kt. Waves 1 to 3 ft.
.WEDNESDAY...Southeast winds 10 to 20 kt becoming south. Waves
2 to 4 ft.

$$
LMZ761-162130-
MAFOR 1615/
MICHIGAN NORTH 16430. Chance of showers Sunday morning. Waves 3 to
5 ft building to 4 to 6 feet occasionally to 8 feet this
afternoon. Waves 4 to 6 ft occasionally to 8 ft tonight and Sunday
morning.

MICHIGAN SOUTH 12420 12320 14420. Waves 3 to 5 feet.

$$

MDB

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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