Great Lakes Forecast
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FZUS63 KLOT 180744
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
244 AM CDT Mon Sep 18 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...The 30.2 inch high over Wisconsin will pass over the
northern end of the lake this morning and then reach Ontario
tonight. A low of 29.4 inches will form over the northern Plains
Tuesday and deepen over Saskatchewan through Wednesday. The low
will reach Hudson Bay Thursday night. A second low of 29.4 inches
will form over the central Plains Thursday night and then form a
low pressure trough that will span from south central Canada
through the southern Plains Saturday.

LMZ261-362-364-366-563-565-567-868-181515-
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-
244 AM CDT Mon Sep 18 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Northeast winds 10 to 20 kt. Waves 2 to 4 ft subsiding
to 1 to 3 ft.
.TONIGHT...Northeast winds 10 to 20 kt becoming east. Waves 1 to
3 ft.
.TUESDAY...Southeast winds 10 to 20 kt becoming east. Waves 1 to
3 ft.
.TUESDAY NIGHT...East winds 10 to 20 kt becoming southeast. Waves
2 to 4 ft.
.WEDNESDAY...Southeast winds 15 to 25 kt becoming south. Waves
3 to 5 ft.
.WEDNESDAY NIGHT...South winds 10 to 20 kt. Chance of showers.
Waves 2 to 4 ft.
.THURSDAY...South winds 10 to 20 kt becoming southeast. Waves 1
to 3 ft.
.FRIDAY...South winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-181515-
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-
244 AM CDT Mon Sep 18 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Northeast winds 10 to 20 kt diminishing to 10 to 15 kt.
Waves 2 to 4 ft subsiding to 1 to 3 ft.
.TONIGHT...Northeast winds 10 to 20 kt becoming east. Slight
chance of showers and thunderstorms overnight. Waves 1 to 3 ft.
.TUESDAY...East winds 10 to 20 kt diminishing to 10 to 15 kt.
Chance of showers in the morning. Waves 2 to 4 ft.
.TUESDAY NIGHT...East winds 10 to 20 kt becoming southeast. Waves
1 to 3 ft.
.WEDNESDAY...Southeast winds 10 to 20 kt becoming south. Waves
2 to 4 ft.
.WEDNESDAY NIGHT...South winds 10 to 20 kt. Chance of showers.
Waves 2 to 4 ft.
.THURSDAY...South winds 10 to 20 kt becoming southeast. Waves
1 to 3 ft.
.FRIDAY...Southeast winds 10 to 15 kt. Waves 1 to 2 ft.

$$

LMZ761-181515-
MAFOR 1809/
MICHIGAN NORTH 15120 12220. Waves 2 to 4 feet subsiding to 1 to 3
feet today. Waves 1 to 3 feet tonight.

MICHIGAN SOUTH 12120 12110 12120 12220. Waves 2 to 4 feet
subsiding to 1 to 3 feet today. Waves 1 to 3 feet tonight.

$$


JEE

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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