Great Lakes Forecast
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FZUS63 KLOT 131351
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
851 AM CDT Fri Jul 13 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...A 29.9 inch trough over the Upper Mississippi Valley
will slowly move across the Lake today and stall over the north
half of the lake tonight before dissipating over the weekend. A
29.7 inch trough will move into the central Great Plains Sunday
and Sunday night as high pressure of 30.1 inches builds over
southeast Ontario. The trough will move across the lake Monday.

LMZ261-362-364-366-563-565-567-868-132130-
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-
851 AM CDT Fri Jul 13 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...South winds 10 to 20 kt. Chance of showers and
thunderstorms. Waves 3 to 5 ft subsiding to 1 to 3 ft late.
.TONIGHT...Southwest winds 10 to 15 kt diminishing to 5 to 10 kt.
Chance of showers and thunderstorms. Waves 1 to 3 ft.
.SATURDAY...Southwest winds 5 to 10 kt. Chance of showers and
thunderstorms in the morning. Waves 1 to 2 ft.
.SATURDAY NIGHT...Southwest winds 5 to 10 kt becoming south.
Waves 1 ft or less.
.SUNDAY...Southeast winds 5 to 10 kt becoming southwest. Waves
nearly calm.
.SUNDAY NIGHT...South winds 5 to 10 kt becoming southwest. Chance
of showers and thunderstorms. Waves 1 ft or less.
.MONDAY...West winds 5 to 10 kt. Chance of showers and
thunderstorms. Waves 1 ft or less.
.TUESDAY...North winds 10 to 20 kt. Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-132130-
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-
851 AM CDT Fri Jul 13 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...South winds 10 to 20 kt. Waves 2 to 4 ft.
.TONIGHT...South winds 10 to 15 kt becoming southwest. Chance of
showers and thunderstorms. Waves 1 to 3 ft subsiding to 1 to
2 ft.
.SATURDAY...Southwest winds 5 to 10 kt backing to southeast.
Chance of showers and thunderstorms. Waves 1 to 2 ft.
.SATURDAY NIGHT...East winds 5 to 10 kt. Chance of showers and
thunderstorms in the evening. Waves 1 to 2 ft.
.SUNDAY...East winds 5 to 10 kt becoming northeast. Waves 1 ft or
less.
.SUNDAY NIGHT...Southeast winds 5 to 10 kt veering to southwest.
Waves 1 ft or less.
.MONDAY...West winds 5 to 10 kt becoming northwest. Waves 1 ft or
less.
.TUESDAY...North winds 15 to 25 kt. Waves 4 to 7 ft occasionally
to 9 ft.

$$
LMZ761-132130-
MAFOR 1315/
MICHIGAN NORTH 13420 12510 13500. Chance of showers and
thunderstorms. Waves 3 to 5 ft subsiding to 2 to 4 ft this
afternoon. Waves 1 to 3 ft tonight. Waves 1 ft or less Saturday
morning.


MICHIGAN SOUTH 13420 13410 11510 11500. Chance of showers and
thunderstorms tonight and Saturday morning. Waves 2 to 4 ft
subsiding to 1 to 3 tonight and Saturday morning.


$$


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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