Great Lakes Forecast
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899
FZUS63 KLOT 161940
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
240 PM CDT Mon Jul 16 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...Low pressure of 29.6 inches over James Bay this
afternoon with a trailing cold front just east of Lake Michigan.
High pressure of 30.2 inches over Saskatchewan this afternoon will
build over the western Great Lakes Tuesday night, then move to New
England Thursday. Low pressure of 29.7 inches will move from
southern Saskatchewan Wednesday to Lake Michigan Friday night.


LMZ261-362-364-366-563-565-567-868-170315-
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-
240 PM CDT Mon Jul 16 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...West winds 10 to 15 kt veering to northwest and
increasing to 15 to 20 kt...then becoming north 15 to 25 kt late.
Waves 1 to 3 ft building to 2 to 4 ft.
.TUESDAY...North winds 15 to 20 kt. Waves 3 to 5 ft.
.TUESDAY NIGHT...North winds 10 to 20 kt becoming northeast 5 to
10 kt. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.WEDNESDAY...North winds 5 to 10 kt backing to southwest. Waves
1 to 2 ft.
.WEDNESDAY NIGHT...South winds 5 to 10 kt. Waves 1 ft or less.
.THURSDAY...South winds 10 to 20 kt. Waves 1 to 2 ft building to
1 to 3 ft.
.THURSDAY NIGHT...Southeast winds to 30 kt becoming south. Chance
of showers and thunderstorms. Waves 3 to 5 ft building to 4 to
7 ft occasionally to 9 ft.
.FRIDAY...South winds 15 to 25 kt. Chance of showers and
thunderstorms. Waves 5 to 8 ft occasionally to 10 ft.
.SATURDAY...Northeast winds 10 to 20 kt becoming north 15 to
25 kt. Chance of showers and thunderstorms. Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-170315-
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-
240 PM CDT Mon Jul 16 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...North winds 10 to 15 kt becoming northwest and
increasing to 15 to 25 kt. Waves 1 to 3 ft building to 4 to 6 ft
occasionally to 8 ft.
.TUESDAY...North winds 15 to 20 kt. Waves 3 to 6 ft occasionally
to 8 ft.
.TUESDAY NIGHT...Northeast winds 10 to 20 kt diminishing to 5 to
10 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.WEDNESDAY...Northeast winds 5 to 10 kt. Waves 1 to 3 ft.
.WEDNESDAY NIGHT...East winds 5 to 10 kt becoming southeast.
Waves 1 ft or less.
.THURSDAY...Southeast winds 10 to 20 kt becoming south. Waves
1 to 2 ft building to 2 to 4 ft.
.THURSDAY NIGHT...South winds to 30 kt. Chance of showers and
thunderstorms. Waves 3 to 5 ft building to 4 to 7 ft occasionally
to 9 ft.
.FRIDAY...South winds 15 to 25 kt becoming southwest. Chance of
showers and thunderstorms. Waves 4 to 7 ft occasionally to 9 ft.
.SATURDAY...West winds 10 to 20 kt becoming northwest 15 to
25 kt. Chance of showers and thunderstorms. Waves 2 to 4 ft.

$$

LMZ761-170315-
MAFOR 1621/
MICHIGAN NORTH 11610 12710 11720 11830 13820. Waves 1 to 3 ft
building to 2 to 4 ft tonight. Waves 3 to 5 ft Tuesday.

MICHIGAN SOUTH 11810 11710 11720 12730 13820. Waves 1 to 3 ft
building to 4 to 6 ft occasionally to 8 ft tonight. Waves 3 to 6
ft occasionally to 8 ft Tuesday.

$$

BMD

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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