Great Lakes Forecast
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588
FZUS63 KLOT 171342
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
842 AM CDT Tue Jul 17 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 trough of low pressure averaging 29.8 inches over
the far eastern Great Lakes will move to New England today. High
pressure of 30.2 inches over the Northern Plains and southern
Canada will build across the western Great Lakes tonight, then
move to New England by Thursday. Low pressure of 29.7 inches will
move from southern Saskatchewan Wednesday to Lake Michigan Friday
night.

LMZ261-362-364-366-563-565-567-868-172115-
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-
842 AM CDT Tue Jul 17 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...North winds 10 to 20 kt. Waves 2 to 4 ft.
.TONIGHT...North winds 10 to 20 kt diminishing to 5 to 10 kt.
Waves 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 to 2 ft.
.THURSDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft building to 1 to 3 ft.
.THURSDAY NIGHT...South winds 15 to 25 kt. Chance of showers and
thunderstorms. Waves 3 to 5 ft building to 4 to 6 ft occasionally
to 8 ft.
.FRIDAY...South winds 15 to 25 kt. Chance of showers and
thunderstorms. Waves 4 to 6 ft occasionally to 8 ft.
.SATURDAY...North winds 10 to 20 kt increasing to 15 to 25 kt.
Chance of showers and thunderstorms. Waves 1 to 3 ft building to
4 to 6 ft occasionally to 8 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-172115-
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-
842 AM CDT Tue Jul 17 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...North winds 10 to 20 kt increasing to 15 to 25
kt. Waves 3 to 6 ft occasionally to 8 ft.
.TONIGHT...Northeast winds 15 to 25 kt diminishing to 10 to
15 kt. Waves 3 to 6 ft occasionally to 8 ft subsiding to 2 to 4
ft.
.WEDNESDAY...Northeast winds 5 to 10 kt. Waves 1 to 3 ft
subsiding to 1 to 2 ft.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 kt becoming southeast.
Waves 1 to 2 ft.
.THURSDAY...South winds 10 to 20 kt. Waves 1 to 2 ft building to
2 to 4 ft.
.THURSDAY NIGHT...South winds 15 to 25 kt. Chance of showers and
thunderstorms. Waves 3 to 5 ft building to 4 to 6 ft occasionally
to 8 ft.
.FRIDAY...South winds 15 to 25 kt becoming southwest. Chance of
showers and thunderstorms. Waves 4 to 6 ft occasionally to 8 ft.
.SATURDAY...Northwest winds 10 to 20 kt increasing to 15 to
25 kt. Chance of showers and thunderstorms. Waves 2 to 4 ft
building to 3 to 5 ft.

$$
LMZ761-172115-
MAFOR 1715/
MICHIGAN NORTH 14820 11120 11110 12800. Waves 2 to 4 ft this
afternoon and tonight. Waves 1 to 3 ft Wednesday morning.

MICHIGAN SOUTH 11820 12830 11130 11120 12110 11100. Waves 3 to 6
ft occasionally to 8 ft this afternoon and evening subsiding to 2
to 4 ft overnight and Wednesday morning.

$$

Kluber

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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