Great Lakes Forecast
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000
FZUS63 KLOT 100744
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
244 AM CDT Tue Jul 10 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 30.0 inch trough over central Lake Michigan will
clear the southern lake by late morning. High pressure of 30.2
inches over the southern Canadian Prairies will build into the
western Great Lakes region by this evening in the wake of the
trough. This high will slowly move east through the end of the
week. A 29.9 inch trough over the Upper Mississippi Valley
Thursday morning will shift south across Lake Michigan late
Thursday night through Friday, stalling or dissipating over or
just south of far southern Lake Michigan by Saturday. Another
trough will move into the central Great Plains Sunday as 30.1
inch high pressure builds over southeast Ontario.

LMZ261-362-364-366-563-565-567-868-101515-
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 Tue Jul 10 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...North winds 5 to 15 kt backing southwest. Waves 1 to 3
ft subsiding to 2 ft or less.
.TONIGHT...Northeast winds 10 to 15 kt diminishing to 5 to 10 kt.
Waves 1 ft or less.
.WEDNESDAY...Northeast winds 5 to 10 kt. Waves 1 ft or less.
.WEDNESDAY NIGHT...East winds 5 to 10 kt becoming southeast.
Waves nearly calm building to 1 to 2 ft.
.THURSDAY...South winds 10 to 20 kt increasing to 15 to 25 kt.
Chance of showers and thunderstorms in the afternoon. Waves 1 to
3 ft building to 4 to 6 ft occasionally to 8 ft.
.THURSDAY NIGHT...South winds 15 to 25 kt becoming southwest.
Chance of showers and thunderstorms. Waves 4 to 6 ft occasionally
to 8 ft.
.FRIDAY...Southwest winds 10 to 20 kt diminishing to 10 to 15 kt.
Chance of showers and thunderstorms. Waves 3 to 5 ft subsiding to
2 to 4 ft.
.SATURDAY...South winds 5 to 10 kt. Waves 1 ft or less.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-101515-
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 Tue Jul 10 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...North winds 10 to 20 kt. Waves 2 to 4 ft.
.TONIGHT...North winds 10 to 20 kt becoming northeast 10 to
15 kt. Waves 1 to 3 ft.
.WEDNESDAY...East winds 10 to 15 kt diminishing to less than
10 kt late in the morning, then becoming northeast 10 to 15 kt
in the afternoon. Waves 1 to 2 ft.
.WEDNESDAY NIGHT...East winds 10 to 15 kt becoming southeast.
Waves 1 to 2 ft.
.THURSDAY...South winds 10 to 15 kt increasing to 15 to 25 kt in
the afternoon. Waves 1 to 3 ft building to 3 to 5 ft.
.THURSDAY NIGHT...South winds 15 to 25 kt diminishing to 10 to
20 kt. Chance of showers and thunderstorms. Waves 3 to 5 ft.
.FRIDAY...Southwest winds 10 to 20 kt diminishing to 10 to 15 kt.
Chance of showers and thunderstorms. Waves 2 to 4 ft.
.SATURDAY...Southwest winds 5 to 10 kt becoming south. Chance of
showers and thunderstorms. Waves 1 ft or less.

$$

LMZ761-101515-
MAFOR 1009/
MICHIGAN NORTH 11820 11810 11710 11610 11510 12110 11100. Waves 3
ft or less.

MICHIGAN SOUTH 15820 11120 11110. Waves 2 to 4 ft.

$$

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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