Great Lakes Forecast
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000
FZUS63 KLOT 110149
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
849 PM CDT Thu Aug 10 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...Weak low pressure of 29.9 inches over the Upper
Peninsula will move to near Lake Huron Friday afternoon...then
into Quebec Saturday. A 30.1 inch high will build over the Upper
Midwest Friday, before spreading over the lakes region early next
week.

LMZ261-362-364-366-563-565-110800-
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-
849 PM CDT Thu Aug 10 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.REST OF TONIGHT...Southwest winds 15 to 25 kt veering to
northwest 10 to 15 kt. Chance of showers and thunderstorms this
evening...then slight chance of showers overnight. Waves 4 to 6
ft occasionally to 8 ft subsiding to 2 to 4 ft.
.FRIDAY...Northwest winds 10 to 15 kt increasing to 15 to 25 kt.
Slight chance of showers. Waves 2 to 4 ft.
.FRIDAY NIGHT...North winds 15 to 25 kt. Waves building to 4 to
6 ft occasionally to 8 ft.
.SATURDAY...North winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to 5 ft.
.SATURDAY NIGHT...North winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 1 to 3 ft.
.SUNDAY...West winds 5 to 10 kt becoming southwest 10 to 15 kt.
Waves 1 to 2 ft.
.SUNDAY NIGHT...West winds 5 to 10 kt becoming northwest. Waves
1 ft or less.
.MONDAY...West winds 5 to 10 kt increasing to 10 to 15 kt. Waves
1 ft or less.
.TUESDAY...West winds 10 to 15 kt becoming southwest. Waves 1 to
2 ft.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-110800-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 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 Pentwater to Manistee MI 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-
849 PM CDT Thu Aug 10 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

.REST OF TONIGHT...Southwest winds 15 to 25 kt becoming west 10
to 20 kt. Chance of showers and thunderstorms this evening. Waves
3 to 5 ft subsiding to 2 to 4 ft.
.FRIDAY...Northwest winds 10 to 20 kt becoming north. Waves 2 to
4 ft.
.FRIDAY NIGHT...North winds 10 to 20 kt increasing to 15 to 25
kt. Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
.SATURDAY...North winds 15 to 25 kt. Waves 4 to 7 ft occasionally
to 9 ft.
.SATURDAY NIGHT...North winds 10 to 20 kt diminishing to 10 to 15
kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.SUNDAY...Northeast winds 5 to 10 kt becoming north. Waves 1 to
3 ft.
.SUNDAY NIGHT...Northeast winds 5 to 10 kt increasing to 10 to
15 kt. Waves 1 ft or less.
.MONDAY...Northeast winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 2 ft.
.TUESDAY...North winds 10 to 15 kt becoming northwest 5 to 10 kt.
Waves 1 to 2 ft.

$$
LMZ761-110800-
MAFOR 1103/
MICHIGAN NORTH 11530 19620 11610 13710 12730 11830. Chance of
showers and thunderstorms this evening. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft tonight. Waves 2 to
4 ft Friday.

MICHIGAN SOUTH 11530 12620 13720 12820. Chance of showers and
thunderstorms this evening. Waves 3 to 5 ft subsiding to 2 to 4
ft tonight. Waves 2 to 4 ft Friday.

$$

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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