Great Lakes Forecast
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000
FZUS63 KLOT 180151
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
851 PM CDT Thu Aug 17 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...Low pressure of 29.5 inches over the Upper
Peninsula of Michigan will continue northeast across Quebec
through the weekend. Low pressure of 29.8 inches will pass south
of the lake Friday night and then dissipate over eastern Indiana
Saturday afternoon. Weak high pressure of 29.9 inches will spread
over the lake Saturday evening before reaching the Atlantic Coast
Monday. The next cold front slides down the lake late on Tuesday.

LMZ261-362-364-366-563-565-180930-
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-
851 PM CDT Thu Aug 17 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.REST OF TONIGHT...South winds 15 to 25 kt becoming west to 30
kt. Chance of showers. Waves 4 to 7 ft occasionally to 9 ft.
.FRIDAY...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Slight chance of showers. Waves 4 to 6 ft occasionally to 8 ft.
.FRIDAY NIGHT...Northwest winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.SATURDAY...West winds 10 to 20 kt becoming southwest. Waves 1 to
3 ft.
.SATURDAY NIGHT...Southwest winds 10 to 20 kt. Waves 1 to 3 ft.
.SUNDAY...Southwest winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 1 to 3 ft building to 2 to 4 ft.
.SUNDAY NIGHT...Southwest winds 15 to 25 kt. Waves 3 to 5 ft.
.MONDAY...Southwest winds 10 to 20 kt becoming south. Chance of
showers and thunderstorms. Waves 2 to 4 ft.
.TUESDAY...Southwest winds 10 to 20 kt veering to northwest 10 to
15 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-180930-
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-
851 PM CDT Thu Aug 17 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

.REST OF TONIGHT...West winds to 30 kt. Chance of showers. Waves
3 to 6 ft occasionally to 8 ft building to 5 to 8 ft occasionally
to 10 ft.
.FRIDAY...West winds to 30 kt diminishing to 10 to 20 kt through
the afternoon. Waves 5 to 8 ft occasionally to 10 ft subsiding to
4 to 6 ft occasionally to 8 ft.
.FRIDAY NIGHT...West winds 10 to 20 kt becoming northwest 10 to
15 kt. Chance of showers overnight. Waves 3 to 5 ft subsiding to
2 to 4 ft.
.SATURDAY...Northwest winds 10 to 15 kt becoming variable. Waves
1 to 2 ft.
.SATURDAY NIGHT...South winds 10 to 15 kt becoming southwest.
Waves 1 to 2 ft.
.SUNDAY...Southwest winds 10 to 15 kt becoming south 10 to 20 kt.
Waves 1 to 2 ft building to 1 to 3 ft.
.SUNDAY NIGHT...South winds 10 to 20 kt. Waves 2 to 4 ft.
.MONDAY...South winds 10 to 20 kt. Waves 2 to 4 ft.
.TUESDAY...Southwest winds 10 to 20 kt becoming west. Chance of
showers and thunderstorms. Waves 1 to 3 ft.

$$
LMZ761-180930-
MAFOR 1803/
MICHIGAN NORTH 11433 11530 11640 12740 13730. Waves 4 to 7 ft
occasionally to 9 ft.

MICHIGAN SOUTH 14640 11640 11630 12620. Waves 3 to 6 ft
occasionally to 8 ft building to 5 to 8 ft occasionally to 10 ft
tonight then subsiding to 4 to 6 ft occasionally to 8 ft Friday
afternoon.

$$

- Izzi

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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