Great Lakes Forecast
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503
FZUS63 KLOT 171945
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
245 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 peninsular
of Michigan will continue northeast across Quebec through the
weekend. The low`s cold front will swing across the lake this
evening. 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.

LMZ261-362-364-366-563-565-180315-
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-
245 PM CDT Thu Aug 17 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.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 subsiding to 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.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-180315-
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-
245 PM CDT Thu Aug 17 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

.TONIGHT...Southwest winds 15 to 25 kt becoming west to 30 kt.
Chance of showers. Waves 4 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.

$$

LMZ761-180315-
MAFOR 1721/
MICHIGAN NORTH 11430 11530 11540 12640 12740 11730. Chance of
showers tonight. Waves 4 to 7 feet occasionally to 9 feet
tonight. Waves subsiding to 4 to 6 feet occasionally to 8 feet
Friday.


MICHIGAN SOUTH 12530 14640 11640 11630. Chance of showers early
this evening. Waves 4 to 6 feet occasionally to 8 feet building
to 5 to 8 feet occasionally to 10 feet tonight. Waves 5 to 8 feet
occasionally to 10 feet subsiding to 4 to 6 feet occasionally to
8 feet Friday.

$$


JEE

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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