Great Lakes Forecast
Issued by NWS

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000
FZUS63 KLOT 171319
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
819 AM CDT Sat Jun 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...The 29.5 inch low over northeast Ontario will open to
a low pressure trough that spans from west central Quebec through
the western Great Lakes this afternoon. A 29.4 inch low will form
over the lake tonight and then reach southwest Quebec Sunday
afternoon. The low will slowly continue north over western Quebec
while high pressure of 29.9 inches will spread over the plains
Sunday night. The high will strengthen to 30.1 inches over the
southern Mississippi Valley early next week while a second high of
30.0 inches will move over the Dakotas. The two highs will merge
together Wednesday and the northern edge of the high pressure
ridge will pass over the lake Wednesday afternoon averaging 29.9
inches.

LMZ261-362-364-366-563-565-172130-
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-
819 AM CDT Sat Jun 17 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.REST OF TODAY...South winds 10 to 15 kt becoming southwest.
Slight chance of showers and thunderstorms this morning...then
slight chance of showers this afternoon. Waves 1 to 2 ft.
.TONIGHT...South winds 5 to 10 kt becoming southeast. Chance of
showers and thunderstorms in the evening...then showers and
thunderstorms likely overnight. Waves 1 to 2 ft.
.SUNDAY...South winds 10 to 20 kt veering to west. Showers likely
in the morning...then chance of showers in the afternoon. Waves
1 to 3 ft.
.SUNDAY NIGHT...Northwest winds 10 to 20 kt diminishing to 10 to
15 kt. Chance of showers in the evening. Waves 1 to 3 ft.
.MONDAY...West winds 10 to 15 kt becoming southwest. Chance of
showers. Waves 1 to 2 ft.
.MONDAY NIGHT...West winds 10 to 15 kt. Waves 1 to 2 ft.
.TUESDAY...Southwest winds 10 to 15 kt becoming west. Chance of
showers and thunderstorms. Waves 1 to 2 ft.
.WEDNESDAY...West winds 10 to 15 kt becoming southwest. Waves
1 to 2 ft.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-172130-
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-
819 AM CDT Sat Jun 17 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

.REST OF TODAY...Southeast winds 10 to 15 kt shifting to south
winds 10 to 20 kt. Chance of showers and slight chance of
thunderstorms. Waves 1 to 3 ft.
.TONIGHT...South winds 10 to 15 kt becoming southwest 15 to
25 kt overnight. Chance of showers and thunderstorms. Waves 2 to
4 ft.
.SUNDAY...Southwest winds 15 to 25 kt becoming west 10 to 20 kt.
Chance of showers. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.SUNDAY NIGHT...West winds 10 to 20 kt becoming northwest. Waves
1 to 3 ft.
.MONDAY...West winds 10 to 20 kt. Waves 1 to 3 ft.
.MONDAY NIGHT...West winds 10 to 20 kt. Waves 1 to 3 ft.
.TUESDAY...West winds 10 to 20 kt. Chance of showers and
thunderstorms. Waves 1 to 3 ft.
.WEDNESDAY...West winds 5 to 10 kt becoming southwest 10 to
15 kt. Waves 1 ft or less.

$$
LMZ761-172130-
MAFOR 1715/
MICHIGAN NORTH 11410 12510 11410 12310 11319 11426. Chance of
showers and thunderstorms late tonight. Waves 1 to 3 ft.

MICHIGAN SOUTH 11310 12420 11410 12420 12530. Chance of showers
today. Chance of showers and thunderstorms tonight and Sunday
morning. Waves 1 to 3 ft today. Waves 2 to 4 ft tonight.

$$


KMD

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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