Great Lakes Forecast
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000
FZUS63 KLOT 170204
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
904 PM CDT Sat Sep 16 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...High pressure of 30.2 inches will remain parked across
the Appalachians and New England into the middle of next week
while weakening slightly to 30.0 inches. Meanwhile, low pressure
of 29.8 inches from the upper Mississippi Valley to western Lake
Superior will lift through Ontario on Sunday. High pressure of
30.2 inches will build into the northern Great Plains on Sunday
and then move to Lake Superior Monday. Another low of 29.5 inches
will meander over the northern Great Plains and Canadian Prairies
Tuesday through Thursday.

LMZ261-362-364-366-563-565-567-868-170930-
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-
904 PM CDT Sat Sep 16 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...South winds 10 to 20 kt increasing to 15 to 25
kt. Isolated showers and thunderstorms overnight. Waves 4 to 6 ft
occasionally to 8 ft.
.SUNDAY...Southwest winds 15 to 25 kt veering to northwest 10 to
15 kt. Chance of showers and slight chance of thunderstorms in
the morning...then slight chance of showers and thunderstorms in
the afternoon. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3
to 5 ft late.
.SUNDAY NIGHT...North winds 10 to 20 kt becoming northeast. Waves
1 to 3 ft.
.MONDAY...Northeast winds 10 to 20 kt. Waves 1 to 3 ft.
.MONDAY NIGHT...Northeast winds 10 to 20 kt becoming east. Chance
of showers overnight. Waves 1 to 3 ft.
.TUESDAY...East winds 10 to 20 kt. Waves 1 to 3 ft.
.TUESDAY NIGHT...East winds 10 to 20 kt becoming southeast. Waves
1 to 3 ft.
.WEDNESDAY...Southeast winds 10 to 20 kt becoming south. Waves
2 to 4 ft.
.THURSDAY...North winds 10 to 20 kt becoming northeast 10 to
15 kt. Waves 2 to 4 ft subsiding to 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-170930-
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-
904 PM CDT Sat Sep 16 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Southeast winds 10 to 20 kt becoming south.
Waves 3 to 5 ft.
.SUNDAY...South winds 10 to 20 kt veering to northwest 10 to
15 kt. Slight chance of showers and thunderstorms in the
morning...then chance of showers and thunderstorms in the
afternoon. Waves 3 to 5 ft subsiding to 1 to 3 ft late.
.SUNDAY NIGHT...Northwest winds 10 to 20 kt becoming north. Waves
1 to 3 ft.
.MONDAY...Northeast winds 10 to 20 kt. Waves 1 to 3 ft.
.MONDAY NIGHT...East winds 10 to 20 kt becoming southeast. Chance
of showers. Waves 1 to 3 ft.
.TUESDAY...East winds 10 to 20 kt diminishing to 10 to 15 kt.
Chance of showers in the morning. Waves 1 to 3 ft.
.TUESDAY NIGHT...East winds 10 to 15 kt becoming southeast 10 to
20 kt. Waves 1 to 2 ft.
.WEDNESDAY...South winds 10 to 20 kt. Waves 2 to 4 ft.
.THURSDAY...North winds 10 to 20 kt becoming northeast 10 to
15 kt. Waves 1 to 3 ft.

$$
LMZ761-170930-
MAFOR 1703/
MICHIGAN NORTH 10420 13430 12530 11610 11710 11820. Chance of
showers Sunday. Waves 4 to 6 feet occasionally to 8 feet
overnight and Sunday morning subsiding to 3 to 5 feet Sunday
afternoon and to 1 to 3 feet Sunday evening.

MICHIGAN SOUTH 10320 14420 11510 11610 11710 11720. Chance of
showers and thunderstorms Sunday, mainly in the afternoon. Waves
3 to 5 feet overnight and Sunday morning subsiding to 1 to 3 feet
Sunday afternoon and continuing Sunday evening.

$$

RC

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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