Great Lakes Forecast
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457
FZUS63 KLOT 170148
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
848 PM CDT Sun Sep 16 2018

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 29.6 inches southern Manitoba will
move into Ontario by early Monday, and into southern Quebec by
Monday evening. A cold front trailing from this low will push
southeast across Lake Michigan Monday night, eventually stalling
just south of the lake Tuesday. High pressure of 30.2 inches will
spread across Ontario and the northern Lakes Tuesday night while
the front remains stalled just south of the lake. Low pressure
will then develop across the Plains mid-week, deepening to 29.6
inches and lifting to the northern Lakes by late Thursday. The
stalled front will lift north as a warm front across the lake
ahead of this low.

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-
848 PM CDT Sun Sep 16 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...East winds 5 to 10 kt becoming south and
gradually increasing to 10 to 20 kt by morning. Waves 1 to 2 ft
building to 2 to 4 ft.
.MONDAY...Southwest winds 10 to 20 kt shifting to north and
increasing to 15 to 25 kt late. Slight chance of showers in the
afternoon. Waves 2 to 4 ft.
.MONDAY NIGHT...North winds 15 to 25 kt becoming northeast 10 to
20 kt. Waves building to 4 to 7 ft occasionally to 9 ft.
.TUESDAY...Northeast winds 10 to 15 kt becoming north. Chance of
showers in the morning. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.TUESDAY NIGHT...North winds 10 to 20 kt becoming northeast.
Waves 2 to 4 ft.
.WEDNESDAY...Northeast winds 10 to 15 kt becoming east. Chance of
showers. Waves 2 to 4 ft.
.WEDNESDAY NIGHT...East winds 10 to 20 kt becoming southeast.
Showers likely with a chance of thunderstorms. Waves 1 to 3 ft.
.THURSDAY...Southeast winds 10 to 20 kt becoming south to 30 kt.
Showers likely with a chance of thunderstorms. Waves 2 to 4 ft
building to 4 to 6 ft occasionally to 8 ft.
.FRIDAY...Northwest winds 15 to 25 kt becoming north 10 to 20 kt.
Waves 4 to 6 ft occasionally to 8 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-
848 PM CDT Sun Sep 16 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...East winds 5 to 10 kt veering to south. Waves
1 ft or less.
.MONDAY...South winds 5 to 10 kt. Waves 1 ft or less.
.MONDAY NIGHT...Southwest winds increasing to 10 to 20 kt in the
evening, then shifting to north. Waves 1 to 2 ft building to 3 to
6 ft occasionally to 8 ft.
.TUESDAY...North winds 10 to 15 kt. Chance of showers and
thunderstorms in the morning. Waves 3 to 5 ft subsiding to 1 to
3 ft.
.TUESDAY NIGHT...Northeast winds 10 to 20 kt diminishing to 10 to
15 kt. Chance of showers and thunderstorms overnight. Waves 2 to
4 ft.
.WEDNESDAY...East winds 5 to 10 kt increasing to 10 to 15 kt.
Chance of showers and thunderstorms. Waves 2 to 4 ft.
.WEDNESDAY NIGHT...Southeast winds 10 to 20 kt becoming south.
Chance of showers and thunderstorms. Waves 1 to 3 ft.
.THURSDAY...South winds 15 to 25 kt becoming southwest. Chance of
showers and thunderstorms. Waves 3 to 5 ft.
.FRIDAY...Northwest winds 15 to 25 kt becoming north 10 to 20 kt.
Chance of showers and thunderstorms. Waves 4 to 6 ft occasionally
to 8 ft.

$$
LMZ761-170930-
MAFOR 1703/
MICHIGAN NORTH 10200 11300 11410 11420 13520 12830. Waves 1 to 2
ft building to 2 to 4 ft tonight and continuing 2 to 4 ft Monday.

MICHIGAN SOUTH 11200 11300 11400 14400 11510. Waves 1 ft or less.

$$

- Izzi

Experimental modernized open lake forecast is available online at
weather.gov/lot/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes

NOTICE - Starting Wednesday September 19th 2018 this product will
be issued by NWS Milwaukee. For additional information:

https://www.weather.gov/media/notification/pdfs/scn18-64lake_michigan_transfer.pdf
Or Contact: Ed Fenelon at Edward.Fenelon@noaa.gov



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