Great Lakes Forecast
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FZUS63 KLOT 141944
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
244 PM CDT Fri Jul 14 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 29.9 inches is centered over the
eastern Great Lakes this afternoon while high pressure of 30.2
inches is building across the Upper Mississippi Valley. The high
pressure will spread southeast across the Ohio Valley Saturday
night into Sunday. A trough averaging 29.9 inches will move over
Lake Superior Saturday and across Lake Michigan Saturday night
into Sunday. Another high of 30.1 inches will build across the
western Great Lakes Sunday night into Monday.

LMZ261-362-364-366-563-565-567-868-150315-
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-
244 PM CDT Fri Jul 14 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Northwest winds 10 to 20 kt becoming southwest 10 to 15
kt. Waves 1 to 3 ft.
.SATURDAY...Southwest winds 10 to 20 kt increasing to 15 to 25
kt. Chance of showers and thunderstorms in the afternoon. Waves 1
to 3 ft building to 3 to 5 ft.
.SATURDAY NIGHT...West winds 15 to 25 kt veering to north to
30 kt. Chance of showers and thunderstorms in the evening. Waves
3 to 5 ft.
.SUNDAY...North winds to 30 kt diminishing to 15 to 25 kt. Waves
3 to 5 ft.
.SUNDAY NIGHT...North winds 15 to 25 kt becoming northeast 10 to
20 kt. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.MONDAY...Northeast winds 5 to 10 kt backing to west. Waves 1 to
2 ft.
.MONDAY NIGHT...Southwest winds 10 to 15 kt becoming south 10 to
20 kt. Waves 1 to 2 ft.
.TUESDAY...Southwest winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 2 to 4 ft.
.WEDNESDAY...North winds 10 to 15 kt. Chance of showers and
thunderstorms. Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-150315-
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-
244 PM CDT Fri Jul 14 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...North winds 10 to 20 kt becoming northwest 10 to
15 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.SATURDAY...West winds around 10 kt backing to south 10 to 20 kt.
Waves 1 to 3 ft.
.SATURDAY NIGHT...Southwest winds 10 to 20 kt veering to north
15 to 25 kt. Chance of showers and thunderstorms overnight. Waves
2 to 4 ft building to 3 to 5 ft.
.SUNDAY...North winds 15 to 25 kt increasing to 30 kt. Waves 4 to
6 ft occasionally to 8 ft.
.SUNDAY NIGHT...North winds 15 to 25 kt becoming northeast 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft.
.MONDAY...Northeast winds 10 to 15 kt becoming north. Waves 2 to
4 ft subsiding to 1 to 3 ft.
.MONDAY NIGHT...South winds 5 to 10 kt increasing to 10 to 15 kt.
Waves 1 to 2 ft.
.TUESDAY...South winds 10 to 20 kt. Waves 1 to 3 ft.
.WEDNESDAY...Northwest winds 10 to 15 kt becoming north. Waves
1 to 2 ft.

$$

LMZ761-150315-
MAFOR 1421/
MICHIGAN NORTH 11720 11610 13510 12520 11530. Chance of
thunderstorms Saturday afternoon. Waves 1 to 3 feet tonight.
Waves building to 3 to 5 feet Saturday.

MICHIGAN SOUTH 12820 13710 11600 11510 11420. Waves 3 to 5 ft
subsiding to 2 to 4 feet tonight. Waves 1 to 3 feet Saturday.

$$

BMD

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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