Great Lakes Forecast
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000
FZUS63 KLOT 160155
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
855 PM CDT Sat Jul 15 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 over central Illinois
and Indiana this evening will spread southeast across the Ohio
Valley overnight into Sunday. A trough averaging 29.9 inches from
central Wisconsin to Lake Huron will sag south across Lake
Michigan overnight. Another high of 30.1 inches will build across
the western Great Lakes Sunday night into Monday and then move to
the upper Ohio Valley Tuesday. A trough averaging 29.9 inches
will move from Lake Superior Tuesday and across Lake Michigan
on Wednesday.

LMZ261-362-364-366-563-565-567-868-160930-
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-
855 PM CDT Sat Jul 15 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Southwest winds 10 to 20 kt veering to north
20 to 25 kt. Chance of showers and thunderstorms this evening.
Waves 3 to 5 ft.
.SUNDAY...North winds 20 to 25 kt increasing to 30 kt. Waves 4 to
7 ft occasionally to 9 ft.
.SUNDAY NIGHT...North winds 20 to 25 kt becoming northeast 10 to
15 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4
ft.
.MONDAY...Northeast winds 5 to 10 kt backing to northwest. Waves
1 to 3 ft.
.MONDAY NIGHT...South winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 to 3 ft.
.TUESDAY...Southwest winds 10 to 20 kt becoming south. Waves 2 to
4 ft.
.TUESDAY NIGHT...Southwest winds 10 to 20 kt diminishing to 10 to
15 kt. Chance of showers and thunderstorms. Waves 2 to 4 ft.
.WEDNESDAY...South winds 10 to 20 kt. Chance of showers and
thunderstorms. Waves 2 to 4 ft.
.THURSDAY...Southwest winds 10 to 20 kt becoming northwest 10 to
15 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-160930-
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-
855 PM CDT Sat Jul 15 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Southwest winds 10 to 20 kt veering to
north 15 to 25 kt. Chance of showers and thunderstorms. Waves 2
to 4 ft.
.SUNDAY...North winds 20 to 25 kt increasing to 30 kt. Waves 3 to
5 ft building to 5 to 8 ft occasionally to 10 ft.
.SUNDAY NIGHT...North winds 20 to 25 kt becoming northeast late
in the evening...then diminishing to 10 to 20 kt after midnight
becoming northeast 10 to 20 kt late. Waves 5 to 8 ft occasionally
to 10 ft subsiding to 3 to 5 ft.
.MONDAY...Northeast winds 10 to 15 kt becoming north. Waves 2 to
4 ft subsiding to 1 to 3 ft.
.MONDAY NIGHT...Northeast winds 5 to 10 kt veering to south.
Waves 1 to 2 ft.
.TUESDAY...South winds 10 to 20 kt. Waves 2 to 4 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt becoming southwest.
Waves 2 to 4 ft.
.WEDNESDAY...Southwest winds 10 to 20 kt becoming south. Waves
1 to 3 ft.
.THURSDAY...Southwest winds 10 to 20 kt becoming west 10 to
15 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.

$$
LMZ761-160930-
MAFOR 1603/
MICHIGAN NORTH 10520 14830 12840 12830. Chance of showers and
thunderstorms this evening. Waves 3 to 5 feet tonight building to
4 to 7 feet occasionally to 9 feet Sunday. Waves 4 to 6 feet
occasionally to 8 feet Sunday evening.

MICHIGAN SOUTH 11520 11520 19720 11830 19620 12830 12840 11830.
Chance of showers and thunderstorms tonight. Waves 2 to 4 feet
overnight. Waves 3 to 5 feet building to 5 to 8 feet occasionally
to 10 feet Sunday 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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