Great Lakes Forecast
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000
FZUS63 KLOT 131946
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
246 PM CDT Thu Jul 13 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 eastern
Michigan this afternoon and will slowly move to the eastern Great
Lakes Friday. High pressure of 30.2 inches will build across the
Upper Midwest Friday then 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.

LMZ261-362-364-366-563-565-567-868-140330-
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-
246 PM CDT Thu Jul 13 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Northeast winds 10 to 20 kt becoming northwest. Chance
of showers this evening...then slight chance of showers overnight.
Waves 2 to 4 ft.
.FRIDAY...Northwest winds 10 to 20 kt becoming north. Slight
chance of showers in the morning. Waves 2 to 4 ft.
.FRIDAY NIGHT...Northwest winds 10 to 15 kt becoming west. Waves
1 to 3 ft.
.SATURDAY...Southwest winds 10 to 20 kt increasing to 15 to
25 kt. Waves 2 to 4 ft.
.SATURDAY NIGHT...West winds 10 to 20 kt veering to north 15 to
25 kt. Chance of showers and thunderstorms in the evening. Waves
2 to 4 ft.
.SUNDAY...North winds 15 to 25 kt. Waves 4 to 7 ft occasionally
to 9 ft.
.SUNDAY NIGHT...North winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft.
.MONDAY...North winds 10 to 15 kt becoming northwest 5 to 10 kt.
Waves 1 to 3 ft.
.TUESDAY...Southwest winds 15 to 25 kt. Chance of showers and
thunderstorms. Waves 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-140330-
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-
246 PM CDT Thu Jul 13 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Variable winds around 10 kt late this afternoon
becoming northwest 10 to 20 kt this evening...then north after
midnight. Slight chance of showers this evening. Waves 2 to 4 ft.
.FRIDAY...North winds 10 to 20 kt. Waves 2 to 4 ft.
.FRIDAY NIGHT...North winds 10 to 20 kt becoming northwest 10 to
15 kt. Waves 2 to 4 ft.
.SATURDAY...West winds 10 to 15 kt becoming southwest 10 to
20 kt. Waves 1 to 3 ft.
.SATURDAY NIGHT...Southwest winds 10 to 20 kt becoming west 15 to
25 kt. Chance of showers and thunderstorms overnight. Waves 2 to
4 ft.
.SUNDAY...North winds 20 to 25 kt. Waves 4 to 6 ft occasionally
to 8 ft building to 4 to 7 ft occasionally to 9 ft.
.SUNDAY NIGHT...North winds 20 to 25 kt becoming northeast 10 to
20 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to 6
ft occasionally to 8 ft.
.MONDAY...North winds 10 to 15 kt diminishing to 5 to 10 kt.
Waves 2 to 4 ft subsiding to 1 to 3 ft.
.TUESDAY...Southwest winds 10 to 20 kt. Waves 2 to 4 ft.

$$

LMZ761-140330-
MAFOR 1321/
MICHIGAN NORTH 11120 12820 14720 11820. Chance of showers
this evening. Waves 2 to 4 feet.

MICHIGAN SOUTH 11900 11710 11720 14820 11820. Waves 2 to 4 feet.

$$

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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