Great Lakes Forecast
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FZUS63 KLOT 161339
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
839 AM CDT Sun Jul 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...A trough averaging 29.9 inches and an associated cold
front across the far southern part of the lake this morning will
shift quickly south. Another high of 30.1 inches will build across
the western Great Lakes late tonight into Monday and then move
onward to the Ohio Valley on Tuesday. A trough averaging 29.9
inches will then move from Lake Superior Tuesday and across Lake
Michigan on Wednesday.

LMZ261-362-364-366-563-565-567-868-162130-
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-
839 AM CDT Sun Jul 16 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...North winds 20 to 25 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.TONIGHT...North winds 15 to 25 kt diminishing to 10 to 20 kt late
in the evening, then becoming northeast 10 to 15 kt after midnight.
Waves 3 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
.MONDAY...Northeast winds around 10 kt becoming variable by late
morning. Waves 1 to 3 ft subsiding to around 1 ft.
.MONDAY NIGHT...South winds 10 to 15 kt increasing to 10 to
20 kt after midnight. Waves 1 to 3 ft.
.TUESDAY...South winds 10 to 20 kt. Waves 1 to 3 ft.
.TUESDAY NIGHT...Southwest winds 10 to 20 kt becoming west.
Chance of showers and thunderstorms. Waves 1 to 3 ft.
.WEDNESDAY...Northwest winds 5 to 10 kt becoming east. Waves 1 to
2 ft.
.THURSDAY...Northeast winds 10 to 20 kt becoming northwest 10 to
15 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-162130-
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-
839 AM CDT Sun Jul 16 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...North winds 20 to 25 kt. Waves 3 to 5 ft
building to 5 to 8 ft occasionally to 10 ft.
.TONIGHT...North winds 15 to 25 kt becoming northeast late in the
evening...then diminishing to 10 to 20 kt after midnight and to
10 to 15 kt late. Waves 5 to 8 ft occasionally to 10 ft subsiding
to 3 to 6 ft occasionally to 8 ft.
.MONDAY...East winds 10 to 15 kt becoming north. Waves 3 to 5 ft
subsiding to 1 to 3 ft.
.MONDAY NIGHT...Northeast winds 10 to 15 kt veering to south.
Waves 1 to 3 ft.
.TUESDAY...South winds 10 to 15 kt increasing to 10 to 20 kt.
Waves 1 to 3 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt becoming southwest 10 to
15 kt. Waves 1 to 3 ft.
.WEDNESDAY...Southwest winds 10 to 15 kt becoming south. Waves
1 to 2 ft.
.THURSDAY...Southwest winds 10 to 15 kt becoming northwest.
Chance of showers and thunderstorms. Waves 1 to 3 ft.

$$
LMZ761-162130-
MAFOR 1615/
MICHIGAN NORTH 14830 11820 11120 12110. Waves 4 to 6 feet
occasionally to 8 feet today subsiding to 2 to 4 feet tonight.
Waves 1 to 3 feet Monday morning.

MICHIGAN SOUTH 14830 11130 11120 11110 11210. Waves 3 to 5 feet
building to 5 to 8 feet occasionally to 10 feet today. Waves 5 to
8 feet occasionally to 10 feet subsiding to 3 to 6 feet
occasionally to 8 feet tonight. Waves 3 to 5 feet Monday morning.

$$

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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