Great Lakes Forecast
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FZUS63 KLOT 131355
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
855 AM CDT Sun Aug 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...High pressure of 30.1 inches over southern Lake
Michigan this morning will gradually spread eastward to New
England by Monday. Meanwhile, low pressure of 29.7 inches over
South Dakota will move east to southern Minnesota Monday. Another
low of 29.5 inches will develop over eastern Colorado Tuesday and
track to western Lake Superior Wednesday night. This low pressure
area will then move northeast into Ontario as an associated cold
front sweeps southeast across Lake Michigan Thursday afternoon and
evening.

LMZ261-362-364-366-563-565-132130-
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-
855 AM CDT Sun Aug 13 2017

TWO RIVERS WI TO MANISTEE MI NORTH...

.REST OF TODAY...Southwest winds 5 to 10 kt increasing to 10 to
20 kt. Waves 1 to 3 ft.
.TONIGHT...Southwest winds 10 to 20 kt diminishing to 5 to 10 kt.
Waves 1 to 3 ft.
.MONDAY...Southwest winds 5 to 10 kt. Waves subsiding to 1 to 2
ft.
.MONDAY NIGHT...Variable winds 5 to 10 kt becoming northeast.
Waves 1 ft or less.
.TUESDAY...Northeast winds 5 to 10 kt increasing to 10 to 15 kt.
Waves 1 ft or less.
.TUESDAY NIGHT...Northeast winds 10 to 15 kt becoming east. Waves
1 to 2 ft.
.WEDNESDAY...Southeast winds 10 to 15 kt increasing to 10 to
20 kt. Chance of showers. Waves 1 to 3 ft.
.THURSDAY...South winds 10 to 20 kt becoming west. Chance of
showers. Waves 1 to 3 ft.

$$

LMZ080-567-669-671-673-675-777-779-868-870-872-874-876-878-132130-
Lake Michigan from Michigan City IN to St. Joseph MI 5 NM
offshore to Mid Lake-
Lake Michigan from Two Rivers to Sheboygan WI 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 Pentwater to Manistee MI 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 AM CDT Sun Aug 13 2017

TWO RIVERS WI TO MANISTEE MI SOUTH...

.REST OF TODAY...Variable winds 5 to 10 kt. Waves around 1 ft.
.TONIGHT...Variable winds 5 to 10 kt becoming southeast 10 to 15
kt then becoming south. Waves 1 ft or less.
.MONDAY...South winds 5 to 10 kt becoming southeast. Waves 1 ft
or less.
.MONDAY NIGHT...East winds 5 to 10 kt. Chance of showers. Waves
1 ft or less.
.TUESDAY...East winds 5 to 10 kt becoming northeast 10 to 15 kt.
Waves 1 to 2 ft.
.TUESDAY NIGHT...East winds 10 to 15 kt becoming southeast. Waves
1 to 2 ft.
.WEDNESDAY...Southeast winds 10 to 20 kt. Chance of showers and
thunderstorms. Waves 2 to 4 ft.
.THURSDAY...Southwest winds 10 to 20 kt becoming west. Waves 1 to
3 ft.

$$
LMZ761-132130-
MAFOR 1315/
MICHIGAN NORTH 12510 14520 11510 11400. Waves 1 to 3 feet.

MICHIGAN SOUTH 14900 13310 11400. Waves 1 foot or less.

$$

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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