Great Lakes Forecast
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213
FZUS63 KMKX 171344
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
844 AM CDT Sat Aug 17 2019

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 29.7 inches over northern Lake Michigan will
steadily move to the east today while weak high pressure of 29.9
inches over southern Lake Michigan will also move off to the east
today. Lighter winds this morning will eventually become
predominately out of the south to southeast this afternoon and
tonight ahead of an approaching cold front. This front will pass
across Lake Michigan on Sunday bringing an increase in
southwesterly winds. There will be periodic chances for showers
and storms this weekend, with the better chances later tonight
and Sunday morning.

High pressure of 30.0 inches will move into the region on Monday,
before quickly shifting east of the area Tuesday.

LMZ261-362-364-366-563-565-567-868-172115-
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-
844 AM CDT Sat Aug 17 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...West to southwest winds 5 to 15 kt becoming
southwest 10 to 15 kt. Waves 1 to 2 ft.
.TONIGHT...South winds 10 to 15 kt. Slight chance of showers and
thunderstorms overnight. Waves 1 to 2 ft.
.SUNDAY...South winds 10 to 20 kt becoming southwest. Showers
likely with a chance of thunderstorms in the morning, then chance
of showers and thunderstorms in the afternoon. Waves 1 to 3 ft
building to 3 to 5 ft.
.SUNDAY NIGHT...Southwest winds 10 to 20 kt becoming northwest
10 to 15 kt. Chance of showers and thunderstorms. Waves 3 to 5 ft
subsiding to 1 to 3 ft.
.MONDAY...Northwest winds 5 to 10 kt becoming west. Waves 1 to
2 ft.
.MONDAY NIGHT...Southwest winds 5 to 10 kt. Waves 1 to 2 ft.
.TUESDAY...Southwest winds 5 to 10 kt increasing to 10 to 15 kt.
Waves 1 to 2 ft.
.WEDNESDAY...North winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-172115-
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-
844 AM CDT Sat Aug 17 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...West to southwest winds 5 to 15 kt backing to
south 10 to 15 kt. Chance of showers and thunderstorms this
afternoon. Waves 1 to 2 ft.
.TONIGHT...Southeast winds 10 to 15 kt becoming south 10 to
20 kt. Slight chance of showers and thunderstorms in the evening,
then chance of showers and thunderstorms overnight. Waves 1 to
2 ft.
.SUNDAY...South winds to 30 kt becoming southwest 10 to 20 kt.
Showers likely with a chance of thunderstorms in the morning,
then chance of showers and thunderstorms in the afternoon. Waves
3 to 5 ft.
.SUNDAY NIGHT...Southwest winds 10 to 15 kt becoming west. Chance
of showers and thunderstorms. Waves 2 to 4 ft subsiding to 1 to
3 ft.
.MONDAY...North winds 10 to 15 kt diminishing to 5 to 10 kt.
Waves 1 to 2 ft.
.MONDAY NIGHT...East winds 5 to 10 kt becoming southeast. Waves
1 ft or less.
.TUESDAY...South winds 5 to 10 kt becoming southwest. Waves 1 ft
or less.
.WEDNESDAY...North winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 2 to 4 ft.

$$

LMZ761-172115-
MAFOR 1715/
MICHIGAN NORTH 11610 11510 14410 11410 11426. Chance of
thunderstorms Sunday morning. Waves 1 to 3 ft this afternoon and
tonight. Waves 2 to 4 ft Sunday morning.

MICHIGAN SOUTH 11500 11410 11310 11300 12410 11430 11536. Chance
of showers this afternoon. Chance of showers and thunderstorms
overnight. Chance of thunderstorms Sunday morning. Waves 1 to 3
ft this afternoon and tonight. Waves 2 to 4 ft Sunday morning.

$$
MBK

Experimental modernized open lake forecast is available online at
weather.gov/mkx/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes



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