Great Lakes Forecast
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000
FZUS63 KMKX 121349
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
849 AM CDT Fri Jul 12 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...

High pressure of 30.0 inches over southern Lake Michigan extending
into central Illinois will continue to drift southeast today.
South to southwest winds will increase today into this evening,
especially over northern portions of the lake.

A cold front will move south across the lake later tonight into
Saturday. This will bring scattered thunderstorms to northern Lake
Michigan late this afternoon and evening, with a decreasing chance
farther south. Small chances for thunderstorms will continue over
southern Lake Michigan on Saturday. Winds will shift north to
northeast behind the front.

High pressure of 30.1 inches over the region Saturday night
into Sunday should then bring lighter winds. Southwest winds
should then gradually increase early next week.

LMZ261-362-364-366-563-565-567-868-122130-
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-
849 AM CDT Fri Jul 12 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Southwest winds 5 to 10 kt increasing to 10 to
20 kt late this morning, then becoming south 15 to 25 kt early
this afternoon becoming southwest to 30 kt late. Waves 1 to 2 ft
building to 4 to 6 ft occasionally to 8 ft.
.TONIGHT...Southwest winds 15 to 25 kt diminishing to 10 to 20 kt
after midnight, then becoming west 10 to 15 kt late. Scattered
showers and thunderstorms this evening. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft.
.SATURDAY...Northwest winds 10 to 15 kt becoming north 10 to
20 kt. Waves 1 to 3 ft subsiding to 1 to 2 ft.
.SATURDAY NIGHT...Northeast winds 10 to 15 kt becoming east.
Waves 1 to 2 ft.
.SUNDAY...South winds 5 to 10 kt becoming southwest. Waves 1 ft
or less.
.SUNDAY NIGHT...South winds 5 to 10 kt increasing to 10 to 15 kt.
Waves 1 to 2 ft.
.MONDAY...South winds 10 to 20 kt becoming southwest 15 to 25 kt.
Waves 1 to 3 ft building to 3 to 5 ft.
.TUESDAY...Southwest winds 15 to 25 kt. Chance of showers. Waves
3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-122130-
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-
849 AM CDT Fri Jul 12 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...North winds 5 to 15 kt veering to east late this
morning, then veering to south 10 to 20 kt this afternoon. Waves
1 to 3 ft.
.TONIGHT...South winds 10 to 20 kt becoming southwest 10 to
15 kt. Slight chance of showers and thunderstorms overnight.
Waves 2 to 4 ft.
.SATURDAY...West winds 10 to 15 kt veering to north 10 to 20 kt.
Slight chance of showers and thunderstorms. Waves 1 to 3 ft.
.SATURDAY NIGHT...Northeast winds 10 to 15 kt becoming east 5 to
10 kt. Waves 1 to 2 ft.
.SUNDAY...East winds 5 to 10 kt becoming southeast 10 to 15 kt.
Waves 1 ft or less.
.SUNDAY NIGHT...Southeast winds 5 to 10 kt becoming south. Waves
1 to 2 ft.
.MONDAY...South winds 10 to 20 kt. Waves 1 to 3 ft building to
2 to 4 ft.
.TUESDAY...Southwest winds 10 to 20 kt becoming south. Waves 3 to
5 ft.

$$

LMZ761-122130-
MAFOR 1215/
MICHIGAN NORTH 11520 11430 12530 11520 11610 11710 11810. Waves 2
to 4 ft building to 4 to 6 ft occasionally to 8 ft this
afternoon. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft tonight. Waves 2 to 4 ft Saturday morning.

MICHIGAN SOUTH 11310 13420 11520 11510 12610. Waves 2 to 4 ft
this afternoon and tonight. Waves 1 to 3 ft Saturday 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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