Great Lakes Forecast
Issued by NWS

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586
FZUS63 KMKX 171301 AAA
GLFLM

OPEN LAKE FORECAST for Lake Michigan...UPDATED
National Weather Service Milwaukee/Sullivan WI
801 AM CDT Wed Jul 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...

High pressure of 30.1 inches over Ontario will keep the areas over
the lake dry through the day today. Winds will be light and
variable to start but will turn to the south by the afternoon. A
couple low pressure areas around 29.3 inches will then move east
across southern Canada for late Wednesday night through Friday.
This will bring modest south to southwesterly flow to Lake MI.
Some storms/showers are likely over the southern lake by Thursday
morning.

LMZ261-362-364-366-563-565-567-868-171515-
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-
801 AM CDT Wed Jul 17 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON...

.TODAY...Northeast winds 10 to 15 kt. Areas of dense fog. Waves
1 to 2 ft.
.TONIGHT...Northeast winds 10 to 15 kt becoming east 10 to 20 kt
late in the evening, then becoming southeast after midnight
becoming south 15 to 25 kt late. Chance of showers and
thunderstorms overnight. Waves 1 to 2 ft building to 2 to 4 ft.
.THURSDAY...South winds 15 to 25 kt. Chance of showers and
thunderstorms. Waves 4 to 6 ft occasionally to 8 ft.
.THURSDAY NIGHT...Southwest winds 15 to 25 kt. Chance of showers
and thunderstorms. Waves 4 to 6 ft occasionally to 8 ft subsiding
to 3 to 5 ft.
.FRIDAY...Southwest winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 3 to 5 ft.
.FRIDAY NIGHT...Southwest winds 15 to 25 kt becoming west 10 to
20 kt. Chance of showers and thunderstorms. Waves 3 to 5 ft.
.SATURDAY...Northwest winds 10 to 15 kt becoming north 10 to
20 kt. Waves 2 to 4 ft.
.SUNDAY...Northeast winds 10 to 20 kt becoming north. Chance of
showers and thunderstorms. Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-171515-
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-
801 AM CDT Wed Jul 17 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...DENSE FOG ADVISORY IN EFFECT UNTIL 1 PM CDT THIS AFTERNOON...

.TODAY...Northeast winds 5 to 10 kt becoming north. Areas of
dense fog. Waves 1 ft or less.
.TONIGHT...Northeast winds 5 to 10 kt becoming southeast late in
the evening, then increasing to 10 to 20 kt after midnight
becoming south late. Chance of showers and thunderstorms
overnight. Waves 1 to 2 ft building to 1 to 3 ft.
.THURSDAY...South winds 15 to 25 kt. Chance of showers and
thunderstorms in the morning, then chance of thunderstorms in the
afternoon. Waves 3 to 5 ft.
.THURSDAY NIGHT...Southwest winds 10 to 20 kt increasing to 15 to
25 kt. Waves 3 to 5 ft.
.FRIDAY...Southwest winds 10 to 20 kt increasing to 15 to 25 kt.
Waves 3 to 5 ft.
.FRIDAY NIGHT...Southwest winds 15 to 25 kt. Waves 3 to 5 ft.
.SATURDAY...West winds 10 to 20 kt becoming northwest. Waves 2 to
4 ft.
.SUNDAY...Northeast winds 10 to 15 kt becoming north 10 to 20 kt.
Chance of showers and thunderstorms. Waves 1 to 3 ft.

$$

LMZ761-171515-
MAFOR 1709/
MICHIGAN NORTH 11110 11114 11104 12110 11210 11320 11330. Waves 1
to 3 ft today. Waves 2 to 4 ft tonight.

MICHIGAN SOUTH 11100 11104 11804 12800 11200 11300 11320. Waves 1
to 3 ft.

$$
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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