Great Lakes Forecast
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FZUS63 KLOT 180145
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
845 PM CDT Mon Jul 17 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 30.0 inches over the eastern Great
Lakes will move to the east coast by Tuesday night. A trough of
low pressure averaging 29.9 inches will then move from Lake
Superior Tuesday and across Lake Michigan on Wednesday.

LMZ261-362-364-366-563-565-567-868-180930-
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-
845 PM CDT Mon Jul 17 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Light and variable winds in the evening
becoming south 10 to 15 kt then increasing to 10 to 20 kt late.
Waves nearly calm building to 1 to 2 ft.
.TUESDAY...South winds 10 to 20 kt. Slight chance of showers and
thunderstorms in the afternoon. Waves 2 to 4 ft.
.TUESDAY NIGHT...Southwest winds 15 to 25 kt diminishing to 10 to
20 kt late in the evening...then becoming west after midnight
becoming northwest 10 to 15 kt late. Chance of showers and
thunderstorms. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.WEDNESDAY...North winds 10 to 15 kt becoming northwest 5 to
10 kt. Waves 1 to 2 ft.
.WEDNESDAY NIGHT...South winds 5 to 10 kt increasing to 10 to
15 kt. Chance of showers and thunderstorms overnight. Waves 1 ft
or less.
.THURSDAY...Southwest winds 10 to 15 kt. Chance of showers and
thunderstorms in the morning. Waves 1 ft or less.
.THURSDAY NIGHT...West winds 5 to 10 kt becoming southwest. Waves
1 ft or less.
.FRIDAY...South winds 5 to 10 kt increasing to 10 to 15 kt. Waves
1 ft or less.
.SATURDAY...East winds 10 to 15 kt. Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-180930-
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-
845 PM CDT Mon Jul 17 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Variable winds less than 10 kt becoming
southwest. Waves 1 ft or less.
.TUESDAY...Southwest winds 10 to 15 kt becoming south 10 to
20 kt. Waves 1 to 3 ft.
.TUESDAY NIGHT...South winds 10 to 20 kt becoming southwest 10 to
15 kt. Chance of showers and thunderstorms overnight. Waves 1 to
3 ft.
.WEDNESDAY...Northwest winds 10 to 15 kt becoming north. Chance
of showers and thunderstorms in the morning. Waves 1 to 2 ft.
.WEDNESDAY NIGHT...Northeast winds 5 to 10 kt veering to south
10 to 15 kt. Chance of showers and thunderstorms overnight. Waves
1 to 2 ft.
.THURSDAY...South winds 10 to 15 kt becoming southwest. Chance of
showers and thunderstorms. Waves 1 ft or less.
.THURSDAY NIGHT...West winds 5 to 10 kt backing to southeast.
Chance of showers and thunderstorms. Waves 1 ft or less.
.FRIDAY...East winds 5 to 10 kt increasing to 10 to 15 kt. Chance
of showers and thunderstorms. Waves 1 to 2 ft.
.SATURDAY...Southeast winds 10 to 15 kt. Chance of showers and
thunderstorms. Waves 1 to 3 ft.

$$
LMZ761-180930-
MAFOR 1803/
MICHIGAN NORTH 11900 11410 14420 11420 11520. Waves nearly calm
building to 1 to 2 ft tonight and to 2 to 4 ft Tuesday.

MICHIGAN SOUTH 12900 11500 12510 13420. Waves 1 ft or less
tonight and 1 to 3 ft Tuesday.

$$

- Izzi

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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