Great Lakes Forecast
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000
FZUS63 KLOT 271343
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
843 AM CDT Tue Jun 27 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 30.3 inches extends from the
northern and central Plains to the lower Ohio Valley this morning.
The surface ridge axis will shift over the lake today and then
continue east as the center of the high moves across the Ohio
Valley. Low pressure of 29.4 inches will develop across the
Northern Plains this evening and then track over the northern end
of the lake Wednesday night into Thursday morning. A cold front
trailing from the low will slowly progress down the lake Thursday
into Thursday night while the low weakens north of the Great
Lakes. Another low around 29.6 inches will likely move over the
southern or central portion of the lake on Friday, with its
trailing cold front possibly southeast of the lake by Saturday
morning.

LMZ261-362-364-366-563-565-567-868-272115-
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-
843 AM CDT Tue Jun 27 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...West winds 10 to 15 kt backing to south 10 to 20
kt. Waves 1 to 3 ft.
.TONIGHT...South winds 10 to 20 kt becoming southwest. Waves 2 to
4 ft.
.WEDNESDAY...South winds 15 to 25 kt increasing to 30 kt.
Occasional gale force gusts to 35 kt possible in the afternoon.
Chance of showers and thunderstorms in the morning...then showers
and thunderstorms likely in the afternoon. Waves 2 to 4 ft
building to 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY NIGHT...South winds to 30 kt becoming southwest.
Occasional gale force gusts possible, mainly in the evening.
Showers and thunderstorms in the evening...then chance of showers
and thunderstorms overnight. Waves 7 to 10 ft occasionally to 13
ft.
.THURSDAY...Southwest winds 15 to 25 kt becoming west 10 to
20 kt. Chance of showers and thunderstorms in the morning. Waves
4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
.THURSDAY NIGHT...Northwest winds 10 to 15 kt becoming northeast.
Waves 1 to 3 ft.
.FRIDAY...Northeast winds 10 to 20 kt. Chance of showers and
thunderstorms. Waves 1 to 2 ft.
.SATURDAY...Southwest winds 10 to 15 kt increasing to 10 to
20 kt. Chance of showers and thunderstorms. Waves 1 to 2 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-272115-
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-
843 AM CDT Tue Jun 27 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...West winds 10 to 20 kt backing to south. Waves
2 to 4 ft.
.TONIGHT...South winds 10 to 20 kt. Waves 2 to 4 ft.
.WEDNESDAY...South winds 15 to 25 kt increasing to 30 kt. Chance
of showers and thunderstorms in the afternoon. Waves 3 to 5 ft
building to 5 to 8 ft occasionally to 10 ft.
.WEDNESDAY NIGHT...South winds to 30 kt becoming southwest.
Showers and thunderstorms in the evening...then showers and
thunderstorms likely overnight. Waves 6 to 9 ft occasionally to
12 ft.
.THURSDAY...Southwest winds 15 to 25 kt diminishing to 10 to
20 kt. Chance of showers and thunderstorms. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 2 to 4 ft.
.THURSDAY NIGHT...West winds 10 to 15 kt backing to south 10 to
20 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.
.FRIDAY...Southeast winds 15 to 25 kt veering to west. Showers
and thunderstorms likely. Waves 2 to 4 ft.
.SATURDAY...West winds 10 to 15 kt becoming southwest 10 to
20 kt. Waves 1 to 2 ft.

$$
LMZ761-272115-
MAFOR 2715/
MICHIGAN NORTH 11610 11510 12420 13520 11430. Chance of showers
and thunderstorms Wednesday morning. Waves 1 to 3 feet today.
Waves 2 to 4 feet tonight. Waves 2 to 4 feet building to 3 to 5
feet Wednesday morning.

MICHIGAN SOUTH 11620 11520 14420 11420 11430. Waves 2 to 4 feet
today and tonight. Waves 3 to 5 feet Wednesday morning.

$$

BMD

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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