Great Lakes Forecast
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000
FZUS63 KLOT 210152
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
852 PM CDT Tue Jun 20 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...A large area of high pressure averaging 30.0 inches
over the upper Mississippi Valley will spread east over the
western Great Lakes tonight. As this high pushes east of Lake
Michigan on Wednesday, a 29.4 inch low will move from Saskatchewan
to Quebec by Friday afternoon. An associated cold front will
sweep across the lake Thursday night and a secondary surge of
colder air will push across the lake Friday night.

LMZ261-362-364-366-563-565-567-868-210800-
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-
852 PM CDT Tue Jun 20 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...West winds 10 to 15 kt. Waves 1 to 2 ft.
.WEDNESDAY...West winds 5 to 10 kt becoming south 10 to 15 kt.
Waves 1 to 2 ft.
.WEDNESDAY NIGHT...South winds 10 to 20 kt increasing to 15 to 25
kt. Showers and thunderstorms likely overnight. Waves 2 to 4 ft.
.THURSDAY...Southwest winds 15 to 25 kt diminishing to 10 to 20
kt. Chance of showers and thunderstorms. Waves 3 to 5 ft subsiding
to 1 to 3 ft.
.THURSDAY NIGHT...Southwest winds 10 to 15 kt becoming west 10 to
20 kt. Chance of showers and thunderstorms. Waves 1 to 3 ft.
.FRIDAY...West winds 10 to 20 kt. Waves 1 to 3 ft.
.FRIDAY NIGHT...Northwest winds 10 to 15 kt increasing to 10 to
20 kt. Waves 1 to 3 ft.
.SATURDAY...Northwest winds 10 to 20 kt. Waves 1 to 3 ft.
.SUNDAY...North winds 15 to 25 kt becoming northwest 10 to 20 kt.
Waves 2 to 4 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-210800-
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-
852 PM CDT Tue Jun 20 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...West winds around 10 kt. Waves 1 to 3 ft.
.WEDNESDAY...North winds 5 to 10 kt veering to southeast 10 to
15 kt. Waves 1 to 2 ft.
.WEDNESDAY NIGHT...Southeast winds 10 to 20 kt becoming south
15 to 25 kt. Chance of showers and thunderstorms in the evening...
then showers and thunderstorms likely overnight. Waves 2 to 4 ft.
.THURSDAY...Southwest winds 15 to 25 kt diminishing to 10 to 20
kt. Chance of showers and thunderstorms. Waves 3 to 5 ft.
.THURSDAY NIGHT...West winds 10 to 20 kt becoming southwest 15
to 25 kt. Showers and thunderstorms likely. Waves 1 to 3 ft.
.FRIDAY...Northwest winds 10 to 20 kt becoming west. Chance of
showers in the morning. Waves 1 to 3 ft.
.FRIDAY NIGHT...Northwest winds 10 to 20 kt. Waves 1 to 3 ft.
.SATURDAY...Northwest winds 10 to 20 kt. Waves 1 to 3 ft.
.SUNDAY...Northwest winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 2 to 4 ft.

$$

LMZ761-210800-
MAFOR 2103/
MICHIGAN NORTH 12610 12600 12500 11410 11420. Waves 1 to 2 ft.

MICHIGAN SOUTH 13610 19900 12800 11900 11310 11320. Waves 1 to
3 ft.

$$

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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