Great Lakes Forecast
Issued by NWS

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FZUS63 KLOT 062039
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
239 PM CST Wed Dec 6 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...Deep low pressure of 28.8 inches is located just west
of James Bay this morning. The low will slowly shift across James
Bay through midday then lift to far northern Quebec tonight.
Another low of 29.7 inches will form over Lake Superior early
Friday and shift to Lake Huron Friday night into Saturday. Another
low of 29.7 inches will move from northern Manitoba Saturday
night to the central Great Lakes Sunday night.

LMZ261-362-364-366-563-565-567-868-070430-
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-
239 PM CST Wed Dec 6 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TONIGHT...Northwest winds to 30 kt. Chance of snow showers.
Waves 6 to 9 feet occasionally to 12 feet.
.THURSDAY...Northwest winds to 30 kt becoming west 15 to 25 kt.
Chance of snow showers. Waves 5 to 8 ft occasionally to 10 ft
subsiding to 4 to 7 ft occasionally to 9 ft.
.THURSDAY NIGHT...West winds 15 to 25 kt. Chance of snow showers
overnight. Waves 4 to 6 ft occasionally to 8 ft.
.FRIDAY...West winds 15 to 25 kt becoming northwest. Chance of
snow showers in the morning...then snow showers likely in the
afternoon. Waves 4 to 7 ft occasionally to 9 ft.
.FRIDAY NIGHT...Northwest winds 10 to 20 kt. Chance of snow in
the evening...then snow likely overnight. Waves 3 to 5 ft
subsiding to 1 to 3 ft.
.SATURDAY...North winds to 30 kt increasing to gales to 35 kt.
Chance of snow in the morning...then chance of snow showers in
the afternoon. Waves 4 to 7 ft occasionally to 9 ft building to
7 to 10 ft occasionally to 13 ft.
.SATURDAY NIGHT...North gales to 35 kt becoming northwest 15 to
25 kt overnight. Chance of snow showers. Waves 7 to 10 ft
occasionally to 13 ft.
.SUNDAY...West winds 15 to 25 kt becoming southwest to 30 kt.
Chance of snow showers. Waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft.
.MONDAY...Northwest winds to 30 kt becoming north. Chance of snow
showers. Waves 4 to 7 ft occasionally to 9 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-070430-
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-
239 PM CST Wed Dec 6 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TONIGHT...Northwest winds to 30 kt. Chance of snow showers this
evening...then chance of flurries overnight. Waves 7 to 10 ft
occasionally to 13 ft.
.THURSDAY...Northwest winds to 30 kt becoming west 15 to 25 kt.
Chance of snow showers. Waves 6 to 9 ft occasionally to 12 ft.
.THURSDAY NIGHT...West winds 15 to 25 kt. Waves 4 to 7 ft
occasionally to 9 ft.
.FRIDAY...West winds to 30 kt. Chance of snow showers in the
afternoon. Waves 5 to 8 ft occasionally to 10 ft.
.FRIDAY NIGHT...West winds 15 to 25 kt. Chance of snow in the
evening...then snow likely overnight. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft.
.SATURDAY...Northwest winds to 30 kt becoming north gales to
35 kt. Snow likely in the morning...then snow showers likely in
the afternoon. Waves 5 to 8 ft occasionally to 10 ft building to
8 to 12 ft occasionally to 16 ft.
.SATURDAY NIGHT...North gales to 35 kt diminishing to 30 kt.
Chance of snow showers. Waves 8 to 12 ft occasionally to 16 ft
subsiding to 7 to 10 ft occasionally to 13 ft.
.SUNDAY...West winds 10 to 20 kt becoming southwest to 30 kt in
the afternoon. Waves 4 to 7 ft occasionally to 9 ft subsiding to
4 to 6 ft occasionally to 8 ft.
.MONDAY...Northwest winds 15 to 25 kt increasing to 30 kt. Chance
of snow showers and rain. Waves 4 to 6 ft occasionally to 8 ft
building to 4 to 7 ft occasionally to 9 ft.

$$

LMZ761-070430-
MAFOR 0622/
MICHIGAN NORTH 11640 15740 11730. Chance of snow showers. Waves 6
to 9 feet occasionally to 12 feet tonight. Waves 5 to 8 feet
occasionally to 10 feet subsiding to 4 to 7 feet occasionally to 9
feet Thursday.

MICHIGAN SOUTH 11640 15740 11630. Chance of snow showers this
evening and Thursday. Waves 7 to 10 feet occasionally to 13 feet
tonight. Waves 6 to 9 feet occasionally to 12 feet Thursday.

$$

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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