Great Lakes Forecast
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000
FZUS63 KLOT 070843
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
243 AM CST Thu Dec 7 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...Low pressure of 29.2 inches is located just east
of James Bay early this morning and will merge with another low
over far northern Quebec today. Another low of 29.6 inches will
form over Lake Superior early Friday and shift to Quebec Friday
night. Yet another low of 29.7 inches will form over Lake Michigan
Friday night and move to the eastern Great Lakes Saturday. Low
pressure of 29.8 inches will move from northern Manitoba Saturday
evening and across Ontario Sunday.


LMZ261-362-364-366-563-565-567-868-071715-
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-
243 AM CST Thu Dec 7 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...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 6 ft occasionally to 8 ft.
.TONIGHT...West winds to 30 kt. Slight chance of snow showers in
the evening...then chance of snow showers overnight. Waves 4 to
6 ft occasionally to 8 ft.
.FRIDAY...West winds 15 to 25 kt diminishing to 10 to 20 kt.
Chance of snow showers. Waves 4 to 7 ft occasionally to 9 ft
subsiding to 3 to 5 ft.
.FRIDAY NIGHT...Northwest winds 10 to 20 kt becoming north 15 to
25 kt. Snow showers likely. Waves 3 to 5 ft.
.SATURDAY...North winds to 30 kt. Chance of snow showers. Waves
4 to 7 ft occasionally to 9 ft building to 7 to 10 ft
occasionally to 13 ft.
.SATURDAY NIGHT...Northwest winds 15 to 25 kt becoming west 10 to
20 kt. Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to
8 ft occasionally to 10 ft.
.SUNDAY...West winds 15 to 25 kt increasing to 30 kt. Chance of
snow showers. Waves 3 to 5 ft building to 4 to 7 ft occasionally
to 9 ft.
.MONDAY...North winds 15 to 25 kt. Chance of snow showers. Waves
4 to 7 ft occasionally to 9 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-071715-
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-
243 AM CST Thu Dec 7 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Northwest winds to 30 kt becoming west 15 to 25 kt. Snow
this morning...then scattered snow showers this afternoon. Waves
6 to 9 ft occasionally to 12 ft.
.TONIGHT...West winds 15 to 25 kt increasing to 30 kt. Scattered
snow showers in the evening...then slight chance of snow showers
overnight. Waves 4 to 7 ft occasionally to 9 ft.
.FRIDAY...West winds to 30 kt diminishing to 15 to 25 kt. Chance
of snow showers in the afternoon. Waves 5 to 8 ft occasionally to
10 ft.
.FRIDAY NIGHT...West winds to 30 kt diminishing to 15 to 25 kt.
Snow showers. Waves 4 to 6 ft occasionally to 8 ft subsiding to
3 to 5 ft.
.SATURDAY...North winds to 30 kt becoming northwest gales to
35 kt. Snow showers likely in the morning...then chance of snow
showers in the afternoon. Waves 6 to 9 ft occasionally to 12 ft
building to 10 to 14 ft occasionally to 18 ft.
.SATURDAY NIGHT...Northwest winds to 30 kt diminishing to 10 to
20 kt overnight. Chance of snow showers. Waves 10 to 14 ft
occasionally to 18 ft subsiding to 7 to 10 ft occasionally to
13 ft.
.SUNDAY...West winds 15 to 25 kt increasing to 30 kt. Waves 4 to
7 ft occasionally to 9 ft.
.MONDAY...Northwest winds 10 to 20 kt becoming northeast to 30 kt
in the afternoon. 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.

$$

LMZ761-071715-
MAFOR 0710/
MICHIGAN NORTH 13740 11730 11630 13640. Chance of snow showers
today. Chance of snow showers after midnight tonight. Waves 5 to 8
feet occasionally to 10 feet subsiding to 4 to 6 feet
occasionally to 8 feet today. Waves 4 to 6 feet occasionally to 8
feet tonight.

MICHIGAN SOUTH 13747 11730 13630 11640. Scattered snow showers
early this afternoon and evening. Waves 6 to 9 feet occasionally
to 12 feet today. Waves 4 to 7 feet occasionally to 9 feet
tonight.

$$

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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