Great Lakes Forecast
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541
FZUS63 KLOT 080247
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
847 PM 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 29.7 inches over Lake Superior this
evening will move into Quebec Friday afternoon. New low pressure
of 29.7 inches will move from southern Manitoba Friday afternoon
to central Lake Michigan early Saturday morning and then to Lake
Ontario by Saturday evening. Another weak low pressure is
expected to form near Lake Superior Sunday morning and move to
New England Monday morning as a fourth low forms over the upper
midwest Sunday and moves across the Great Lakes Monday.

LMZ261-362-364-366-563-565-567-868-080900-
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-
847 PM CST Thu Dec 7 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...West winds to 30 kt. Chance of snow showers.
Waves 5 to 8 ft occasionally to 10 ft.
.FRIDAY...West winds 15 to 25 kt diminishing to 10 to 20 kt.
Chance of snow showers. Waves 5 to 8 ft occasionally to 10 ft
subsiding to 4 to 7 ft occasionally to 9 ft.
.FRIDAY NIGHT...West winds 10 to 20 kt becoming northwest late
in the evening...then becoming north after midnight increasing
to 30 kt late. Snow showers. Waves 3 to 5 ft building to 4 to 7
ft occasionally to 9 ft.
.SATURDAY...North gales to 35 kt. Snow showers likely in the
morning. Waves 7 to 10 ft occasionally to 13 ft.
.SATURDAY NIGHT...Northwest winds to 30 kt becoming west 10 to
20 kt overnight. Waves 6 to 9 ft occasionally to 12 ft subsiding
to 4 to 6 ft occasionally to 8 ft.
.SUNDAY...West winds to 30 kt diminishing to 15 to 25 kt. Chance
of snow showers. Waves 4 to 7 ft occasionally to 9 ft.
.SUNDAY NIGHT...Northwest winds 15 to 25 kt becoming north 10 to
20 kt. Chance of snow showers. Waves 4 to 6 ft occasionally to 8
ft subsiding to 2 to 4 ft.
.MONDAY...Northeast winds 10 to 20 kt. Chance of snow showers.
Waves 2 to 4 ft.
.TUESDAY...North winds to 30 kt diminishing to 15 to 25 kt.
Chance of snow showers. Waves 6 to 9 ft occasionally to 12 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-080900-
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-
847 PM CST Thu Dec 7 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...West winds to 30 kt. Slight chance of snow
showers. Waves 5 to 8 ft occasionally to 10 ft.
.FRIDAY...West winds to 30 kt diminishing to 15 to 25 kt.
Chance of snow showers. Waves 5 to 8 ft occasionally to 10 ft.
.FRIDAY NIGHT...West winds to 30 kt diminishing to 10 to 20 kt
after midnight...then becoming northwest to 30 kt late. Snow
showers. Waves subsiding to 4 to 6 ft occasionally to 8 ft.
.SATURDAY...North gales to 35 kt. Snow showers. Waves 8 to 12 ft
occasionally to 16 ft.
.SATURDAY NIGHT...Northwest winds to 30 kt becoming west 10 to
20 kt overnight. Chance of snow showers in the evening. Waves 8
to 11 ft occasionally to 14 ft subsiding to 5 to 8 ft
occasionally to 10 ft.
.SUNDAY...Southwest winds to 30 kt becoming west. Waves 4 to 7 ft
occasionally to 9 ft building to 5 to 8 ft occasionally to 10 ft.
.SUNDAY NIGHT...Northwest 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.
.MONDAY...North winds 10 to 20 kt increasing to 15 to 25 kt. Snow
and rain showers likely. Waves 2 to 4 ft building to 3 to 5 ft.
.TUESDAY...Northwest gales to 35 kt diminishing to 30 kt. Chance
of snow showers. Waves 7 to 10 ft occasionally to 13 ft subsiding
to 6 to 9 ft occasionally to 12 ft.

$$
LMZ761-080900-
MAFOR 0804/
MICHIGAN NORTH 13640 12630 11620 11627 11727. Chance of snow
showers. Waves 5 to 8 ft occasionally to 10 ft tonight. Waves 5
to 8 ft occasionally to 10 ft subsiding to 4 to 7 ft occasionally
to 9 ft Friday. Waves 3 to 5 ft Friday evening.

MICHIGAN SOUTH 14640 12630 12637. Chance of snow showers Friday.
Waves 5 to 8 ft occasionally to 10 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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