Great Lakes Forecast
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FZUS63 KLOT 081426
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
826 AM CST Fri Dec 8 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 the northern Great
Lakes will move into Quebec this afternoon. New low pressure of
29.7 inches will move from southern Manitoba this afternoon to
central Lake Michigan early Saturday morning and then to eastern
Great Lakes Saturday afternoon. 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.

LMZ261-362-364-563-082215-
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 Rock Island Passage to Sturgeon Bay WI-
826 AM CST Fri Dec 8 2017

STURGEON BAY WI TO POINT BETSIE MI NORTH...

.REST OF TODAY...West winds 15 to 25 kt. Chance of snow showers.
Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft late.
.TONIGHT...Northwest winds 10 to 20 kt becoming north to 30 kt
overnight. Snow likely in the evening...then chance of snow
overnight. Waves 2 to 4 ft building to 4 to 6 ft occasionally to
8 ft late.
.SATURDAY...North gales to 35 kt. Chance of snow in the morning.
Waves 4 to 7 ft occasionally to 9 ft building to 6 to 9 ft
occasionally to 12 ft from late morning on.
.SATURDAY NIGHT...Northwest winds to 30 kt becoming west 15 to
25 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft overnight.
.SUNDAY...West winds 15 to 25 kt. Chance of snow. Waves 4 to 6 ft
occasionally to 8 ft.
.SUNDAY NIGHT...Northwest winds 15 to 25 kt diminishing to 10 to
15 kt overnight. Chance of snow. Waves 2 to 4 ft subsiding to
1 to 3 ft overnight.
.MONDAY...North winds 10 to 15 kt becoming northeast to 30 kt in
the afternoon. Snow likely. Waves 1 to 2 ft building to 3 to 5 ft
in the afternoon.
.TUESDAY...North winds to 30 kt. Chance of snow. Waves 5 to 8 ft
occasionally to 10 ft.

$$

LMZ366-565-567-669-868-870-082215-
Lake Michigan from Point Betsie to Manistee MI 5 NM offshore to
Mid Lake-
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 Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
826 AM CST Fri Dec 8 2017

STURGEON BAY WI TO POINT BETSIE MI SOUTH TO PORT WASHINGTON WI TO
WHITEHALL MI...

...GALE WARNING IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY
AFTERNOON...

.REST OF TODAY...West winds 15 to 25 kt. Chance of snow showers
through mid morning...then slight chance of snow showers this
afternoon. Waves 5 to 8 ft occasionally to 10 ft subsiding to
3 to 5 ft late.
.TONIGHT...West winds 10 to 20 kt becoming north to 30 kt
overnight. Snow. Waves 3 to 5 ft building to 4 to 6 ft
occasionally to 8 ft late.
.SATURDAY...North gales to 40 kt. Snow likely in the morning...
then chance of snow in the afternoon. Waves 6 to 9 ft
occasionally to 12 ft building to 8 to 12 ft occasionally to
16 ft from late morning on.
.SATURDAY NIGHT...Northwest winds to 30 kt becoming west 15 to
25 kt. Waves 8 to 11 ft occasionally to 14 ft subsiding to 4 to
6 ft occasionally to 8 ft overnight.
.SUNDAY...West winds 15 to 25 kt. Chance of snow in the
afternoon. Waves 4 to 6 ft occasionally to 8 ft.
.SUNDAY NIGHT...West winds 15 to 25 kt. Chance of snow. Waves
3 to 5 ft subsiding to 2 to 4 ft overnight.
.MONDAY...West winds 10 to 20 kt becoming northwest to 30 kt in
the afternoon. Snow likely. Waves 1 to 3 ft building to 4 to 6 ft
occasionally to 8 ft in the afternoon.
.TUESDAY...Northwest gales to 35 kt. Chance of snow. Waves 7 to
10 ft occasionally to 13 ft.

$$

LMZ080-671-673-675-777-779-872-874-876-878-082215-
Lake Michigan from Michigan City IN to St. Joseph MI 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 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-
826 AM CST Fri Dec 8 2017

PORT WASHINGTON WI TO WHITEHALL MI SOUTH...

...GALE WARNING IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY
EVENING...

.REST OF TODAY...West winds to 30 kt. Slight chance of snow
showers this afternoon. Waves 6 to 9 ft occasionally to 12 ft.
.TONIGHT...West winds to 30 kt becoming northwest. Snow. Waves
4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft late.
.SATURDAY...North gales to 45 kt. Snow likely in the morning...
then chance of snow in the afternoon. Waves 6 to 9 ft
occasionally to 12 ft building to 12 to 16 ft occasionally to
21 ft from late morning on.
.SATURDAY NIGHT...Northwest gales to 35 kt becoming west 15 to
25 kt overnight. Chance of snow in the evening. Waves 10 to 14 ft
occasionally to 18 ft subsiding to 5 to 8 ft occasionally to
10 ft overnight.
.SUNDAY...West winds to 30 kt. Chance of snow in the afternoon.
Waves 4 to 7 ft occasionally to 9 ft.
.SUNDAY NIGHT...West winds 15 to 25 kt. Chance of snow. Waves
4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft overnight.
.MONDAY...West winds 10 to 20 kt becoming northwest to 30 kt in
the afternoon. Chance of snow and rain. Waves 2 to 4 ft building
to 4 to 6 ft occasionally to 8 ft in the afternoon.
.TUESDAY...Northwest gales to 35 kt. Snow likely. Waves 8 to
11 ft occasionally to 14 ft.

$$

LMZ761-082215-
MAFOR 0816/
MICHIGAN NORTH...Gale Warning in effect...12640 12637 11727 11837
11840 11850. Chance of snow showers today. Chance of snow
Saturday morning. Waves 4 to 7 ft occasionally to 9 ft subsiding
to 3 to 5 ft occasionally to 7 ft today. Waves 2 to 4 ft building
to 4 to 6 ft occasionally to 8 ft tonight. Waves 6 to 9 ft
occasionally to 11 ft Saturday before mid morning.

MICHIGAN SOUTH...Gale Warning in effect...12640 12647 11637 11737
11747 11857. Waves 6 to 9 ft occasionally to 11 ft subsiding to 4
to 7 ft occasionally to 9 ft today. Waves 4 to 7 ft occasionally
to 9 ft tonight. Waves 8 to 11 ft occasionally to 14 ft Saturday
before mid morning.

$$


KMD

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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