Great Lakes Forecast
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FZUS63 KLOT 080849
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
249 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.

LMZ261-362-081645-
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-
249 AM CST Fri Dec 8 2017

ROCK ISLAND PASSAGE TO CHARLEVOIX MI NORTH...

.TODAY...West winds to 30 kt diminishing to 10 to 20 kt. Chance
of snow showers. Waves 5 to 8 ft occasionally to 10 ft subsiding
to 3 to 5 ft.
.TONIGHT...Northwest winds 10 to 20 kt becoming north 15 to 25 kt
after midnight. Snow likely in the evening...then chance of snow
overnight. Waves 2 to 4 ft.
.SATURDAY...North winds to 30 kt. Chance of snow in the morning.
Waves 4 to 6 ft occasionally to 8 ft.
.SATURDAY NIGHT...Northwest winds to 30 kt becoming west 15 to
25 kt. Chance of snow overnight. Waves 3 to 5 ft subsiding to
2 to 4 ft.
.SUNDAY...West winds to 30 kt becoming northwest 15 to 25 kt.
Chance of snow. Waves 4 to 6 ft occasionally to 8 ft.
.SUNDAY NIGHT...Northwest winds 10 to 20 kt diminishing to 10 to
15 kt. Chance of snow. Waves 2 to 4 ft subsiding to 1 to 3 ft.
.MONDAY...Northeast winds 10 to 15 kt increasing to 30 kt in the
afternoon. Snow likely. Waves 1 to 2 ft building to 3 to 5 ft.
.TUESDAY...North winds to 30 kt. Chance of snow. Waves 4 to 6 ft
occasionally to 8 ft.

$$

LMZ364-366-563-565-567-868-081645-
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-
249 AM CST Fri Dec 8 2017

ROCK ISLAND PASSAGE TO CHARLEVOIX MI SOUTH TO SHEBOYGAN WI TO
PENTWATER MI...

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

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

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-081645-
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-
249 AM CST Fri Dec 8 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

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

.TODAY...West winds to 30 kt diminishing to 15 to 25 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
subsiding to 4 to 6 ft occasionally to 8 ft.
.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 12 to 16 ft occasionally to 21
ft.
.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.
.SUNDAY...West winds to 30 kt. Chance of snow in the afternoon.
Waves 4 to 7 ft occasionally to 9 ft.
.SUNDAY NIGHT...Northwest winds 15 to 25 kt becoming west 10 to
20 kt. Chance of snow. Waves 4 to 6 ft occasionally to 8 ft
subsiding to 2 to 4 ft.
.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.
.TUESDAY...Northwest gales to 35 kt diminishing to 30 kt. Snow
likely. Waves 8 to 11 ft occasionally to 14 ft.

$$

LMZ761-081645-
MAFOR 0810/
MICHIGAN NORTH 11640 12630 11620 11627 11727 11827 11837. Chance
of snow showers today. Waves 5 to 8 feet occasionally to 10 feet
subsiding to 3 to 5 feet today. Waves 2 to 4 feet tonight.

MICHIGAN CENTRAL 11640 12630 12620 11727 11827 11847. Chance
of snow showers this morning. Waves 5 to 8 ft occasionally to 10
ft subsiding to 3 to 5 ft today. Waves building
to 4 to 6 ft occasionally to 8 ft tonight.

MICHIGAN SOUTH 13640 12630 11647 12637. Waves 6 to 9 feet
occasionally to 12 feet today. Waves subsiding to 4 to 6 feet
occasionally to 8 feet tonight.

$$


JEE

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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