Great Lakes Forecast
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000
FZUS63 KLOT 040247
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
847 PM CST Sun Dec 3 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 29.5 inches developing over the Plains
will steadily deepen to 28.8 inches as it moves northeast to just
north of Lake Superior through Tuesday morning. A strong trailing
cold front will sweep across Lake Michigan Monday night. The low
will continue to James Bay Wednesday morning, and strong winds
will continue across the lake into midweek.

LMZ261-362-364-366-563-565-567-868-041030-
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 Sun Dec 3 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT FROM 3 AM CST MONDAY THROUGH LATE
TUESDAY NIGHT...

.REST OF TONIGHT...Southeast winds 10 to 20 kt becoming south and
gradually increasing to gales to 40 kt. Rain showers likely
overnight. Waves 2 to 4 ft building to 8 to 11 ft occasionally to
14 ft.
.MONDAY...South gales to 45 kt. Rain showers and slight chance of
thunderstorms. Waves 12 to 16 ft occasionally to 21 ft.
.MONDAY NIGHT...South gales to 45 kt becoming southwest. A few
storm force gusts to 50 kt in the late evening and overnight.
Rain showers in the evening. Waves 12 to 16 ft occasionally to 21
ft.
.TUESDAY...Southwest gales to 45 kt becoming west. Waves 12 to
16 ft occasionally to 21 ft.
.TUESDAY NIGHT...West gales to 45 kt diminishing to gales to
35 kt overnight. Chance of snow. Waves 10 to 14 ft occasionally
to 18 ft subsiding to 7 to 10 ft occasionally to 13 ft.
.WEDNESDAY...West winds to 30 kt. Chance of snow. Waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.WEDNESDAY NIGHT...Northwest winds to 30 kt. Chance of snow.
Waves 4 to 6 ft occasionally to 8 ft.
.THURSDAY...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.
.FRIDAY...West winds 10 to 20 kt. Chance of snow. Waves 1 to
3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-041030-
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 Sun Dec 3 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT FROM 3 AM CST MONDAY THROUGH LATE
TUESDAY NIGHT...

.REST OF TONIGHT...Southeast winds 15 to 25 kt becoming south and
increasing to gales to 35 kt. Chance of rain showers overnight.
Waves 2 to 4 ft building to 7 to 10 ft occasionally to 13 ft.
.MONDAY...South gales to 40 kt. Rain showers likely in the
morning...then chance of rain showers and slight chance of
thunderstorms in the afternoon. Waves 10 to 14 ft occasionally to
18 ft.
.MONDAY NIGHT...South gales to 40 kt becoming west. Rain showers
with a chance of thunderstorms in the evening. Waves 10 to 14 ft
occasionally to 18 ft subsiding to 8 to 12 ft occasionally to
16 ft.
.TUESDAY...West gales to 40 kt. Waves 8 to 12 ft occasionally to
16 ft.
.TUESDAY NIGHT...West gales to 40 kt diminishing to gales to
35 kt. Chance of snow. Waves 8 to 12 ft occasionally to 16 ft
subsiding to 7 to 10 ft occasionally to 13 ft.
.WEDNESDAY...West winds to 30 kt. Chance of snow. Waves 6 to 9 ft
occasionally to 12 ft.
.WEDNESDAY NIGHT...Northwest winds to 30 kt. Chance of snow.
Waves 4 to 7 ft occasionally to 9 ft.
.THURSDAY...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 3 to 5 ft.
.FRIDAY...West winds 10 to 20 kt. Chance of snow. Waves 2 to
4 ft.

$$
LMZ761-041030-
MAFOR 0404/
MICHIGAN NORTH...Gale Warning in effect...10320 11330 12456 14466
11466. Chance of thunderstorms Monday evening. Waves 2 to 4 feet
building to 8 to 11 feet occasionally to 14 feet overnight. Waves
12 to 16 feet occasionally to 21 feet Monday. Waves 14 to 18 feet
occasionally to 23 feet Monday evening.

MICHIGAN SOUTH...Gale Warning in effect...11330 11450 12456 13450
11456. Chance of showers overnight and Monday afternoon. Chance of
thunderstorms Monday evening. Waves 2 to 4 feet building to 8 to
11 feet occasionally to 14 feet overnight. Waves 10 to 14 feet
occasionally to 18 feet Monday and Monday evening.

$$

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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