Great Lakes Forecast
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000
FZUS63 KMKX 190310
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
910 PM CST Fri Jan 18 2019

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 will move from the southern Plains
into eastern Kentucky tonight and Saturday. This will bring gusty
north to northeast winds to Lake Michigan that linger through the
rest of the weekend. Some gales are possible Saturday along with
an increasing threat for freezing spray through the weekend.
Heavy freezing spray is expected across the northern half of Lake
Michigan Saturday into Sunday morning.

High pressure of 30.6 inches will move across Ontario later
Sunday into Sunday night, bringing lighter winds. South winds will
increase on Monday into Tuesday, ahead the next low of 29.6
inches approaching the region.

LMZ261-362-364-366-563-565-567-868-191030-
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-
910 PM CST Fri Jan 18 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

...HEAVY FREEZING SPRAY WARNING IN EFFECT FROM 6 AM CST SATURDAY
THROUGH SUNDAY MORNING...

.REST OF TONIGHT...Northeast winds 10 to 20 kt. Freezing spray.
Chance of snow. Waves 4 to 6 ft occasionally to 8 ft.
.SATURDAY...Northeast winds 10 to 20 kt increasing to 15 to
25 kt. Heavy freezing spray in the morning, then freezing spray
in the afternoon. Chance of snow in the morning, then slight
chance of snow in the afternoon. Waves 4 to 6 ft occasionally to
8 ft.
.SATURDAY NIGHT...Northeast winds 15 to 25 kt becoming north.
Freezing spray in the evening, then heavy freezing spray
overnight. Chance of snow in the evening, then chance of snow
showers overnight. Waves 4 to 7 ft occasionally to 9 ft.
.SUNDAY...Northeast winds 15 to 25 kt diminishing to 10 to 20 kt.
Heavy freezing spray. Waves 4 to 7 ft occasionally to 9 ft
subsiding to 3 to 5 ft.
.SUNDAY NIGHT...Northeast winds 10 to 20 kt becoming east 10 to
15 kt. Heavy freezing spray in the evening, then freezing spray
overnight. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft.
.MONDAY...Southeast winds 10 to 20 kt becoming south to 30 kt in
the afternoon. Freezing spray. Waves 2 to 4 ft building to 4 to
7 ft occasionally to 9 ft.
.MONDAY NIGHT...South winds to 30 kt. Freezing spray. Chance of
snow. Waves 7 to 10 ft occasionally to 13 ft.
.TUESDAY...South winds to 30 kt. Freezing spray. Snow. Waves 7 to
10 ft occasionally to 13 ft subsiding to 5 to 8 ft occasionally
to 10 ft.
.WEDNESDAY...Northwest winds to 30 kt diminishing to 10 to 20 kt.
Freezing spray. Chance of snow. Waves 4 to 6 ft occasionally to
8 ft subsiding to 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-191030-
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-
910 PM CST Fri Jan 18 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Northeast winds 15 to 25 kt increasing to
30 kt. Freezing spray. Snow. Waves 3 to 5 ft building to 5 to
8 ft occasionally to 10 ft.
.SATURDAY...Northeast winds to 30 kt. Freezing spray. Snow in the
morning, then chance of snow in the afternoon. Waves 6 to 9 ft
occasionally to 12 ft.
.SATURDAY NIGHT...Northeast winds to 30 kt becoming north.
Freezing spray. Chance of snow in the evening, then chance of
snow showers overnight. Waves 6 to 9 ft occasionally to 12 ft.
.SUNDAY...North winds 15 to 25 kt becoming northeast 10 to 20 kt.
Freezing spray. Chance of snow showers. Waves 5 to 8 ft
occasionally to 10 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.SUNDAY NIGHT...Northeast winds 10 to 20 kt becoming east 10 to
15 kt. Freezing spray. Waves 4 to 6 ft occasionally to 8 ft
subsiding to 3 to 5 ft.
.MONDAY...Southeast winds 10 to 20 kt increasing to 30 kt in the
afternoon. Freezing spray. Waves 2 to 4 ft building to 4 to 7 ft
occasionally to 9 ft.
.MONDAY NIGHT...Southeast winds to 30 kt becoming south. Freezing
spray. Waves 7 to 10 ft occasionally to 13 ft.
.TUESDAY...South winds to 30 kt. Snow and rain. Waves 7 to 10 ft
occasionally to 13 ft.
.WEDNESDAY...Northwest winds to 30 kt diminishing to 15 to 25 kt.
Freezing spray. Waves 4 to 7 ft occasionally to 9 ft.

$$

LMZ761-191030-
MAFOR 1904/
MICHIGAN NORTH 12120 12122 11120 12130 11830. Chance of snow
overnight, Saturday morning, and Saturday evening. Waves 4 to 7
ft occasionally to 9 ft.

MICHIGAN SOUTH 11137 14147 13140. Chance of snow Saturday
afternoon and Saturday evening. Waves 4 to 7 ft occasionally to 9
ft building to 5 to 8 ft occasionally to 10 ft overnight. Waves 7
to 10 ft occasionally to 13 ft Saturday and Saturday evening.

$$
Wood

Experimental modernized open lake forecast is available online at
weather.gov/mkx/glftable

Graphical marine forecasts are available online at:
weather.gov/greatlakes



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