Great Lakes Forecast
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503
FZUS63 KMKX 181446
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Milwaukee/Sullivan WI
846 AM 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.

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 approaching
the region.

LMZ261-362-364-366-563-565-567-868-182230-
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-
846 AM CST Fri Jan 18 2019

SHEBOYGAN WI TO PENTWATER MI NORTH...

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

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-182230-
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-
846 AM CST Fri Jan 18 2019

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Northwest winds 10 to 15 kt becoming northeast
10 to 20 kt. Slight chance of snow this afternoon. Waves 2 to
4 ft.
.TONIGHT...Northeast winds 15 to 25 kt increasing to 30 kt. Snow.
Freezing spray overnight. Waves 3 to 5 ft building to 5 to 8 ft
occasionally to 10 ft.
.SATURDAY...Northeast gales to 35 kt. Freezing spray. Snow in the
morning, then chance of snow in the afternoon. Waves 7 to 10 ft
occasionally to 13 ft.
.SATURDAY NIGHT...Northeast winds to 30 kt becoming north 15 to
25 kt. Freezing spray. Chance of snow overnight. Waves 7 to 10 ft
occasionally to 13 ft.
.SUNDAY...North winds 10 to 20 kt becoming northeast. Chance of
snow in the morning. Freezing spray. Waves 5 to 8 ft occasionally
to 10 ft subsiding to 4 to 6 ft occasionally to 8 ft.
.SUNDAY NIGHT...East winds 10 to 15 kt becoming southeast 10 to
20 kt. Freezing spray. Waves 2 to 4 ft.
.MONDAY...Southeast winds 15 to 25 kt increasing to 30 kt.
Freezing spray. Waves 2 to 4 ft building to 4 to 7 ft
occasionally to 9 ft.
.TUESDAY...South winds to 30 kt becoming southwest. Snow and
rain. Waves 7 to 10 ft occasionally to 13 ft.

$$

LMZ761-182230-
MAFOR 1816/
MICHIGAN NORTH 11730 12830 13130 11132 11142. Chance of snow
tonight and Saturday morning. Waves 3 to 5 ft subsiding to 2 to 4
ft this afternoon. Waves 3 to 5 ft building to 4 to 7 ft
occasionally to 9 ft tonight. Waves 4 to 7 ft occasionally to 9 ft
Saturday morning.

MICHIGAN SOUTH 12820 11120 12137 12147 11147 19157. Chance of
snow this afternoon. Waves 2 to 4 ft this afternoon. Waves 3 to 5
ft building to 6 to 9 ft occasionally to 12 ft tonight. Waves 7 to
10 ft occasionally to 13 ft Saturday morning.

$$
MBK

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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