Great Lakes Forecast
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FZUS63 KLOT 170237
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
837 PM CST Fri Feb 16 2018

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...High pressure of 30.5 inches across northern Illinois
will move to the New England coast on Saturday. Low pressure of
29.4 inches will move across Hudson Bay tonight through Saturday
with a trailing cold front moving across Lake Michigan Saturday
evening. A ridge averaging 30.2 inches will move across Lake
Michigan early Sunday. Low pressure of 29.5 inches will move from
Wyoming Sunday to southern Lake Michigan Monday night.

LMZ261-362-364-366-563-565-567-868-171030-
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-
837 PM CST Fri Feb 16 2018

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Southwest winds 10 to 20 kt increasing to 30
kt overnight. Freezing spray overnight. Waves 3 to 5 ft building
to 5 to 8 ft occasionally to 10 ft overnight.
.SATURDAY...Southwest winds to 30 kt, with a brief period of gale
force gusts to 35 kt in the morning. Freezing spray in the
morning. Snow showers likely in the afternoon. Waves 6 to 9 ft
occasionally to 12 ft building to 8 to 11 ft occasionally to 14 ft
from late morning on.
.SATURDAY NIGHT...West winds 15 to 25 kt. Chance of snow in the
evening. Waves 6 to 9 ft occasionally to 12 ft subsiding to 3 to
5 ft.
.SUNDAY...West winds 10 to 15 kt backing to south to 30 kt in the
afternoon. Chance of snow in the afternoon. Waves 2 to 4 ft
building to 5 to 8 ft occasionally to 10 ft in the afternoon.
.SUNDAY NIGHT...South winds to 30 kt. Chance of snow. Waves 5 to
8 ft occasionally to 10 ft.
.MONDAY...Southeast winds 10 to 20 kt backing to northeast 15 to
25 kt. Rain and snow showers. Waves 4 to 6 ft occasionally to 8
ft.
.MONDAY NIGHT...North winds to 30 kt. Rain showers likely with a
chance of snow showers. Waves 4 to 7 ft occasionally to 9 ft.
.TUESDAY...North winds 10 to 20 kt. Chance of snow and rain
showers. Waves 4 to 6 ft occasionally to 8 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt. Waves 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-171030-
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-
837 PM CST Fri Feb 16 2018

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...West winds 10 to 20 kt backing to southwest 15
to 25 kt overnight. Waves 3 to 5 ft.
.SATURDAY...Southwest winds to 30 kt. Chance of snow showers in
the afternoon. Waves 4 to 7 ft occasionally to 9 ft building to
5 to 8 ft occasionally to 10 ft from late morning on.
.SATURDAY NIGHT...West winds 15 to 25 kt. Chance of snow in the
evening. Waves 4 to 7 ft occasionally to 9 ft subsiding to 4 to 6
ft occasionally to 8 ft overnight.
.SUNDAY...Southwest winds 10 to 20 kt becoming south to 30 kt in
the afternoon. Waves 2 to 4 ft building to 5 to 8 ft occasionally
to 10 ft in the afternoon.
.SUNDAY NIGHT...South winds to 30 kt. Chance of rain overnight.
Waves 5 to 8 ft occasionally to 10 ft.
.MONDAY...South winds 15 to 25 kt. Rain showers.  Waves 3 to 5
ft.
.MONDAY NIGHT...West winds 15 to 25 kt becoming north. Rain
showers. Waves 4 to 6 ft occasionally to 8 ft.
.TUESDAY...North winds 10 to 20 kt. Chance of rain showers. Waves
4 to 6 ft occasionally to 8 ft.
.WEDNESDAY...North winds 10 to 20 kt. Waves 4 to 6 ft
occasionally to 8 ft.

$$
LMZ761-171030-
MAFOR 1704/
MICHIGAN NORTH 11520 12540 12540 19550 11547 11540 11630. Chance
of snow showers Saturday afternoon and Saturday evening. Waves 3
to 5 ft building to 5 to 8 ft occasionally to 10 ft overnight.
Waves building to 8 to 11 ft occasionally to 14 ft Saturday. Waves
6 to 9 ft occasionally to 12 ft Saturday evening.


MICHIGAN SOUTH 11620 11520 11530 13540 11537 11630. Chance of
snow showers Saturday afternoon and Saturday evening. Waves 3 to 5
ft overnight. Waves 4 to 7 ft occasionally to 9 ft building to 5
to 8 ft occasionally to 10 ft Saturday. Waves subsiding to 4 to 7
ft occasionally to 9 ft Saturday evening.

$$


KJB

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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