Great Lakes Forecast
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000
FZUS63 KLOT 250256
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
856 PM CST Fri Nov 24 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 29.1 inches over James Bay Ontario
will move east into Quebec overnight, with a trailing cold front
moving across Lake Michigan. High pressure of 30.2 inches will
then build across the Great Lakes over the weekend. Low pressure
of 29.8 inches will pass just north of the northern Great Lakes
Sunday. High pressure of 30.2 inches will then build across the
upper Midwest and across the western Great Lakes through early
next week.

LMZ261-362-364-366-563-565-567-868-251045-
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-
856 PM CST Fri Nov 24 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...Southwest winds to 30 kt veering northwest.
Rain showers likely through midnight. Waves 8 to 12 ft
occasionally to 16 ft subsiding to 4 to 7 ft occasionally to 9
ft.
.SATURDAY...Northwest winds to 30 kt. Slight chance of rain and
snow showers in the morning...then slight chance of snow showers
in the afternoon. Waves 4 to 7 ft occasionally to 9 ft.
.SATURDAY NIGHT...Northwest winds 15 to 25 kt becoming west 10 to
20 kt after midnight. Waves 4 to 6 ft occasionally to 8 ft
subsiding to 2 to 4 ft.
.SUNDAY...Southwest winds to 30 kt becoming west in the afternoon.
Waves building to 5 to 8 ft occasionally to 10 ft.
.SUNDAY NIGHT...Northwest winds 15 to 25 kt becoming north 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 3 to
5 ft.
.MONDAY...East winds 10 to 15 kt becoming south to 30 kt in the
afternoon. Waves building to 4 to 6 ft occasionally to 8 ft.
.MONDAY NIGHT...South gales to 35 kt becoming southwest. Waves
building to 7 to 10 ft occasionally to 13 ft.
.TUESDAY...Southwest winds to 30 kt becoming west. Waves
subsiding to 5 to 8 ft occasionally to 10 ft.
.WEDNESDAY...North winds 10 to 20 kt veering to southeast 10 to
15 kt. Waves subsiding to 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-251045-
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-
856 PM CST Fri Nov 24 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Southwest winds to 30 kt veering to northwest.
Slight chance of rain showers or sprinkles overnight. Waves 7 to
10 ft occasionally to 13 ft.
.SATURDAY...Northwest winds to 30 kt. Slight chance of rain
showers. Waves 5 to 8 ft occasionally to 10 ft.
.SATURDAY NIGHT...Northwest winds to 30 kt diminishing to 10 to
15 kt. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to
5 ft.
.SUNDAY...West winds 15 to 25 kt becoming southwest to 30 kt.
Waves 2 to 4 ft building to 4 to 6 ft occasionally to 8 ft.
.SUNDAY NIGHT...West winds 15 to 25 kt becoming northwest 10 to
20 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft.
.MONDAY...Southeast winds 10 to 20 kt becoming south 15 to 25 kt.
Waves building to 3 to 5 ft.
.MONDAY NIGHT...South winds to 30 kt becoming southwest. Waves
6 to 9 ft occasionally to 12 ft.
.TUESDAY...Southwest winds to 30 kt becoming west 15 to 25 kt.
Waves 6 to 9 ft occasionally to 12 ft.
.WEDNESDAY...Northeast winds 10 to 15 kt becoming southeast.
Waves subsiding to 2 to 4 ft.

$$
LMZ761-251045-
MAFOR 2504/
MICHIGAN NORTH 10546 14740 11740 11730 11740 11730. Rain showers
through midnight. Waves 8 to 12 ft occasionally to 16 ft
subsiding to 4 to 7 ft occasionally to 9 ft by morning and
continuing Saturday. Waves 4 to 6 feet occasionally to 8 feet
Saturday evening.

MICHIGAN SOUTH 10540 11640 15740 11740. Waves 7 to 10 ft
occasionally to 13 ft subsiding to 5 to 8 ft occasionally to 10 ft
by morning and continuing Saturday. Waves 4 to 7 ft occasionally
to 9 ft Saturday 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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