Great Lakes Forecast
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000
FZUS63 KLOT 250136
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
836 PM CDT Sun Sep 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 29.8 inches over western Ontario will
move northeast to James Bay through Monday...while high pressure
of 30.3 inches slowly drifts from the eastern Great Lakes toward
New England and weakens. Another low of 29.6 inches will lift
across the northern Great Lakes Tuesday night and will trail a
cold front across the lake. High pressure of 30.2 inches will
spread across the Great Plains into Illinois and Indiana through
Thursday.

LMZ261-362-364-366-563-565-567-868-250945-
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-
836 PM CDT Sun Sep 24 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...South winds 10 to 15 kt. Waves 1 to 3 ft.
.MONDAY...South winds 10 to 20 kt easing to 10 to 15 kt late in
the afternoon. Waves 1 to 3 ft.
.MONDAY NIGHT...South winds 10 to 15 kt. Waves 1 to 3 ft.
.TUESDAY...South winds 10 to 15 kt becoming southwest 15 to 20
kt. Chance of showers in the afternoon. Waves 1 to 3 ft building
to 2 to 4 ft.
.TUESDAY NIGHT...West winds 10 to 20 kt becoming northwest.
Chance of showers in the evening. Waves 2 to 4 ft.
.WEDNESDAY...Northwest winds 15 to 20 kt. Waves 3 to 5 ft.
.WEDNESDAY NIGHT...Northwest winds 15 to 20 kt easing to 10 to 15
kt. Waves subsiding to 1 to 3 ft.
.THURSDAY...West winds 10 to 15 kt becoming southwest 15 to 25
kt. Waves 1 to 3 ft building to 3 to 5 ft.
.FRIDAY...North winds to 30 kt. Waves 4 to 7 ft occasionally to
9 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-250945-
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-
836 PM CDT Sun Sep 24 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Southeast winds 10 to 15 kt becoming south.
Waves 1 to 2 ft.
.MONDAY...South winds 10 to 15 kt becoming variable around 10 kt
in the afternoon. Waves 1 to 3 ft.
.MONDAY NIGHT...Southeast winds 10 to 15 kt becoming south 5 to
10 kt. Waves 1 to 2 ft.
.TUESDAY...South winds 10 to 15 kt becoming southwest. Waves 1 to
2 ft.
.TUESDAY NIGHT...West winds 10 to 20 kt becoming northwest and
increasing to 15 to 25 kt toward morning. Waves 1 to 2 ft
building to 3 to 5 ft.
.WEDNESDAY...Northwest winds 15 to 25 kt in the morning...becoming
north and easing to 15 to 20 kt in the afternoon. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft late.
.WEDNESDAY NIGHT...North winds 10 to 20 kt. Waves 3 to 5 ft
subsiding to 2 to 4 ft.
.THURSDAY...North winds 10 to 15 kt becoming west. Waves subsiding
to 1 to 3 ft.
.FRIDAY...Northwest winds to 30 kt becoming north. Waves building
to 4 to 7 ft occasionally to 9 ft.

$$
LMZ761-250945-
MAFOR 2503/
MICHIGAN NORTH 13410 13420 12410. Waves 1 to 3 feet.

MICHIGAN SOUTH 12310 14410 11900 11310. Waves 1 to 3 feet.

$$

BMD

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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