Great Lakes Forecast
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000
FZUS63 KLOT 200242
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
842 PM CST Sun Nov 19 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...High pressure averaging 30.2 inches centered across
much of the lower Mississippi Valley will shift to the
southeastern U.S. on Monday. Low pressure of 29.2 inches will
move from southern Saskatchewan early Monday to Quebec late
Tuesday. Broad high pressure of 30.4 inches will build across the
central and northern Great Plains Tuesday and gradually shift to
the lower Mississippi Valley Thursday.

LMZ261-362-364-366-563-565-567-868-201015-
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-
842 PM CST Sun Nov 19 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

...GALE WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY
AFTERNOON...

.REST OF TONIGHT...West winds to 30 kt diminishing to 15 to 25
kt overnight. Chance of snow showers this evening. Waves 4 to 7
ft occasionally to 9 ft.
.MONDAY...West winds 15 to 25 kt becoming southwest to 30 kt
early in the afternoon...then increasing to gales to 35 kt late.
Waves building to 5 to 8 ft occasionally to 10 ft.
.MONDAY NIGHT...Southwest gales to 40 kt. Waves 8 to 11 ft
occasionally to 14 ft building to 10 to 14 ft occasionally to
18 ft.
.TUESDAY...West gales to 35 kt becoming northwest. Chance of snow
in the afternoon. Waves 8 to 11 ft occasionally to 14 ft
subsiding to 5 to 8 ft occasionally to 10 ft.
.TUESDAY NIGHT...Northwest winds to 30 kt. Chance of snow
overnight. Waves 5 to 8 ft occasionally to 10 ft subsiding to
4 to 7 ft occasionally to 9 ft.
.WEDNESDAY...Northwest winds 15 to 25 kt becoming west 10 to
20 kt. Waves 3 to 5 ft subsiding to 1 to 3 ft.
.WEDNESDAY NIGHT...West winds 10 to 20 kt increasing to 15 to
25 kt. Waves 2 to 4 ft building to 3 to 5 ft.
.THURSDAY...West winds to 30 kt. Waves 4 to 6 ft occasionally to
8 ft.
.FRIDAY...South winds 15 to 25 kt increasing to gales to 35 kt in
the afternoon. Chance of rain. Waves 2 to 4 ft building to 6 to
9 ft occasionally to 12 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-201015-
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-
842 PM CST Sun Nov 19 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

...GALE WARNING IN EFFECT FROM MONDAY AFTERNOON THROUGH TUESDAY
AFTERNOON...

.REST OF TONIGHT...West winds to 30 kt becoming southwest. Waves
5 to 8 ft occasionally to 10 ft.
.MONDAY...Southwest winds to 30 kt increasing to gales to 35 kt.
Waves 6 to 9 ft occasionally to 12 ft.
.MONDAY NIGHT...Southwest gales to 40 kt. Waves 8 to 12 ft
occasionally to 16 ft building to 10 to 14 ft occasionally to
18 ft.
.TUESDAY...West gales to 35 kt becoming northwest. Waves 8 to
12 ft occasionally to 16 ft subsiding to 6 to 9 ft occasionally
to 12 ft.
.TUESDAY NIGHT...Northwest winds to 30 kt. Waves 6 to 9 ft
occasionally to 12 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt becoming west 10 to
15 kt. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to
4 ft.
.WEDNESDAY NIGHT...West winds 10 to 20 kt. Waves 2 to 4 ft.
.THURSDAY...Southwest winds 10 to 20 kt becoming west 15 to
25 kt. Waves 2 to 4 ft.
.FRIDAY...South winds 15 to 25 kt increasing to gales to 35 kt in
the afternoon. Waves 1 to 3 ft building to 5 to 8 ft occasionally
to 10 ft.

$$

LMZ761-201015-
MAFOR 2004/
MICHIGAN NORTH...Gale Warning in effect...11640 12630 11620 11530
11540 12550. Waves 4 to 7 feet occasionally to 9 feet overnight.
Waves building to 5 to 8 feet occasionally to 10 feet Monday.
Waves 8 to 12 feet occasionally to 16 feet Monday evening.

MICHIGAN SOUTH...Gale Warning in effect...12640 14540 11550
11560. Waves 5 to 8 feet occasionally to 10 feet overnight. Waves
6 to 9 feet occasionally to 12 feet Monday. Waves building to 10
to 14 feet occasionally to 18 feet Monday 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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