Great Lakes Forecast
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778
FZUS63 KLOT 191437
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
837 AM 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...Deep low pressure of 29.0 inches over Vermont this
morning will lift into Quebec today...while deepening to 28.8
inches. High pressure of 30.3 inches will build across the central
and southern Great Plains today and shift to the southeastern
U.S. by 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.

LMZ261-362-364-366-563-565-567-868-192245-
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 AM CST Sun Nov 19 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Northwest winds to 30 kt becoming west 15 to
25 kt. Chance of snow showers through mid morning...then slight
chance of snow showers this afternoon. Waves 6 to 9 ft
occasionally to 12 ft subsiding to 4 to 6 ft occasionally to
8 ft.
.TONIGHT...West winds 15 to 25 kt diminishing to 10 to 20 kt.
Slight chance of snow showers in the evening. Waves 4 to 6 ft
occasionally to 8 ft subsiding to 3 to 5 ft.
.MONDAY...Southwest winds 10 to 20 kt increasing to 15 to 25 kt
late in the morning...then increasing to gales to 35 kt late.
Waves 3 to 5 ft building to 6 to 9 ft occasionally to 12 ft.
.MONDAY NIGHT...Southwest gales to 40 kt. Waves 10 to 14 ft
occasionally to 18 ft.
.TUESDAY...West gales to 35 kt becoming northwest to 30 kt.
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 diminishing to 15 to
25 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.WEDNESDAY...West winds 10 to 20 kt. Waves 2 to 4 ft.
.THURSDAY...West winds 15 to 25 kt. Waves 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-192245-
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 AM CST Sun Nov 19 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Northwest winds to 30 kt becoming west. Slight
chance of snow showers through mid morning. Waves 8 to 11 ft
occasionally to 14 ft subsiding to 6 to 9 ft occasionally to 12
ft.
.TONIGHT...West winds to 30 kt. Waves 4 to 7 ft occasionally to
9 ft.
.MONDAY...Southwest winds to 30 kt increasing to gales to 40 kt.
Waves building to 7 to 10 ft occasionally to 13 ft.
.MONDAY NIGHT...Southwest gales to 40 kt. Waves 10 to 14 ft
occasionally to 18 ft.
.TUESDAY...West gales to 35 kt becoming northwest to 30 kt.
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 diminishing to 15 to
25 kt. Waves 5 to 8 ft occasionally to 10 ft subsiding to 4 to
7 ft occasionally to 9 ft.
.WEDNESDAY...Northwest winds 10 to 20 kt becoming west. Waves 3
to 5 ft subsiding to 2 to 4 ft.
.THURSDAY...West winds 10 to 20 kt. Waves 2 to 4 ft.

$$
LMZ761-192245-
MAFOR 1916/
MICHIGAN NORTH 11740 11730 14630 11620 11520. Chance of snow
showers this morning. Waves 6 to 9 feet occasionally to 12 feet
subsiding to 4 to 6 feet occasionally to 8 feet today. Waves 4 to
6 feet occasionally to 8 feet subsiding to 3 to 5 feet tonight.
Waves 3 to 5 feet Monday morning.

MICHIGAN SOUTH 12740 14640 11640 11540. Waves 8 to 11 feet
occasionally to 14 feet subsiding to 6 to 9 feet occasionally to
12 feet today. Waves 4 to 7 feet occasionally to 9 feet tonight
and Monday morning.

$$

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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