Great Lakes Forecast
Issued by NWS

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355
FZUS63 KLOT 190836
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
236 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 near Lake Ontario
early 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.

LMZ261-362-364-366-563-565-567-868-191500-
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-
236 AM CST Sun Nov 19 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.TODAY...Northwest winds to 30 kt becoming west. Chance of snow
showers this 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 to 30 kt diminishing to 15 to 25 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.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-191500-
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-
236 AM CST Sun Nov 19 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.TODAY...Northwest winds to 30 kt becoming west. Chance of snow
showers this 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.

$$

LMZ761-191500-
MAFOR 1910/
MICHIGAN NORTH 14740 14630. Chance of snow showers this morning.
Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 6 ft
occasionally to 8 ft today and to 3 to 5 ft tonight.

MICHIGAN SOUTH 14740 14640. Chance of snow showers this morning.
Waves 8 to 11 ft occasionally to 14 ft subsiding to 6 to 9 ft
occasionally to 12 ft today and to 4 to 7 ft occasionally to 9
ft tonight.

$$

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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