Great Lakes Forecast
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000
FZUS63 KLOT 221429
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
829 AM CST Wed Nov 22 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...Large high pressure of 30.4 inches over the central
Great Plains will move to the lower Mississippi Valley tonight. A
trough of low pressure averaging 29.8 inches will move across
Ontario and the Great Lakes on Thursday, with a deeper low
pressure system of 28.9 inches quickly moving through Manitoba and
Ontario Friday.

LMZ261-362-364-366-563-565-567-868-222230-
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-
829 AM CST Wed Nov 22 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Northwest winds 10 to 20 kt backing to
southwest. Waves 3 to 5 ft.
.TONIGHT...Southwest winds increasing to 15 to 25 kt increasing
to 30 kt. Chance of snow overnight. Waves building to 4 to 7 ft
occasionally to 9 ft.
.THURSDAY...West winds 15 to 25 kt diminishing to 10 to 20 kt.
Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft.
.THURSDAY NIGHT...West winds 10 to 20 kt becoming southwest to
30 kt overnight. Waves building to 4 to 7 ft occasionally to 9
ft.
.FRIDAY...Southwest gales to 40 kt. Chance of rain in the
afternoon. Waves 10 to 14 ft occasionally to 18 ft.
.FRIDAY NIGHT...Southwest gales to 40 kt becoming west to 30 kt
overnight. Waves 8 to 12 ft occasionally to 16 ft subsiding to
6 to 9 ft occasionally to 12 ft.
.SATURDAY...Northwest winds to 30 kt. Chance of snow. Waves 5
to 8 ft occasionally to 10 ft.
.SUNDAY...Northwest winds 10 to 20 kt becoming west 15 to 25 kt.
Waves 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-222230-
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-
829 AM CST Wed Nov 22 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Northwest winds 10 to 15 kt backing to
southwest this afternoon. Waves 3 to 5 ft subsiding to 2 to 4 ft.
.TONIGHT...Southwest winds gradually increasing to 30 kt. Waves
building to 4 to 6 ft occasionally to 8 ft.
.THURSDAY...Southwest winds to 30 kt becoming west 10 to 20 kt.
Waves 4 to 7 ft occasionally to 9 ft subsiding to 2 to 4 ft.
.THURSDAY NIGHT...West winds 10 to 20 kt becoming southwest to
30 kt overnight. Waves building to 3 to 5 ft.
.FRIDAY...Southwest gales to 35 kt becoming south. Waves 6 to 9
ft occasionally to 12 ft building to 8 to 11 ft occasionally to
14 ft.
.FRIDAY NIGHT...Southwest gales to 35 kt becoming west to 30 kt.
Chance of rain. Waves 7 to 10 ft occasionally to 13 ft subsiding
to 5 to 8 ft occasionally to 10 ft.
.SATURDAY...Northwest winds to 30 kt. Waves 5 to 8 ft
occasionally to 10 ft.
.SUNDAY...Northwest winds 10 to 20 kt becoming west. Waves 3 to
5 ft subsiding to 2 to 4 ft.

$$
LMZ761-222230-
MAFOR 2216/
MICHIGAN NORTH 11720 11620 13520 11530 11540 11630. Waves 3 to 5
ft today building to 4 to 7 ft occasionally to 9 ft.

MICHIGAN SOUTH 11710 11610 11510 11520 12530 12540. Waves 3 to 5
ft subsiding to 2 to 4 ft today then building again to 4 to 6 ft
occasionally to 8 ft.

$$

- Izzi

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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