Great Lakes Forecast
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FZUS63 KLOT 161338
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
838 AM CDT Mon Oct 16 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...Expansive high pressure of 30.4 inches over the
Plains will move across the Lower Ohio Valley later today, and
then to the mid Atlantic Coast Tuesday and Wednesday where it will
remain through Friday. Meanwhile, low pressure of 29.4 inches
will move across northern Manitoba Monday evening to northern
Quebec Tuesday night. A second, and much stronger low averaging
28.8 inches will take a similar track across northern Manitoba
Wednesday to the Hudson Bay on Thursday.

LMZ261-362-364-366-563-565-567-868-162000-
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-
838 AM CDT Mon Oct 16 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TODAY...Southwest winds 10 to 20 kt increasing to 15 to
25 kt. Waves 2 to 4 ft building to 3 to 5 ft.
.TONIGHT...Southwest winds 15 to 25 kt increasing to 30 kt. A few
gale gusts to 35 kt possible overnight. Waves 4 to 6 ft
occasionally to 8 ft building to 6 to 9 ft occasionally to 12 ft.
.TUESDAY...Southwest winds to 30 kt diminishing to 10 to 20 kt.
Waves 6 to 9 ft occasionally to 12 ft subsiding to 4 to 7 ft
occasionally to 9 ft.
.TUESDAY NIGHT...Southwest winds 15 to 25 kt increasing to 30 kt.
Waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.
.WEDNESDAY...Southwest gales to 35 kt increasing to gales to
45 kt in the afternoon. Waves 7 to 10 ft occasionally to 13 ft
building to 10 to 14 ft occasionally to 18 ft.
.WEDNESDAY NIGHT...Southwest gales to 45 kt becoming west to
30 kt overnight. Waves 10 to 14 ft occasionally to 18 ft
subsiding to 6 to 9 ft occasionally to 12 ft.
.THURSDAY...West winds 10 to 20 kt. Waves 3 to 5 ft subsiding to
2 to 4 ft.
.FRIDAY...Southwest winds 15 to 25 kt becoming south to 30 kt.
Waves 3 to 5 ft building to 4 to 7 ft occasionally to 9 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-162000-
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-
838 AM CDT Mon Oct 16 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TODAY...Northwest winds 10 to 20 kt becoming southwest.
Waves 3 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.
.TONIGHT...Southwest winds 10 to 20 kt increasing to 30 kt.
Waves 2 to 4 ft building to 4 to 7 ft occasionally to 9 ft.
.TUESDAY...Southwest winds to 30 kt diminishing to 15 to 25 kt.
Waves 5 to 8 ft occasionally to 10 ft.
.TUESDAY NIGHT...Southwest winds to 30 kt. Waves 4 to 7 ft
occasionally to 9 ft.
.WEDNESDAY...Southwest winds to 30 kt becoming south gales to
35 kt. Waves 5 to 8 ft occasionally to 10 ft building to 7 to
10 ft occasionally to 13 ft.
.WEDNESDAY NIGHT...Southwest gales to 35 kt becoming west to
30 kt. Waves 7 to 10 ft occasionally to 13 ft subsiding to 5 to
8 ft occasionally to 10 ft.
.THURSDAY...Northwest winds 10 to 20 kt becoming west. Waves 3
to 5 ft subsiding to 1 to 3 ft.
.FRIDAY...South winds 15 to 25 kt. Waves 2 to 4 ft building to
3 to 5 ft.

$$
LMZ761-162000-
MAFOR 1615/
MICHIGAN NORTH 11520 13530 14540. Waves 2 to 4 ft building to 3
to 5 ft today. Waves 4 to 6 ft occasionally to 8 ft building to
6 to 9 ft occasionally to 12 ft tonight.

MICHIGAN SOUTH 11720 11620 19520 12520 12530 12540. Waves 3 to
6 ft occasionally to 8 ft subsiding to 2 to 4 ft today...
building to 4 to 7 ft occasionally to 9 ft tonight. Waves 5 to
8 ft occasionally to 10 ft Tuesday morning.

$$

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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