Great Lakes Forecast
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FZUS63 KLOT 230145
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
845 PM CDT Fri Sep 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...High pressure of 30.1 inches across the central and
eastern Great Lakes will remain in place through Monday. Meanwhile,
low pressure of 29.5 inches will move northeast across the Upper
Midwest into Saturday. A persistent low pressure trough averaging
29.8 inches will remain from Minnesota through the central Plains
during the remainder of the weekend. During the middle of next
week, this trough and an associated cold front is expected to pass
across the lake.

LMZ261-362-364-366-563-565-567-868-230915-
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-
845 PM CDT Fri Sep 22 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...South winds 10 to 20 kt becoming southwest.
Waves 2 to 4 ft.
.SATURDAY...Southwest winds 10 to 20 kt. Waves 2 to 4 ft.
.SATURDAY NIGHT...South winds 10 to 20 kt diminishing to 10 to
15 kt. Waves 2 to 4 ft.
.SUNDAY THROUGH MONDAY NIGHT...South winds 10 to 15 kt. Waves 1
to 3 ft.
.TUESDAY...Southwest winds 10 to 15 kt becoming northwest 15 to
25 kt Tuesday night. Waves 1 to 3 ft building to 3 to 5 ft.
.WEDNESDAY...Northwest winds 15 to 25 kt diminishing to 10 to
20 kt. Waves 3 to 5 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-230915-
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-
845 PM CDT Fri Sep 22 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...South winds 10 to 15 kt. Waves 1 to 3 ft.
.SATURDAY...South winds 10 to 15 kt becoming southeast. Waves 1
to 3 ft.
.SATURDAY NIGHT AND SUNDAY...Southeast winds 10 to 15 kt. Waves
1 to 2 ft.
.SUNDAY NIGHT...Southeast winds 10 to 15 kt becoming south.
Waves 1 to 2 ft.
.MONDAY AND MONDAY NIGHT...South winds 10 to 15 kt. Waves 1 to
2 ft.
.TUESDAY...Southwest winds 10 to 15 kt becoming northwest 15 to
25 kt Tuesday night. Waves 1 to 3 ft building to 3 to 5 ft.
.WEDNESDAY...Northwest winds 15 to 25 kt diminishing to 10 to 20
kt. Waves 3 to 5 ft.

$$
LMZ761-230915-
MAFOR 2303/
MICHIGAN NORTH 13420 14520 11420. Waves 2 to 4 ft.

MICHIGAN SOUTH 14410 14310. Waves 1 to 3 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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