Great Lakes Forecast
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127
FZUS63 KLOT 190210
GLFLM

OPEN LAKE FORECAST for Lake Michigan
National Weather Service Chicago/Romeoville IL
910 PM CDT Mon Sep 18 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...A 30.2 inch high pressure over the northern Great
Lakes will shift into Quebec through Tuesday, with an associated
ridge axis remaining in place across the eastern United States
through the week. A low of 29.4 inches will form over the Northern
Plains Tuesday and deepen over Saskatchewan through Wednesday.
The low will reach Hudson Bay Thursday night. A second low of 29.4
inches will form over the central Plains Thursday night. This
will low will shift through Manitoba and form a low pressure
trough that will span from south central Canada through the
southern Plains Saturday.

LMZ261-362-364-366-563-565-567-868-190915-
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-
910 PM CDT Mon Sep 18 2017

SHEBOYGAN WI TO PENTWATER MI NORTH...

.REST OF TONIGHT...East winds 10 to 20 kt. Waves 2 to 4 ft.
.TUESDAY...East winds 10 to 20 kt. Waves 1 to 3 ft.
.TUESDAY NIGHT...Southeast winds 10 to 20 kt. Waves 2 to 4 ft.
.WEDNESDAY...South winds 15 to 25 kt. Waves 3 to 5 ft.
.WEDNESDAY NIGHT...South winds 10 to 20 kt. Chance of showers in
the evening...then chance of showers and thunderstorms overnight.
Waves 2 to 4 ft.
.THURSDAY...Southeast winds 10 to 15 kt. Waves 1 to 3 ft.
.THURSDAY NIGHT...South winds 10 to 20 kt. Waves 1 to 3 ft.
.FRIDAY...South winds 10 to 20 kt. Waves 1 to 3 ft.
.SATURDAY...South winds 10 to 20 kt. Waves 1 to 3 ft.

$$

LMZ080-669-671-673-675-777-779-870-872-874-876-878-190915-
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-
910 PM CDT Mon Sep 18 2017

SHEBOYGAN WI TO PENTWATER MI SOUTH...

.REST OF TONIGHT...Northeast winds 10 to 15 kt becoming southeast
10 to 20 kt. Chance of showers overnight. Waves 2 to 4 ft.
.TUESDAY...East winds 10 to 20 kt diminishing to around 10 kt
late. Chance of showers and slight chance of thunderstorms in the
morning...then slight chance of showers in the afternoon. Waves 2
to 4 ft.
.TUESDAY NIGHT...Southeast winds 10 to 20 kt. Waves 1 to 3 ft.
.WEDNESDAY...South winds 15 to 25 kt. Waves 2 to 4 ft.
.WEDNESDAY NIGHT...South winds 10 to 20 kt. Chance of showers and
thunderstorms overnight. Waves 2 to 4 ft.
.THURSDAY...South winds 10 to 15 kt. Waves 1 to 3 ft.
.THURSDAY NIGHT...South winds 10 to 20 kt. Waves 1 to 2 ft.
.FRIDAY...South winds 10 to 20 kt. Waves 1 to 2 ft.
.SATURDAY...South winds 10 to 20 kt. Waves 1 to 3 ft.

$$
LMZ761-190915-
MAFOR 1903/
MICHIGAN NORTH 14220 11210 11220 11120 11220. Waves 2 to 4 feet
tonight. Waves 1 to 3 feet Tuesday. Waves 2 to 4 feet Tuesday
evening.

MICHIGAN SOUTH 11210 11220 11320 12220 11210 11200 11210. Chance
of showers late this evening. Chance of showers late Tuesday.
Waves 2 to 4 feet overnight and Tuesday. Waves 1 to 3 feet
Tuesday evening.

$$


Rodriguez

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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