Great Lakes Forecast
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504
FZUS63 KLOT 151425 CCA
GLFLM

OPEN LAKE FORECAST for Lake Michigan...CORRECTED
National Weather Service Chicago/Romeoville IL
925 AM CDT Sun Oct 15 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...Low pressure of 29.5 inches near northern Lake
Ontario will continue to deepen to 29.4 inches as it lifts to the
southern Quebec today. High pressure of 30.4 inches will build
across the Great Plains Sunday and then shift to the mid Atlantic
Coast Tuesday into Wednesday while a series of low pressure
systems move east through Hudson Bay. The high will remain in
place through the remainder of the week.

LMZ261-362-364-366-563-565-567-669-868-870-152130-
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 Sheboygan to Port Washington WI 5 NM offshore
to Mid Lake-
Lake Michigan from Pentwater to Manistee MI 5 NM offshore to Mid
Lake-
Lake Michigan from Whitehall to Pentwater MI 5 NM offshore to Mid
Lake-
925 AM CDT Sun Oct 15 2017

PORT WASHINGTON WI TO WHITEHALL MI NORTH...

...GALE WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.REST OF TODAY...North gales to 40 kt becoming northwest to
30 kt. Chance of showers. Waves 8 to 11 ft occasionally to 14 ft
building to 10 to 14 ft occasionally to 18 ft.
.TONIGHT...Northwest winds 15 to 25 kt becoming west 10 to 20 kt
after midnight. Slight chance of waterspouts. Slight chance of
rain showers. Waves 6 to 9 ft occasionally to 12 ft subsiding to 2
to 4 ft.
.MONDAY...West winds 10 to 20 kt. Waves 2 to 4 ft.
.MONDAY NIGHT...Southwest winds to 30 kt. A few gale force gusts
to 35 kt overnight. Waves 4 to 7 ft occasionally to 9 ft building
to 6 to 9 ft occasionally to 12 ft overnight.
.TUESDAY...Southwest winds to 30 kt. Waves 6 to 9 ft occasionally
to 12 ft subsiding to 4 to 7 ft occasionally to 9 ft in the
afternoon.
.TUESDAY NIGHT...Southwest winds 15 to 25 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.WEDNESDAY...Southwest winds to 30 kt. Waves 6 to 9 ft
occasionally to 12 ft.
.THURSDAY...West winds 10 to 20 kt becoming southwest 10 to
15 kt. Waves 3 to 5 ft subsiding to 1 to 3 ft in the afternoon.

$$

LMZ080-671-673-675-777-779-872-874-876-878-152130-
Lake Michigan from Michigan City IN to St. Joseph MI 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 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-
925 AM CDT Sun Oct 15 2017

PORT WASHINGTON WI TO WHITEHALL MI SOUTH...

...GALE WARNING IN EFFECT UNTIL 7 PM CDT THIS EVENING...

.REST OF TODAY...Northwest gales to 40 kt diminishing to 30 kt.
Chance of showers. Waves 8 to 12 ft occasionally to 16 ft building
to 10 to 14 ft occasionally to 18 ft.
.TONIGHT...Northwest winds 15 to 25 kt diminishing to 10 to 20 kt
after midnight. Slight chance of waterspouts. Slight chance of
showers. Waves 8 to 11 ft occasionally to 14 ft subsiding to 4 to
6 ft occasionally to 8 ft.
.MONDAY...West winds 10 to 20 kt. Waves 3 to 5 ft subsiding to
1 to 3 ft in the afternoon.
.MONDAY NIGHT...Southwest winds to 30 kt. Waves 3 to 5 ft
building to 4 to 7 ft occasionally to 9 ft overnight.
.TUESDAY...Southwest winds to 30 kt. Waves 5 to 8 ft occasionally
to 10 ft.
.TUESDAY NIGHT...Southwest winds 15 to 25 kt. Waves 4 to 6 ft
occasionally to 8 ft.
.WEDNESDAY...Southwest winds to 30 kt. Waves 4 to 7 ft
occasionally to 9 ft.
.THURSDAY...West winds 10 to 20 kt becoming southwest 10 to
15 kt. Waves 3 to 5 ft subsiding to 2 to 4 ft in the afternoon.

$$
LMZ761-152130-
MAFOR 1515/
MICHIGAN NORTH...Gale Warning in effect...11856 11750 11740 12730
12720 12620. Chance of showers today. Waves 8 to 11 ft
occasionally to 14 ft building to 10 to 14 ft occasionally to 18
ft today. Waves 6 to 9 feet occasionally to 11 feet subsiding to
2 to 4 feet tonight. Waves 2 to 4 feet Monday morning.

MICHIGAN SOUTH...Gale Warning in effect...12750 11740 12730 12720
11620. Chance of showers with patchy drizzle late this
morning, then chance of showers today. Waves 8 to 12 feet
occasionally to 16 feet building to 10 to 14 feet occasionally to
18 feet today. Waves 8 to 11 feet occasionally to 14 feet
subsiding to 4 to 6 feet occasionally to 8 feet tonight. Waves 3
to 5 feet subsiding to 2 to 4 feet Monday morning.

$$


JEE

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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