Great Lakes Forecast
Issued by NWS

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000
FZUS61 KBUF 140820
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
420 AM EDT Sat Oct 14 2017

For waters beyond five nautical miles of shore on Lake Ontario

Waves are the significant wave height - the average of the highest
1/3 of the wave spectrum. Occasional wave height is the average of
the highest 1/10 of the wave spectrum.

.SYNOPSIS...High pressure over the Canadian maritimes will push
further off the coast this afternoon and tonight...while a storm
system will become organized over the Upper Mississippi Valley.
The resulting surface low will deepen to 29.4 inches when it will
pass over the Upper Great Lakes...then will intensify to 29.1
inches as it will make its way to western Quebec on Sunday. A
strong cold front extending south from this system will plow
across Lake Ontario on Sunday. A 30.4 inch high over the southern
plains Sunday night will nose across the Ohio Valley to the Lower
Great Lakes on Monday and move toward the mid Atlantic on Tuesday.

LOZ062-141515-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
420 AM EDT Sat Oct 14 2017

...GALE WARNING IN EFFECT FROM SUNDAY AFTERNOON THROUGH SUNDAY
EVENING...

.TODAY...Southwest winds 10 knots or less becoming northeast. A
chance of showers late. Waves 2 feet or less.
.TONIGHT...East winds 5 to 15 knots becoming south. Showers
likely early, then a chance of showers. Waves 2 feet or less.
.SUNDAY...South winds 15 to 25 knots becoming southwest to
30 knots. Showers with a chance of thunderstorms in the
afternoon. Some thunderstorms may produce strong gusty winds.
Waves building to 4 to 7 feet. Waves occasionally around 9 feet.
.SUNDAY NIGHT...West gales to 40 knots becoming northwest and
diminishing to 30 knots overnight. A chance of showers. Waves
building to 9 to 13 feet. Waves occasionally around 16 feet.
.MONDAY...Northwest winds 15 to 25 knots. A chance of showers.
Waves 4 to 7 feet. Waves occasionally around 9 feet.
.TUESDAY...Southwest winds 15 to 25 knots. Waves 4 to 7 feet.
Waves occasionally around 9 feet.
.WEDNESDAY...Southwest winds 10 to 15 knots. Waves 2 to 4 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-141515-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
420 AM EDT Sat Oct 14 2017

...GALE WARNING IN EFFECT FROM SUNDAY EVENING THROUGH LATE SUNDAY
NIGHT...

.TODAY...Southwest winds 10 to 15 knots becoming east less than
10 knots. Waves 1 to 3 feet.
.TONIGHT...East winds 10 to 15 knots becoming south 15 to
20 knots. A chance of showers in the evening. Waves 1 to 3 feet.
.SUNDAY...South winds 15 to 25 knots becoming southwest. Showers
with a chance of thunderstorms in the afternoon. Some
thunderstorms may produce strong gusty winds. Waves 3 to 6 feet.
.SUNDAY NIGHT...West gales to 40 knots becoming northwest.
Showers with a chance of thunderstorms in the evening, then a
chance of showers overnight. Some thunderstorms may produce gusty
winds. Waves 10 to 14 feet. Waves occasionally around 18 feet.
.MONDAY...Northwest winds 15 to 25 knots. A chance of showers
during the day. Waves 7 to 10 feet. Waves occasionally around 13
feet.
.TUESDAY...Southwest winds 15 to 25 knots. Waves4 to 7 feet.
Waves occasionally around 9 feet.
.WEDNESDAY...Southwest winds 10 to 15 knots. Waves 2 to 4 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-141515-
MAFOR 1409/
ONTARIO WEST 1/2 12500 11600 11700 12200 12310. A chance of
showers this evening. Waves 2 feet or less.

ONTARIO EAST 1/2 12510 11500 11600 12200 11300 11410. A chance of
showers this evening. Waves 2 to 4 feet subsiding to 1 to 3 feet
today. Waves 2 feet or less tonight.

$$



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