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National Weather Service Marine Forecast FZUS61 KBUF

FZUS61 KBUF 210528
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1228 AM EST Tue Jan 21 2020

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
A 30.7 inch high centered over the upper Midwest will
build to the Ohio Valley Tuesday before moving to the Mid
Atlantic coast Wednesday and weakening to 30.5 inches. This high
will remain in place along the east coast Thursday and Friday
while slowly weakening further to 30.2 inches. On Saturday, low
pressure of 29.6 inches will track from the Ohio Valley to the Mid
Atlantic States.

LOZ062-211015-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1228 AM EST Tue Jan 21 2020

OVERNIGHT
Northwest winds 15 to 20 knots diminishing to 10 to
15 knots. Scattered snow showers. Waves 2 to 4 feet.

TUESDAY
West winds 5 to 15 knots increasing to 15 to 20 knots.
A chance of snow showers late in the morning. Waves 2 to 3 feet
building to 4 to 7 feet. Waves occasionally around 9 feet.

TUESDAY NIGHT
West winds 15 to 25 knots becoming southwest.
Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves occasionally
around 9 feet.

WEDNESDAY
Southwest winds 15 to 20 knots. Waves 3 to 5 feet
subsiding to 2 to 4 feet.

WEDNESDAY NIGHT
Southwest winds 15 to 20 knots diminishing to
10 to 15 knots. Waves 1 to 3 feet subsiding to 1 foot or less.

THURSDAY
Southwest winds 10 knots or less becoming east. Waves
1 foot or less.

FRIDAY
East winds 5 to 15 knots increasing to 15 to 20 knots.
Rain and snow showers likely Friday night. Waves 1 to 3 feet
building to 2 to 4 feet.

SATURDAY
East winds 15 to 20 knots becoming northeast. Rain
and snow showers likely. Waves 3 to 5 feet subsiding to 2 to
4 feet.



LOZ063>065-211015-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1228 AM EST Tue Jan 21 2020

OVERNIGHT
Northwest winds 10 to 15 knots. Scattered snow
showers. Waves 3 to 6 feet.

TUESDAY
Northwest winds 5 to 15 knots becoming west 15 to
20 knots. A chance of snow showers early, then snow showers
likely. A chance of snow showers late. Waves 2 to 4 feet building
to 4 to 7 feet. Waves occasionally around 9 feet.

TUESDAY NIGHT
West winds 15 to 25 knots. A chance of snow
showers in the evening. Waves 5 to 8 feet. Waves occasionally
around 10 feet.

WEDNESDAY
Southwest winds 15 to 20 knots diminishing to 10 to
15 knots. Waves 3 to 6 feet subsiding to 2 to 4 feet.

WEDNESDAY NIGHT
South winds 5 to 15 knots. Waves 1 to 3 feet.

THURSDAY
South winds 10 knots or less becoming east. Waves
2 feet or less.

FRIDAY
East winds 5 to 15 knots increasing to 15 to 20 knots.
A chance of snow showers Friday night. Waves 1 foot or less
building to 2 to 4 feet.

SATURDAY
East winds 15 to 20 knots becoming northeast. Snow
and rain showers likely during the day, then snow showers likely
Saturday night. Waves 2 to 4 feet.



LOZ061-211015-
MAFOR 2104/
ONTARIO WEST 1/2 11720 19727 12710 11610 12620 12630. Waves 3 to
5 feet subsiding to 2 to 4 feet overnight. Waves 2 to 3 feet
building to 4 to 7 feet, and occasionally around 9 feet Tuesday.
Waves 5 to 8 feet, and occasionally around 10 feet Tuesday
evening.

ONTARIO EAST 1/2 11720 11710 11710 19717 11700 11617 12620 11630.
Waves 3 to 6 feet overnight. Waves 2 to 4 feet building to 4 to 7
feet, and occasionally around 9 feet Tuesday. Waves 5 to 8 feet,
and occasionally around 10 feet Tuesday evening.