777
FZUS61 KBUF 120801
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
401 AM EDT Mon May 12 2025

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 30.3 inch high draped across the New England will
slide off the east coast later today. A broad, weak 29.8 inch low
will move into the Ohio Valley Tuesday, then will drift toward the
Mid Atlantic coast Wednesday. A 29.1 inch low over the Upper
Mississippi Valley Thursday will then make its way to central
Ontario Friday, with its associated warm front crossing the lake
Thursday. The low will move into northern Quebec Friday night
through Saturday. A broad 30.0 inch high will move into the Great
Lakes region Sunday.

LOZ062-121500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
401 AM EDT Mon May 12 2025

.TODAY...East winds less than 10 knots. Waves 1 foot or less.
.TONIGHT...East winds 5 to 10 knots becoming southeast. Waves
1 foot or less.
.TUESDAY...East winds 5 to 15 knots. A chance of showers. Waves
2 feet or less.
.TUESDAY NIGHT...East winds 10 to 15 knots. A chance of showers.
Waves 1 to 3 feet.
.WEDNESDAY...East winds 5 to 15 knots becoming southeast. A
chance of showers. Waves 1 to 3 feet.
.THURSDAY...East winds 5 to 10 knots becoming southeast. A chance
of showers Thursday night. Waves 1 to 2 feet.
.FRIDAY...South winds 10 to 15 knots becoming southwest. Showers
likely during the day, then a chance of showers Friday night.
Waves 1 to 2 feet building to 2 to 4 feet.

$$

LOZ063>065-121500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
401 AM EDT Mon May 12 2025

.TODAY...Southeast winds 10 knots or less becoming north. Waves
1 foot or less.
.TONIGHT...Northeast winds 10 knots or less becoming south. Waves
1 foot or less.
.TUESDAY...Southeast winds 5 to 15 knots. A chance of showers in
the afternoon. Waves 2 feet or less.
.TUESDAY NIGHT...Southeast winds 10 to 15 knots. A chance of
showers. Waves 1 to 2 feet.
.WEDNESDAY...Southeast winds 10 to 15 knots. A chance of showers.
Waves 1 to 3 feet.
.THURSDAY...Southeast winds 5 to 15 knots. A chance of showers.
Waves 2 feet or less.
.FRIDAY...South winds 10 to 15 knots. Showers likely. Waves 1 to
3 feet.

$$

LOZ061-121500-
MAFOR 1209/
ONTARIO WEST 1/2 12200 12100 12200 12300. Waves 1 foot or less.

ONTARIO EAST 1/2 11300 12400 11700 11800 11200 11300 11400. Waves
1 foot or less.

$$