121
FZUS61 KBUF 130202
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EDT Thu Jun 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 30.2 inch high will drift slowly east and off the Mid
Atlantic coast through Friday. A frontal boundary will remain
stalled south of the lower Great Lakes Friday through Monday.
Meanwhile, a 30.3 inch high will build from northern Ontario
province Friday to Quebec Saturday, then into the Canadian Maritimes
by Sunday. A weak 29.9 inch low will move from the Ohio Valley
Sunday to the Mid Atlantic Monday...then another weak 29.8 inch low
will push across the Upper Great Lakes Tuesday.

LOZ062-130900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EDT Thu Jun 12 2025

.OVERNIGHT...North winds 5 to 15 knots becoming northeast.
Waves 1 to 2 feet.
.FRIDAY...East winds 10 to 15 knots increasing to 15 to 20 knots.
Waves 2 to 4 feet.
.FRIDAY NIGHT...East winds 15 to 20 knots becoming northeast
10 to 15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.SATURDAY...Northeast winds 10 to 15 knots becoming east. Waves
1 to 3 feet.
.SATURDAY NIGHT...East winds 5 to 15 knots. Waves 1 to 2 feet.
.SUNDAY...East winds 5 to 15 knots. Waves 1 to 2 feet.
.MONDAY...East winds 5 to 10 knots becoming north. Waves around
1 foot.
.TUESDAY...North winds 5 to 10 knots becoming southeast.
Scattered showers. Waves 1 foot or less.

$$

LOZ063>065-130900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 PM EDT Thu Jun 12 2025

.OVERNIGHT...Northwest winds 10 to 15 knots becoming
northeast. Waves 1 to 3 feet.
.FRIDAY...Northeast winds 5 to 15 knots. Waves 1 to 3 feet.
.FRIDAY NIGHT...Northeast winds 10 to 15 knots. Waves 1 to
3 feet.
.SATURDAY...Northeast winds 10 to 15 knots. Waves 1 to 3 feet.
.SATURDAY NIGHT...Northeast winds 5 to 10 knots becoming east.
Waves 2 feet or less.
.SUNDAY...East winds 5 to 10 knots becoming southeast. A chance
of showers Sunday night. Waves 2 feet or less.
.MONDAY...Southeast winds 5 to 10 knots becoming southwest.
Scattered showers. Waves 1 foot or less.
.TUESDAY...West winds 5 to 10 knots becoming south. Scattered
showers. Waves 2 feet or less.

$$

LOZ061-130900-
MAFOR 1303/
ONTARIO WEST 1/2 11800 12110 11210 13220 11210. Waves 1 to 2 feet
overnight. Waves 2 to 4 feet Friday. Waves 2 to 4 feet subsiding
to 1 to 3 feet Friday evening.

ONTARIO EAST 1/2 11810 13110 13100 11110. Waves 1 to 3 feet
overnight and Friday. Waves 2 feet or less Friday evening.

$$