479
FZUS61 KBUF 262003
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
403 PM EDT Sat Jul 26 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 30.1 inch high over New England this evening will move
off the east coast tomorrow. Meanwhile, a weak convectively induced
29.9 inch surface low will pass near the Lake tomorrow morning. A
general area of weak high pressure averaging 30.0 inches will then
build into the Ohio Valley and southern Great Lakes tomorrow night
and Monday. A weak 29.7 inch low will move from James Bay Monday
night to east-central Quebec by mid week, while sending a cold front
across the Lake in the process. A 30.2 inch high over the Canadian
Rockies Wednesday will settle across the Great Lakes region through
Friday and remain anchored over the Northeast through next weekend.

LOZ062-270300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
403 PM EDT Sat Jul 26 2025

.TONIGHT...Southeast winds 5 to 15 knots becoming southwest. A
chance of showers and thunderstorms this evening, then showers
with a chance of thunderstorms after midnight. Waves 2 feet or
less.
.SUNDAY...Southwest winds 10 to 15 knots becoming west. Showers
likely early, then a chance of showers late in the morning. Waves
1 to 2 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots becoming northwest.
Waves 2 feet or less.
.MONDAY...West winds 10 knots or less becoming southwest. Waves
1 foot or less.
.MONDAY NIGHT...Southwest winds 5 to 15 knots becoming west.
Waves 2 feet or less.
.TUESDAY...West winds 5 to 10 knots becoming northwest. Waves
2 feet or less.
.WEDNESDAY...Northwest winds 5 to 15 knots becoming north. A
chance of showers Wednesday night. Waves 2 feet or less.
.THURSDAY...Northeast winds 5 to 15 knots becoming north. A
chance of showers during the day. Waves 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-270300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
403 PM EDT Sat Jul 26 2025

.TONIGHT...Southeast winds 5 to 15 knots becoming southwest. A
chance of showers and thunderstorms this evening, then showers
with a chance of thunderstorms after midnight. Waves 2 feet or
less.
.SUNDAY...Southwest winds 10 to 15 knots becoming west. Showers
likely with a chance of thunderstorms early, then a chance of
showers and thunderstorms late in the morning. Waves 1 to 3 feet.
.SUNDAY NIGHT...West winds 5 to 15 knots. Waves 1 to 3 feet.
.MONDAY...West winds 5 to 10 knots. Waves 1 foot or less.
.MONDAY NIGHT...Southwest winds 5 to 10 knots becoming west.
Waves 1 foot or less.
.TUESDAY...West winds 5 to 10 knots becoming north. Waves 1 foot
or less.
.WEDNESDAY...Northwest winds 5 to 15 knots becoming north. A
chance of showers Wednesday night. Waves 2 feet or less.
.THURSDAY...North winds 5 to 15 knots becoming northeast. A
chance of showers during the day. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-270300-
MAFOR 2621/
ONTARIO WEST 1/2 11200 11300 12506 11516 13610. A chance of
thunderstorms tonight. Waves 2 feet or less.

ONTARIO EAST 1/2 11200 11300 11410 11516 11506 11510 12610. A
chance of thunderstorms overnight and Sunday morning. Waves 2
feet or less tonight. Waves 1 to 3 feet Sunday.

$$