267
FZUS61 KBUF 221402
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM EDT Fri Aug 22 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 will build across the Lower Great Lakes
today...then will slide east across New England tonight. A 29.5 inch
low will move to near James Bay Saturday, then will linger in place
through Sunday while pushing a cold front across the lake later
Sunday afternoon and evening. A secondary frontal boundary will
cross the lake Monday, with troughing remaining across the lake
through mid week.

LOZ062-222100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 AM EDT Fri Aug 22 2025

.THIS AFTERNOON...West winds less than 10 knots becoming south.
Waves 1 foot or less.
.TONIGHT...Southeast winds 10 knots or less becoming south. Waves
1 foot or less.
.SATURDAY...Southwest winds 5 to 15 knots. Waves 2 feet or less.
.SATURDAY NIGHT...Southwest winds 10 to 15 knots. Showers likely.
Waves 1 to 3 feet.
.SUNDAY...West winds 10 to 15 knots. A chance of showers during
the day. Waves 2 to 3 feet.
.MONDAY...West winds 10 to 15 knots. A chance of showers. Waves
2 to 4 feet.
.TUESDAY...West winds 10 to 15 knots becoming northwest. A chance
of showers during the day. Waves 2 to 4 feet.

$$

LOZ063-222100-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
1002 AM EDT Fri Aug 22 2025

.THIS AFTERNOON...Northwest winds 10 knots or less becoming west.
Waves 1 foot or less.
.TONIGHT...South winds 10 knots or less. Waves 1 foot or less.
.SATURDAY...South winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.SATURDAY NIGHT...South winds 5 to 15 knots becoming southwest
15 to 20 knots. Showers likely with a chance of thunderstorms in
the evening, then showers likely overnight. Waves 1 to 3 feet.
.SUNDAY...Southwest winds 15 to 20 knots diminishing to 10 to
15 knots. Showers likely with a chance of thunderstorms during
the day, then a chance of showers and thunderstorms Sunday night.
Waves 1 to 3 feet.
.MONDAY...West winds 10 to 15 knots increasing to 15 to 20 knots.
A chance of showers. Waves 1 to 3 feet building to 2 to 4 feet.
.TUESDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. A chance of showers. Waves 2 to 4 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ064-065-222100-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
1002 AM EDT Fri Aug 22 2025

.THIS AFTERNOON...Northwest winds 10 knots or less becoming west.
Waves 1 foot or less.
.TONIGHT...Southwest winds 10 knots or less becoming south. Waves
1 foot or less.
.SATURDAY...South winds 5 to 15 knots. Waves 2 feet or less.
.SATURDAY NIGHT...South winds 10 to 15 knots increasing to 15 to
20 knots. Showers likely with a chance of thunderstorms. Waves
1 to 3 feet building to 3 to 5 feet.
.SUNDAY...Southwest winds 15 to 20 knots diminishing to 5 to
15 knots. Showers likely with a chance of thunderstorms during
the day, then a chance of showers and thunderstorms Sunday night.
Waves 3 to 5 feet subsiding to 1 to 2 feet.
.MONDAY...Southwest winds 10 to 15 knots becoming west. A chance
of showers. Waves 1 to 3 feet building to 2 to 4 feet.
.TUESDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. A chance of showers during the day. Waves 2 to 4 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-222100-
MAFOR 2215/
ONTARIO WEST 1/2 11600 11500 11300 13400 12500. Waves 1 foot or
less.

ONTARIO EAST 1/2 11700 11600 11500 14400 11410. Waves 2 feet or
less.

$$