806
FZUS61 KBUF 272002
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM EDT Wed Aug 27 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 slide east across the Mid-Atlantic
states tonight, then out to sea on Thursday. A 29.7 inch low will
track across central Quebec Thursday and Thursday night sending its
slow-moving trailing cold front across the Lake late Thursday
afternoon through early Friday morning. A 30.2 inch high over the
upper Great Lakes will then settle across the Lake later Friday into
the weekend.

LOZ062-280300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EDT Wed Aug 27 2025

.TONIGHT...Southwest winds 10 to 15 knots increasing to 15 to
20 knots. Waves 1 to 3 feet building to 2 to 4 feet.
.THURSDAY...Southwest winds 15 to 20 knots becoming west. A
chance of showers late in the morning. Showers with a chance of
thunderstorms in the afternoon. A chance of waterspouts in the
afternoon. Waves 3 to 6 feet.
.THURSDAY NIGHT...Northwest winds 15 to 20 knots diminishing to
10 to 15 knots. A chance of waterspouts. Showers with a chance of
thunderstorms in the evening, then a chance of showers overnight.
Waves 3 to 5 feet subsiding to 2 to 4 feet.
.FRIDAY...Northwest winds 10 to 15 knots becoming west. Waves
1 to 3 feet.
.FRIDAY NIGHT...Northwest winds 10 to 15 knots. Waves 1 to
2 feet.
.SATURDAY...Northwest winds 5 to 10 knots. Waves 1 to 2 feet.
.SUNDAY...Northwest winds 10 knots or less becoming south. Waves
1 foot or less.
.MONDAY...Southeast winds 10 knots or less. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063-280300-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
402 PM EDT Wed Aug 27 2025

.TONIGHT...West winds 10 to 15 knots becoming southwest 15 to
20 knots. Waves 1 to 3 feet building to 2 to 4 feet.
.THURSDAY...Southwest winds 15 to 20 knots. A chance of
waterspouts in the afternoon. Showers likely early in the
afternoon. Showers with a chance of thunderstorms late. Waves
3 to 5 feet.
.THURSDAY NIGHT...West winds 15 to 20 knots becoming northwest
10 to 15 knots. A chance of waterspouts. Showers with a chance of
thunderstorms in the evening, then showers likely overnight.
Waves 3 to 5 feet subsiding to 2 to 4 feet.
.FRIDAY...Northwest winds 10 to 15 knots becoming west. A chance
of waterspouts in the morning. A chance of showers in the
morning. Waves 1 to 3 feet.
.FRIDAY NIGHT...West winds 10 to 15 knots becoming northwest. A
chance of showers. Waves around 2 feet.
.SATURDAY...Northwest winds 5 to 10 knots. Waves 1 to 2 feet.
.SUNDAY...Northwest winds 10 knots or less becoming southwest.
Waves 1 foot or less.
.MONDAY...South winds 10 knots or less becoming southeast. Waves
1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ064-065-280300-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
402 PM EDT Wed Aug 27 2025

.TONIGHT...West winds 10 to 15 knots becoming southwest 15 to
20 knots. Waves 2 to 4 feet.
.THURSDAY...Southwest winds 15 to 20 knots. A chance of
waterspouts in the afternoon. A chance of showers early in the
afternoon. Showers likely late. Waves 3 to 6 feet.
.THURSDAY NIGHT...Southwest winds 15 to 20 knots becoming
northwest 10 to 15 knots. A chance of waterspouts. Showers with a
chance of thunderstorms in the evening, then showers overnight.
Waves 3 to 5 feet subsiding to 2 to 4 feet.
.FRIDAY...Northwest winds 10 to 15 knots becoming west. A chance
of waterspouts in the morning. A chance of showers. Waves 1 to
3 feet.
.FRIDAY NIGHT...West winds 5 to 10 knots becoming northwest. A
chance of showers. Waves 1 to 2 feet.
.SATURDAY...Northwest winds 5 to 10 knots. Waves 2 feet or less.
.SUNDAY...Northwest winds 10 knots or less becoming southwest.
Waves 1 foot or less.
.MONDAY...South winds 10 knots or less becoming southeast. Waves
1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-280300-
MAFOR 2721/
ONTARIO WEST 1/2 11510 11610 11510 14520 11526. A chance of
waterspouts Thursday afternoon. A chance of thunderstorms
Thursday afternoon. Waves 1 to 3 feet building to 2 to 4 feet
tonight. Waves 3 to 6 feet Thursday.

ONTARIO EAST 1/2 12610 11510 14520 11520. A chance of waterspouts
Thursday afternoon. A chance of showers Thursday afternoon. Waves
1 to 3 feet building to 2 to 4 feet tonight. Waves 3 to 6 feet
Thursday.

$$