642
FZUS61 KBUF 040803
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 AM EDT Mon Aug 4 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 broad 30.2 inch high will remain in place across the
Great Lakes and New England today. A weak backdoor cold front will
move south across the lake tonight. Another 30.4 inch high will then
build from Quebec Tuesday to New England Wednesday through Thursday
before moving east of New England by Friday.

LOZ062-041500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 AM EDT Mon Aug 4 2025

.TODAY...West winds less than 10 knots becoming south. Haze.
Waves 1 foot or less.
.TONIGHT...Southeast winds 10 knots or less becoming east 10 to
15 knots. Haze in the evening. Waves 2 feet or less.
.TUESDAY...East winds 5 to 15 knots. Waves 1 to 2 feet.
.TUESDAY NIGHT...East winds 5 to 10 knots. Waves 1 to 2 feet.
.WEDNESDAY...East winds 5 to 10 knots becoming southeast. Waves
2 feet or less.
.THURSDAY...South winds 5 to 10 knots. Waves 1 foot or less.
.FRIDAY...South winds 5 to 10 knots. Waves 1 foot or less.

$$

LOZ063>065-041500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 AM EDT Mon Aug 4 2025

.TODAY...West winds 10 knots or less. Haze. Waves 1 foot or less.
.TONIGHT...West winds 10 knots or less becoming east. Haze in the
evening. Waves 2 feet or less.
.TUESDAY...East winds 5 to 10 knots becoming northeast. Waves
2 feet or less.
.TUESDAY NIGHT...Northeast winds 5 to 10 knots becoming east.
Waves 1 foot or less.
.WEDNESDAY...East winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.THURSDAY...South winds 5 to 15 knots. Waves 2 feet or less.
.FRIDAY...South winds 5 to 15 knots. Waves 2 feet or less.

$$

LOZ061-041500-
MAFOR 0409/
ONTARIO WEST 1/2 11700 12600 11500 11400 13200. Waves 1 foot or
less.

ONTARIO EAST 1/2 14600 11500 12100 11200. Waves 2 feet or less.

$$