Great Lakes Forecast
Issued by NWS

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787
FZUS61 KBUF 240803
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 AM EDT Sat Oct 24 2026

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 ridge averaging 30.5 inches affects the lake through
Sunday night as the embedded high pressure center drifts generally
southward from southern Quebec toward the Mid-Atlantic states. The
ridge then exits southeastward as a weak cold front sweeps
southeastward across the lake on Monday. Behind the front, another
ridge averaging 30.5 inches affects the lake through this Wednesday
as the embedded high pressure center wobbles southeastward from near
Manitoba to near the Gulf of Maine.

LOZ062-241500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 AM EDT Sat Oct 24 2026

.TODAY...Southeast winds 10 knots or less becoming east. Waves
1 foot or less.
.TONIGHT...East winds 10 knots or less becoming southwest. Waves
1 foot or less.
.SUNDAY...Southwest winds 5 to 10 knots. Waves 1 foot or less.
.SUNDAY NIGHT...Southwest winds 10 to 15 knots. Waves 2 feet or
less.
.MONDAY...West winds 10 to 15 knots becoming northeast. Waves
1 to 3 feet.
.TUESDAY...Northeast winds 5 to 15 knots becoming east. Waves
1 to 3 feet.
.WEDNESDAY...East winds 5 to 15 knots becoming south. Waves 1 to
2 feet.

$$

LOZ063>065-241500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 AM EDT Sat Oct 24 2026

.TODAY...Southeast winds less than 10 knots becoming east. Waves
1 foot or less.
.TONIGHT...East winds 10 knots or less becoming south. Waves
2 feet or less.
.SUNDAY...South winds 5 to 15 knots becoming southwest. Waves
2 feet or less.
.SUNDAY NIGHT...South winds 5 to 15 knots becoming southwest.
Waves 2 feet or less.
.MONDAY...Southwest winds 10 to 15 knots becoming northeast 15 to
20 knots. Waves 1 to 3 feet building to 2 to 4 feet.
.TUESDAY...Northeast winds 15 to 20 knots becoming east and
diminishing to 5 to 10 knots. Waves 2 to 4 feet subsiding to
1 foot or less.
.WEDNESDAY...East winds 5 to 15 knots becoming south 15 to
20 knots. Waves 2 feet or less building to 2 to 4 feet.

$$

LOZ061-241500-
MAFOR 2409/
ONTARIO WEST 1/2 12300 13200 11300 11400 11500. Waves 2 feet or
less.

ONTARIO EAST 1/2 13300 12200 11300 12400. Waves 1 foot or less.

$$