Great Lakes Forecast
Issued by NWS

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247
FZUS61 KBUF 082002
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM EDT Wed Oct 8 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 30.4 inch high will build from the upper Great Lakes
today to New York State by Thursday. The high will then drift off
the New England coastline Friday, where it will linger through
Saturday. Another 30.4 inch high will then build across Quebec on
Sunday...while a 29.4 inch low slowly drifts north offshore of the
Carolinas.

LOZ062-090300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EDT Wed Oct 8 2025

.TONIGHT...North winds 15 to 20 knots becoming northeast. Waves
3 to 5 feet.
.THURSDAY...Northeast winds 15 to 20 knots becoming east 5 to
15 knots. Waves 2 to 4 feet subsiding to 2 feet or less.
.THURSDAY NIGHT...Southeast winds 10 knots or less becoming
south. Waves 1 foot or less.
.FRIDAY...South winds 5 to 10 knots. Waves 1 foot or less.
.FRIDAY NIGHT...South winds 5 to 10 knots. A chance of showers
overnight. Waves 1 foot or less.
.SATURDAY...South winds 5 to 10 knots becoming southeast. A
chance of showers during the day. Waves 2 feet or less.
.SUNDAY...East winds 10 to 15 knots. Waves 1 to 3 feet.
.MONDAY...Northeast winds 10 to 15 knots. Waves 1 to 3 feet.

$$

LOZ063>065-090300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 PM EDT Wed Oct 8 2025

.TONIGHT...North winds 15 to 25 knots. Waves 3 to 6 feet.
.THURSDAY...North winds 15 to 20 knots becoming northeast 5 to
15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.THURSDAY NIGHT...Northeast winds 10 knots or less becoming
south. Waves 1 foot or less.
.FRIDAY...South winds 5 to 15 knots. Waves 2 feet or less.
.FRIDAY NIGHT...South winds 5 to 15 knots. Waves 2 feet or less.
.SATURDAY...South winds 5 to 15 knots becoming southeast. Waves
2 feet or less.
.SUNDAY...East winds 10 to 15 knots. A chance of showers Sunday
night. Waves 1 to 3 feet.
.MONDAY...Northeast winds 10 to 15 knots. A chance of showers
during the day. Waves 1 to 3 feet.

$$

LOZ061-090300-
MAFOR 0821/
ONTARIO WEST 1/2 13820 12120 11110 12100. Waves 3 to 5 feet
tonight. Waves 2 to 4 feet subsiding to 1 to 2 feet Thursday.

ONTARIO EAST 1/2 11820 12830 12820 11810 11100 11800. Waves 2 to
4 feet building to 3 to 6 feet tonight. Waves 3 to 5 feet
subsiding to 1 to 3 feet Thursday.

$$