178
FZUS61 KBUF 072002
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM EDT Tue Oct 7 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 cold front over southern Ontario and Quebec will push
across the lake through early this evening. In its wake, a 30.4 inch
high will build from the upper Great Lakes Wednesday to New York
State Thursday. The high will then drift off the New England
coastline Friday, where it will linger through Saturday.

LOZ062-080300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EDT Tue Oct 7 2025

.TONIGHT...Northwest winds 15 to 20 knots becoming north. Showers
through the early overnight. Waves 2 to 4 feet.
.WEDNESDAY...North winds 15 to 20 knots. Waves 3 to 5 feet.
.WEDNESDAY NIGHT...North winds 15 to 20 knots becoming northeast.
Waves 3 to 5 feet.
.THURSDAY...Northeast winds 5 to 15 knots becoming east less than
10 knots. Waves 2 to 4 feet subsiding to 2 feet or less.
.THURSDAY NIGHT...East winds 10 knots or less becoming south.
Waves 1 foot or less.
.FRIDAY...South winds 10 knots or less. Waves 1 foot or less.
.SATURDAY...South winds 10 knots or less becoming east. Waves
1 foot or less.
.SUNDAY...East winds 5 to 10 knots. Waves 2 feet or less.

$$

LOZ063>065-080300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 PM EDT Tue Oct 7 2025

.TONIGHT...West winds 15 to 20 knots becoming north. Showers with
a chance of thunderstorms early, then showers. A chance of
showers late. Waves 2 to 4 feet.
.WEDNESDAY...North winds 15 to 20 knots. Waves 3 to 5 feet
subsiding to 2 to 4 feet.
.WEDNESDAY NIGHT...North winds 15 to 20 knots. Waves 3 to 6 feet.
.THURSDAY...Northeast winds 15 to 20 knots becoming north 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 10 knots. Waves 2 feet or less.
.SATURDAY...South winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.SUNDAY...East winds 5 to 10 knots. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-080300-
MAFOR 0721/
ONTARIO WEST 1/2 13726 11720 14820. Waves 2 to 4 feet tonight.
Waves 3 to 5 feet Wednesday.

ONTARIO EAST 1/2 11516 11726 11826 14820 11820. A chance of
thunderstorms this evening. Waves 2 to 4 feet tonight. Waves 3 to
5 feet subsiding to 2 to 4 feet Wednesday.

$$