915
FZUS61 KBUF 221321
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
Issued by National Weather Service Cleveland OH
921 AM EDT Tue Apr 22 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 build across the waters today,
and will remain in place through Wednesday night. A weak trough
averaging 30.1 inches will approach the lake from the northwest on
Thursday. A 29.9 inch low will develop over the Midwest on Friday
and rapidly move east, passing south of the lake early Saturday
morning.

LOZ062-222115-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
921 AM EDT Tue Apr 22 2025

.THIS AFTERNOON...West winds 15 to 20 knots diminishing to 10 to
15 knots. Waves 3 to 6 feet subsiding to 2 to 4 feet.
.TONIGHT...West winds 5 to 15 knots becoming east less than
10 knots. Waves 1 to 3 feet subsiding to 1 foot or less.
.WEDNESDAY...East winds 10 knots or less. Waves 1 foot or less.
.WEDNESDAY NIGHT...East winds 10 knots or less. Waves 1 foot or
less.
.THURSDAY...East winds 5 to 10 knots. Waves 2 feet or less.
.FRIDAY...East winds 10 to 15 knots becoming north. A chance of
showers during the day, then showers Friday night. Waves 1 to
2 feet.
.SATURDAY...Northwest winds 15 to 20 knots becoming north 10 to
15 knots. Showers during the day. Waves 1 to 2 feet.

$$

LOZ063>065-222115-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
921 AM EDT Tue Apr 22 2025

.THIS AFTERNOON...West winds 15 to 20 knots. Waves 3 to 6 feet.
.TONIGHT...West winds 5 to 15 knots. Waves 3 to 5 feet subsiding
to 1 to 3 feet.
.WEDNESDAY...West winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.WEDNESDAY NIGHT...Southeast winds 10 knots or less becoming
east. Waves 1 foot or less.
.THURSDAY...East winds 5 to 10 knots. Waves 2 feet or less.
.FRIDAY...East winds 5 to 15 knots becoming southeast 15 to
20 knots. A chance of showers during the day, then showers Friday
night. Waves 2 feet or less.
.SATURDAY...Northwest winds 10 to 15 knots becoming north 15 to
20 knots. Showers during the day. Waves 1 to 2 feet.

$$

LOZ061-222115-
MAFOR 2215/
ONTARIO WEST 1/2 12620 11610 11600 12700 11300 11200. Waves 3 to
6 feet this afternoon. Waves 2 to 4 feet subsiding to 1 foot or
less tonight. Waves 1 foot or less Wednesday morning.

ONTARIO EAST 1/2 12620 11610 14600 11600. Waves 3 to 6 feet this
afternoon. Waves 3 to 5 feet subsiding to 1 to 3 feet tonight.
Waves 1 foot or less Wednesday morning.

$$