Great Lakes Forecast
Issued by NWS

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893
FZUS61 KBUF 220802
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 AM EDT Wed Jul 22 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 30.2 inch high will build across the region through Friday. The
high will move off the east coast Saturday. A 29.7 inch low will
approach from the northwest through Sunday.

LOZ062-221500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 AM EDT Wed Jul 22 2026

.TODAY...West winds 15 to 25 knots. Waves 4 to 7 feet subsiding
to 3 to 6 feet. Waves occasionally around 9 feet.
.TONIGHT...Northwest winds 15 to 20 knots becoming west 10 to
15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.THURSDAY...West winds 5 to 10 knots becoming southwest. Waves
1 to 2 feet.
.THURSDAY NIGHT...Southwest winds 10 knots or less. Waves 1 foot
or less.
.FRIDAY...South winds 10 knots or less becoming southeast. Waves
1 foot or less.
.SATURDAY...South winds 10 knots or less becoming southwest.
Waves 1 foot or less.
.SUNDAY...Southwest winds 5 to 15 knots becoming west. A chance
of showers. Waves 2 feet or less.

$$

LOZ063>065-221500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 AM EDT Wed Jul 22 2026

.TODAY...West winds to 30 knots. A chance of showers this
morning. Waves 5 to 9 feet. Waves occasionally around 11 feet.
.TONIGHT...West winds 15 to 25 knots diminishing to 5 to
10 knots. Waves 5 to 8 feet subsiding to 1 to 2 feet. Waves
occasionally around 10 feet.
.THURSDAY...West winds 10 to 15 knots. Waves 1 to 3 feet.
.THURSDAY NIGHT...West winds 5 to 10 knots becoming southwest.
Waves 2 feet or less.
.FRIDAY...South winds 10 knots or less becoming southeast. Waves
1 foot or less.
.SATURDAY...South winds 5 to 15 knots. Waves 2 feet or less.
.SUNDAY...Southwest winds 5 to 15 knots. A chance of showers.
Waves 2 feet or less.

$$

LOZ061-221500-
MAFOR 2209/
ONTARIO WEST 1/2 14630 11620 12710 11600. Waves 4 to 7 feet, and
occasionally around 9 feet today. Waves 3 to 6 feet subsiding to
1 to 2 feet tonight.

ONTARIO EAST 1/2 14630 11630 11720 11710 11600. Waves 5 to 8 feet
building to 6 to 9 feet, and occasionally around 11 feet today.
Waves 5 to 8 feet subsiding to 1 to 2 feet, and occasionally
around 10 feet tonight.

$$