894
FZUS61 KBUF 231401
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1001 AM EDT Thu Jul 23 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 29.3 inch low over northern Quebec this morning
will move northeast and across the North Atlantic by tonight.
Meanwhile, a 30.2 inch high will build across the Central Great
Lakes today, and then across the Lake tonight. This high will linger
from the lower Great Lakes to New England Friday through Saturday
before weakening and drifting off the east coast Sunday. A 29.5 inch
area of low pressure will develop over the western Great Lakes
Sunday night and move north of the Lake Monday.

LOZ062-232100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1001 AM EDT Thu Jul 23 2026

.THIS AFTERNOON...West winds 5 to 10 knots becoming southwest.
Waves 2 feet or less.
.TONIGHT...Southwest winds 5 to 10 knots. Waves 1 foot or less.
.FRIDAY...Southwest winds 10 knots or less becoming northeast.
Waves 1 foot or less.
.FRIDAY NIGHT...East winds 5 to 10 knots becoming southeast.
Waves 1 foot or less.
.SATURDAY...South winds 10 knots or less becoming southwest.
Waves 1 foot or less.
.SUNDAY...Southwest winds less than 10 knots. A chance of
showers. Waves 1 foot or less.
.MONDAY...Southwest winds 5 to 10 knots. A chance of showers
during the day, then showers likely with a chance of
thunderstorms Monday night. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-232100-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1001 AM EDT Thu Jul 23 2026

.THIS AFTERNOON...West winds 10 to 15 knots. Waves 1 to 3 feet.
.TONIGHT...West winds 5 to 15 knots becoming southwest. Waves
2 feet or less.
.FRIDAY...Southwest winds 10 knots or less becoming northeast.
Waves 1 foot or less.
.FRIDAY NIGHT...Northeast winds 10 knots or less becoming
southeast. Waves 1 foot or less.
.SATURDAY...South winds 5 to 15 knots diminishing to 10 knots or
less. Waves 2 feet or less.
.SUNDAY...Southwest winds 10 knots or less. A chance of showers
Sunday night. Waves 1 foot or less.
.MONDAY...Southwest winds 10 knots or less becoming south. A
chance of showers during the day, then showers likely with a
chance of thunderstorms Monday night. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-232100-
MAFOR 2315/
ONTARIO WEST 1/2 12600 15500. Waves 2 feet or less.

ONTARIO EAST 1/2 13610 14500 11400. Waves 1 to 3 feet this
afternoon. Waves 2 feet or less tonight and Friday morning.

$$