714
FZUS61 KBUF 191401
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1001 AM EDT Sat Apr 19 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 29.6 inch low over southern Quebec today will move
east to near the Gulf of Saint Lawrence by Sunday morning, with a
trailing cold front crossing the lake this afternoon. A 30.4 inch
high will build across the upper Great Lakes tonight before reaching
the lower Great Lakes Sunday afternoon, and New England Monday. A
29.5 inch low is then forecast to move into the central Great Lakes
Monday before reaching Quebec Tuesday, with the trailing cold front
crossing the lake Monday night.

LOZ062-192100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1001 AM EDT Sat Apr 19 2025

.REST OF TODAY...Southwest winds 15 to 20 knots becoming west.
Scattered showers. Areas of fog early this afternoon. Waves 3 to
5 feet.
.TONIGHT...West winds 15 to 20 knots becoming northwest 10 to
15 knots. Waves 3 to 5 feet subsiding to 2 to 4 feet.
.SUNDAY...Northwest winds 5 to 15 knots becoming southwest. Waves
1 to 3 feet subsiding to 1 foot or less.
.SUNDAY NIGHT...South winds 5 to 15 knots becoming east 15 to
20 knots. Waves 1 to 3 feet.
.MONDAY...East winds 15 to 20 knots becoming southwest. Showers
likely. Waves 3 to 5 feet.
.TUESDAY...Southwest winds 15 to 20 knots becoming west and
diminishing to around 10 knots. Waves 3 to 6 feet subsiding to
1 to 3 feet.
.WEDNESDAY...Northwest winds 5 to 10 knots becoming east. Waves
2 feet or less.

$$

LOZ063>065-192100-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1001 AM EDT Sat Apr 19 2025

.REST OF TODAY...Southwest winds 15 to 20 knots becoming west.
Areas of fog. Showers and scattered thunderstorms late this
morning, then scattered showers this afternoon. Waves 3 to
6 feet.
.TONIGHT...West winds 15 to 20 knots becoming northwest. Waves
3 to 6 feet.
.SUNDAY...Northwest winds 5 to 15 knots becoming west. Waves 2 to
4 feet subsiding to 1 to 3 feet.
.SUNDAY NIGHT...Southwest winds 10 knots or less becoming east
10 to 15 knots. Waves 2 feet or less.
.MONDAY...East winds 15 to 20 knots becoming southwest. Rain
showers likely. Waves 2 to 4 feet building to 3 to 6 feet.
.TUESDAY...Southwest winds 15 to 25 knots becoming west and
diminishing to 10 to 15 knots. A chance of showers during the
day. Waves 3 to 6 feet building to 4 to 7 feet, then subsiding to
3 to 5 feet. Waves occasionally around 9 feet.
.WEDNESDAY...West winds 5 to 10 knots becoming southeast. Waves
1 to 3 feet subsiding to 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-192100-
MAFOR 1915/
ONTARIO WEST 1/2 11523 11623 12620 11610 12710 11700. Waves 3 to
5 feet this afternoon. Waves 3 to 5 feet subsiding to 2 to 4 feet
tonight. Waves 1 to 3 feet Sunday morning.

ONTARIO EAST 1/2 11523 19529 11623 13620 11720 12710. Waves 3 to
6 feet this afternoon and tonight. Waves 2 to 4 feet subsiding to
1 to 3 feet Sunday morning.

$$