830
FZUS61 KBUF 110802
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 AM EDT Thu Jun 11 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 warm front will cross the lake tonight ahead of a 29.7
inch trough that will cross the lake later Friday. Associated with
the trough, an attendant cold front across the lake Friday afternoon
and evening. A 30.0 inch high will ridge across the lower Great
Lakes Friday night through Sunday morning, before a cold front
crosses the region later Sunday or Sunday night. The eastern edge of
a 30.1 inch high over the central portion of the CONUS will push
over the lake on Monday.

LOZ062-111500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 AM EDT Thu Jun 11 2026

.TODAY...Southwest winds 10 to 15 knots becoming west. Waves 1 to
3 feet.
.TONIGHT...West winds 5 to 15 knots becoming southwest. Waves
1 to 2 feet.
.FRIDAY...Southwest winds 15 to 20 knots becoming west 10 to
15 knots. A chance of showers. Waves 1 to 3 feet building to 2 to
4 feet.
.FRIDAY NIGHT...West winds 10 to 15 knots becoming southwest.
Waves 1 to 3 feet.
.SATURDAY...Southwest winds 10 to 15 knots. A chance of showers
Saturday night. Waves 1 to 3 feet.
.SUNDAY...Southwest winds 15 to 20 knots becoming west 10 to
15 knots. Showers with a chance of thunderstorms. Waves 1 to
3 feet building to 2 to 4 feet.
.MONDAY...West winds 10 to 15 knots becoming southwest. Waves
1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-111500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 AM EDT Thu Jun 11 2026

.TODAY...Southwest winds 5 to 15 knots becoming southeast. A
chance of showers early. Waves 2 feet or less.
.TONIGHT...Southwest winds 5 to 10 knots. Waves 1 foot or less.
.FRIDAY...South winds 5 to 15 knots becoming west 15 to 20 knots.
Showers with a chance of thunderstorms. Waves 1 to 3 feet
building to 2 to 4 feet.
.FRIDAY NIGHT...West winds 15 to 20 knots becoming southwest 5 to
15 knots. A chance of showers in the evening. Waves 2 to 4 feet
subsiding to 1 to 3 feet.
.SATURDAY...West winds 5 to 15 knots becoming south. Waves 1 to
2 feet.
.SUNDAY...South winds 15 to 20 knots becoming west 10 to
15 knots. Showers with a chance of thunderstorms. Waves 1 to
3 feet.
.MONDAY...West winds 5 to 15 knots becoming southwest. Waves 1 to
3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-111500-
MAFOR 1109/
ONTARIO WEST 1/2 13510 11610 11600 12500 11510. A chance of
showers early this morning. Waves 1 to 3 feet.

ONTARIO EAST 1/2 12510 11410 11300 14500. A chance of showers
this morning. Waves 2 feet or less.

$$