692
FZUS61 KBUF 072039
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
439 PM EDT Fri Aug 7 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 high pressure ridge averaging 30.0 inches exits
eastward before a cold front sweeps eastward across Lake Ontario
Saturday night. Behind the front, a ridge averaging 30.1 inches
builds from the western Great Lakes through Sunday. This ridge
begins to exit eastward Sunday night and another cold front should
sweep eastward across Lake Ontario Monday night. Behind the
front, a trough averaging 29.8 inches should linger over the
eastern Great Lakes through this Wednesday.

LOZ062-080315-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
439 PM EDT Fri Aug 7 2026

.TONIGHT...East winds 10 knots or less becoming southwest. A
chance of showers and thunderstorms early. Waves 1 foot or less.
.SATURDAY...Southwest winds 5 to 15 knots. A chance of showers
late in the morning. Waves 2 feet or less.
.SATURDAY NIGHT...Southwest winds 10 to 15 knots becoming west. A
chance of showers and thunderstorms in the evening. Waves 1 to
2 feet.
.SUNDAY...West winds 5 to 10 knots becoming southwest. Waves
2 feet or less.
.SUNDAY NIGHT...Southwest winds 5 to 10 knots becoming south.
Waves 2 feet or less.
.MONDAY...Southwest winds 5 to 15 knots becoming west. Showers
likely with a chance of thunderstorms. Waves 1 to 2 feet.
.TUESDAY...West winds 10 knots or less becoming northwest.
Showers likely during the day, then a chance of showers Tuesday
night. Waves 1 foot or less.
.WEDNESDAY...Northwest winds 10 knots or less becoming west.
Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-080315-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
439 PM EDT Fri Aug 7 2026

.TONIGHT...East winds less than 10 knots becoming south. A chance
of showers and thunderstorms this evening, then a chance of
showers after midnight. Waves 1 foot or less.
.SATURDAY...Southwest winds 5 to 10 knots. A chance of showers
late in the morning. A chance of showers and thunderstorms in the
afternoon. Waves 2 feet or less.
.SATURDAY NIGHT...Southwest winds 5 to 15 knots becoming west. A
chance of showers. Waves 2 feet or less building to 2 to 3 feet.
.SUNDAY...West winds 10 to 15 knots. Waves 1 to 3 feet.
.SUNDAY NIGHT...Southwest winds 5 to 15 knots becoming south.
Waves 2 feet or less.
.MONDAY...South winds 5 to 10 knots becoming west. A chance of
showers and thunderstorms during the day, then showers likely
with a chance of thunderstorms Monday night. Waves 1 to 2 feet.
.TUESDAY...West winds 5 to 10 knots becoming northwest. A chance
of showers. Waves 2 feet or less.
.WEDNESDAY...Northwest winds 5 to 10 knots becoming west. A
chance of showers Wednesday night. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-080315-
MAFOR 0721/
ONTARIO WEST 1/2 11200 11300 11400 14500 11510. A chance of
showers and thunderstorms early this evening. Waves 2 feet or
less.

ONTARIO EAST 1/2 11100 11300 12400 14500. A chance of showers
early this evening, then a chance of showers and thunderstorms
this evening. A chance of showers overnight. Waves 2 feet or
less.

$$