205
FZUS61 KBUF 241402
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM EDT Sun Aug 24 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 29.5 inch low will continue to churn near James Bay
today while pushing a cold front across the lake. A secondary
frontal boundary will cross the lake Monday, with troughing then
remaining across the lake through midweek. Meanwhile...a 30.2 inch
high will slide east and southeast from the Upper Great Lakes to the
Mid-Alantic Wednesday, then out to sea on Thursday. A 29.7 inch low
will track across northern Quebec sending its trailing cold front
through the lake Thursday night into the day Friday.

LOZ062-242100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 AM EDT Sun Aug 24 2025

.REST OF TODAY...Northwest winds 5 to 10 knots becoming west.
Waves 1 foot or less.
.TONIGHT...Southwest winds 10 to 15 knots becoming west. A chance
of waterspouts after midnight. A chance of showers after
midnight. Waves 2 feet or less building to 2 to 3 feet.
.MONDAY...West winds 10 to 15 knots increasing to 15 to 20 knots.
A chance of waterspouts. A chance of showers in the morning, then
showers likely in the afternoon. Waves 2 to 4 feet.
.MONDAY NIGHT...Northwest winds 15 to 20 knots becoming west. A
chance of waterspouts. Showers likely in the evening, then a
chance of showers overnight. Waves 3 to 5 feet.
.TUESDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. A chance of waterspouts. A chance of showers. Waves
2 to 4 feet.
.WEDNESDAY...West winds 10 to 15 knots. Waves 1 to 3 feet.
.THURSDAY...Southwest winds 10 to 15 knots becoming north. A
chance of showers. Waves 1 to 3 feet.

$$

LOZ063-242100-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
1002 AM EDT Sun Aug 24 2025

.REST OF TODAY...West winds 5 to 10 knots. A chance of showers.
Waves 1 to 2 feet.
.TONIGHT...Southwest winds 5 to 15 knots. A chance of showers
after midnight. A chance of waterspouts late. Waves 1 to 3 feet.
.MONDAY...West winds 10 to 15 knots increasing to 15 to 20 knots.
A chance of waterspouts. A chance of showers. Waves 2 to 4 feet
building to 3 to 5 feet.
.MONDAY NIGHT...West winds 15 to 20 knots. A chance of
waterspouts. A chance of showers. Waves 3 to 5 feet.
.TUESDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. A chance of waterspouts. A chance of showers. Waves
3 to 5 feet subsiding to 2 to 4 feet.
.WEDNESDAY...West winds 10 to 15 knots. A chance of waterspouts
during the day. A chance of showers during the day. Waves 1 to
3 feet.
.THURSDAY...Southwest winds 10 to 15 knots becoming north. A
chance of showers. Waves 2 to 3 feet.

$$

LOZ064-065-242100-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
1002 AM EDT Sun Aug 24 2025

.REST OF TODAY...Southwest winds 5 to 15 knots becoming west. A
chance of showers late this morning, then a chance of showers and
thunderstorms this afternoon. Waves 1 to 3 feet.
.TONIGHT...Southwest winds 5 to 15 knots. A chance of showers
after midnight. A chance of waterspouts late. Waves 1 to 2 feet.
.MONDAY...Southwest winds 10 to 15 knots becoming west 15 to
20 knots. A chance of waterspouts. Showers likely. Waves 1 to
3 feet building to 3 to 5 feet.
.MONDAY NIGHT...West winds 15 to 20 knots. A chance of
waterspouts. A chance of showers in the evening, then showers
likely overnight. Waves 3 to 5 feet.
.TUESDAY...West winds 15 to 20 knots becoming northwest 10 to
15 knots. A chance of waterspouts. Showers likely during the day,
then a chance of showers Tuesday night. Waves 3 to 5 feet
subsiding to 2 to 4 feet.
.WEDNESDAY...Northwest winds 10 to 15 knots becoming west. A
chance of waterspouts during the day. A chance of showers during
the day. Waves 1 to 3 feet.
.THURSDAY...Southwest winds 10 to 15 knots becoming north. A
chance of showers. Waves 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-242100-
MAFOR 2415/
ONTARIO WEST 1/2 12600 12500 11510 13610. A chance of waterspouts
overnight and Monday morning. Waves 1 foot or less this
afternoon. Waves 1 to 3 feet tonight and Monday morning.

ONTARIO EAST 1/2 12600 11500 11400 13510 11610. A chance of
waterspouts overnight and Monday morning. A chance of showers
this afternoon, overnight, and Monday morning. Waves 1 to 3 feet
this afternoon and tonight. Waves 1 to 3 feet building to 2 to 4
feet Monday morning.

$$