682
FZUS61 KBUF 152102
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM EST Sat Nov 15 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 29.2 inch low will deepen to 29.0 inches as it tracks
from Georgian Bay to central New England by Sunday morning while
also sending an attendant cold front across the Lake tonight. This
low will deepen further to 28.8 inches over northern New England
Sunday before moving to the Canadian Maritimes Monday, then north to
Labrador Tuesday. A 30.3 inch high will then build from the upper
Great Lakes Tuesday to the lower Great Lakes Wednesday, then to New
England Thursday.

LOZ062-160400-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EST Sat Nov 15 2025

...GALE WARNING IN EFFECT FROM MIDNIGHT EST TONIGHT THROUGH LATE
SUNDAY NIGHT...

.TONIGHT...Southwest winds 15 to 25 knots becoming west to
30 knots. Showers with a chance of thunderstorms early, then a
chance of showers late this evening. A chance of showers late.
Waves 3 to 5 feet building to 8 to 12 feet. Waves occasionally
around 15 feet.
.SUNDAY...Northwest gales to 35 knots diminishing to 30 knots. A
chance of rain showers in the morning, then a chance of rain and
snow showers in the afternoon. Waves 9 to 13 feet. Waves
occasionally around 16 feet.
.SUNDAY NIGHT...Northwest winds to 30 knots. A chance of snow
showers. Waves 7 to 11 feet. Waves occasionally around 14 feet.
.MONDAY...Northwest winds to 30 knots. A chance of snow showers
in the morning. Waves 5 to 9 feet. Waves occasionally around
11 feet.
.MONDAY NIGHT...Northwest winds 15 to 25 knots becoming west.
Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves occasionally
around 9 feet.
.TUESDAY...West winds 15 to 20 knots becoming northwest 5 to
15 knots. Waves 3 to 5 feet subsiding to 1 to 2 feet.
.WEDNESDAY...North winds 5 to 10 knots becoming east. Waves
1 foot or less.
.THURSDAY...East winds 5 to 15 knots becoming southeast. Rain
showers likely Thursday night. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063-160400-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
402 PM EST Sat Nov 15 2025

...GALE WARNING IN EFFECT FROM MIDNIGHT EST TONIGHT THROUGH LATE
SUNDAY NIGHT...

.TONIGHT...South winds 15 to 20 knots becoming west and
increasing to 35 knot gales after midnight. Showers this evening.
A chance of showers late. Waves 1 to 3 feet building to 11 to
15 feet. Waves occasionally around 19 feet.
.SUNDAY...West gales to 35 knots becoming northwest. Rain showers
likely in the morning, then a chance of rain and snow showers in
the afternoon. Waves 11 to 15 feet. Waves occasionally around
19 feet.
.SUNDAY NIGHT...Northwest gales to 35 knots diminishing to
30 knots. A chance of snow showers. Waves 10 to 14 feet. Waves
occasionally around 18 feet.
.MONDAY...Northwest winds to 30 knots becoming west. A chance of
snow showers in the morning. Waves 8 to 12 feet. Waves
occasionally around 15 feet.
.MONDAY NIGHT...Northwest winds to 30 knots diminishing to 15 to
20 knots. A chance of snow showers. Waves 8 to 11 feet subsiding
to 5 to 9 feet. Waves occasionally around 14 feet.
.TUESDAY...West winds 15 to 20 knots becoming northwest 5 to
15 knots. Waves 4 to 7 feet subsiding to 1 to 2 feet. Waves
occasionally around 9 feet.
.WEDNESDAY...North winds 5 to 10 knots becoming east. Waves
around 1 foot.
.THURSDAY...Southeast winds 5 to 15 knots. Rain showers likely
Thursday night. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ064-065-160400-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
402 PM EST Sat Nov 15 2025

...GALE WARNING IN EFFECT FROM MIDNIGHT EST TONIGHT THROUGH LATE
SUNDAY NIGHT...

.TONIGHT...South winds 15 to 20 knots becoming west and
increasing to 35 knot gales after midnight. Showers this evening,
then a chance of showers after midnight. Waves 3 to 6 feet
building to 11 to 15 feet. Waves occasionally around 19 feet.
.SUNDAY...West gales to 35 knots becoming northwest. Rain showers
in the morning, then rain and snow showers likely early in the
afternoon. Snow showers likely late. Waves 11 to 15 feet. Waves
occasionally around 19 feet.
.SUNDAY NIGHT...Northwest gales to 35 knots. Snow showers likely
in the evening, then a chance of snow showers overnight. Waves
10 to 14 feet. Waves occasionally around 18 feet.
.MONDAY...Northwest winds to 30 knots. A chance of snow showers.
Waves 8 to 12 feet. Waves occasionally around 15 feet.
.MONDAY NIGHT...Northwest winds to 30 knots. A chance of snow
showers overnight. Waves 7 to 11 feet subsiding to 5 to 8 feet.
Waves occasionally around 14 feet.
.TUESDAY...Northwest winds 15 to 20 knots diminishing to 5 to
15 knots. A chance of rain and snow showers. Waves 4 to 7 feet
subsiding to 1 to 2 feet. Waves occasionally around 9 feet.
.WEDNESDAY...Northwest winds 5 to 10 knots becoming east. Waves
1 foot or less.
.THURSDAY...Southeast winds 5 to 15 knots. Rain showers likely
Thursday night. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-160400-
MAFOR 1522/
ONTARIO WEST 1/2...GALE WARNING IN EFFECT...11526 11630 12640
11740 13750. A chance of thunderstorms early this evening. A
chance of snow showers Sunday afternoon. Waves 2 to 3 feet
building to 10 to 13 feet, and occasionally around 16 feet
tonight. Waves 10 to 14 feet, and occasionally around 18 feet
Sunday.

ONTARIO EAST 1/2...GALE WARNING IN EFFECT...11426 11536 11640
12650 11756 12750. A chance of snow showers Sunday afternoon.
Waves 2 to 4 feet building to 11 to 15 feet, and occasionally
around 19 feet tonight. Waves 11 to 15 feet, and occasionally
around 19 feet Sunday.

$$