813
FZUS61 KBUF 252102
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM EST Tue Nov 25 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 the western Great Lakes this
evening will track toward the central Great Lakes Wednesday, then
track into eastern Ontario through Wednesday night while deepening
to 29.4 inches. A cold front from this low will rush across the lake
Wednesday afternoon. The 29.4 inch surface low will then track well
north of the lake Thursday and Friday, as a 30.4 inch surface high
builds into the mid Mississippi Valley Friday and to the Ohio Valley
Saturday. Another surface low will cut northeastward through the
Central Great Lakes Sunday, deepening from 29.6 inches Sunday
morning to 29.4 inches Sunday night over western Quebec.

LOZ062-260400-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EST Tue Nov 25 2025

...GALE WARNING IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH FRIDAY
EVENING...

.TONIGHT...Southeast winds 5 to 10 knots becoming south. Showers
early, then a chance of showers late this evening. Showers likely
after midnight. Waves 1 foot or less.
.WEDNESDAY...South winds around 10 knots becoming southwest and
increasing to 35 knot gales in the afternoon. Showers. Waves
1 foot or less building to 8 to 11 feet. Waves occasionally
around 14 feet.
.WEDNESDAY NIGHT...Southwest gales to 35 knots increasing to
40 knots. Lake effect rain showers likely in the evening, then
rain showers likely overnight. Waves 10 to 14 feet building to
11 to 16 feet. Waves occasionally around 20 feet.
.THURSDAY...West gales to 40 knots. Lake effect rain and snow
showers likely. Waves 13 to 18 feet. Waves occasionally around
23 feet.
.THURSDAY NIGHT...West gales to 35 knots diminishing to 30 knots
overnight. Lake effect snow with lake effect rain showers likely
in the evening, then lake effect snow overnight. Waves 10 to
15 feet. Waves occasionally around 19 feet.
.FRIDAY...West gales to 35 knots becoming northwest and
diminishing to 15 to 25 knots. Lake effect snow showers likely.
Waves 9 to 13 feet subsiding to 4 to 7 feet. Waves occasionally
around 16 feet.
.SATURDAY...West winds 15 to 20 knots becoming south. A chance of
snow showers during the day, then snow and rain showers likely
Saturday night. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.SUNDAY...South winds 15 to 25 knots becoming west. Rain and snow
showers likely during the day, then rain showers likely with a
chance of snow showers Sunday night. Waves 3 to 5 feet.

$$

LOZ063-260400-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
402 PM EST Tue Nov 25 2025

...GALE WARNING IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH FRIDAY
EVENING...

.TONIGHT...Southeast winds 10 to 15 knots becoming south. Showers
early, then a chance of showers late this evening. Showers likely
after midnight. Waves 2 feet or less.
.WEDNESDAY...South winds 10 to 15 knots becoming southwest and
increasing to 30 knots in the afternoon. Showers. Waves 1 to
3 feet building to 5 to 8 feet. Waves occasionally around
10 feet.
.WEDNESDAY NIGHT...Southwest gales to 35 knots. Lake effect rain
showers likely in the evening, then lake effect rain and snow
showers likely overnight. Waves 10 to 14 feet building to 12 to
16 feet. Waves occasionally around 20 feet.
.THURSDAY...Southwest gales to 40 knots becoming west. Lake
effect rain and snow showers likely in the morning, then lake
effect rain with lake effect snow showers likely in the
afternoon. Waves 14 to 19 feet. Waves occasionally around
24 feet.
.THURSDAY NIGHT...West gales to 40 knots diminishing to 35 knots.
Lake effect snow with lake effect rain showers likely in the
evening, then lake effect snow overnight. Waves 15 to 19 feet
subsiding to 11 to 15 feet. Waves occasionally around 24 feet.
.FRIDAY...Northwest gales to 35 knots diminishing to 30 knots.
Lake effect snow during the day, then lake effect snow showers
likely Friday night. Waves 10 to 15 feet subsiding to 7 to
10 feet. Waves occasionally around 19 feet.
.SATURDAY...Northwest winds 15 to 20 knots becoming south. Snow
showers likely Saturday night. Waves 3 to 6 feet subsiding to
3 to 5 feet.
.SUNDAY...South winds 15 to 25 knots becoming west. Rain and snow
showers likely during the day, then rain showers likely with a
chance of snow showers Sunday night. Waves 3 to 6 feet.

$$

LOZ064-065-260400-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
402 PM EST Tue Nov 25 2025

...GALE WARNING IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH FRIDAY
EVENING...

.TONIGHT...Southeast winds 10 to 15 knots becoming south.
Showers. Waves 1 to 3 feet.
.WEDNESDAY...South winds 10 to 15 knots becoming southwest and
increasing to 30 knots in the afternoon. Showers. Waves 1 to
3 feet building to 5 to 8 feet. Waves occasionally around
10 feet.
.WEDNESDAY NIGHT...West gales to 35 knots becoming southwest.
Rain showers in the evening, then lake effect rain with a chance
of lake effect snow showers overnight. Waves 10 to 15 feet. Waves
occasionally around 19 feet.
.THURSDAY...Southwest gales to 40 knots becoming west. Lake
effect rain with lake effect snow showers likely in the morning,
then lake effect rain and snow in the afternoon. Waves 14 to
19 feet building to 15 to 20 feet. Waves occasionally around
26 feet.
.THURSDAY NIGHT...West gales to 40 knots diminishing to 35 knots.
Lake effect snow and lake effect rain in the evening, then lake
effect snow overnight. Waves 14 to 19 feet subsiding to 12 to
17 feet. Waves occasionally around 24 feet.
.FRIDAY...Northwest gales to 35 knots diminishing to 30 knots.
Lake effect snow showers likely. Waves 10 to 15 feet subsiding to
7 to 10 feet. Waves occasionally around 19 feet.
.SATURDAY...Northwest winds 15 to 25 knots becoming south. Snow
showers likely Saturday night. Waves 4 to 7 feet subsiding to
3 to 5 feet. Waves occasionally around 9 feet.
.SUNDAY...South winds to 30 knots becoming west and diminishing
to 15 to 20 knots. Rain showers with snow showers likely. Waves
5 to 8 feet subsiding to 3 to 6 feet. Waves occasionally around
10 feet.

$$

LOZ061-260400-
MAFOR 2522/
ONTARIO WEST 1/2...GALE WARNING IN EFFECT...12306 13406 11416
11536 11556. Waves 2 feet or less tonight. Waves 1 foot or less
building to 7 to 10 feet, and occasionally around 13 feet
Wednesday.

ONTARIO EAST 1/2...GALE WARNING IN EFFECT...12316 11410 12416
12410 11536. Waves 1 to 3 feet tonight. Waves 1 to 3 feet
building to 3 to 5 feet Wednesday.

$$