Experimental Modernized Open Lake Forecast - Lake Ontario

NZUS99 KBUF 310252
GLFLOT

Experimental Tabular Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
952 PM EST Tue Dec 30 2025

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...Low pressure averaging 29.0 inches over Georgian Bay
will move to northern New England and southern Quebec today, then to
the Canadian Maritimes by Tuesday while deepening to 28.8 inches. A
trough averaging 29.7 inches, will drop southward across the Lake
Thursday and linger through Friday.

LOZ062-310900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
952 PM EST Tue Dec 30 2025

...GALE WARNING IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.Overnight...
Weather.............Snow showers likely.
Sfc winds...........West gales to 35 knots decreasing to 30 knots
                              after midnight.
100-ft winds........West gales to 45 knots decreasing to 35 knots
                              after midnight.
Sig waves...........10 to 14 feet.
Ocnl waves..........Around 16 feet.

.WEDNESDAY...
Weather.............Snow showers likely.
Sfc winds...........West to 30 knots.
100-ft winds........West gales to 35 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 11 feet.

.WEDNESDAY NIGHT...
Weather.............Snow showers likely, then mostly cloudy after
                              midnight.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........Northwest to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 11 feet.

.THURSDAY...
Weather.............Partly sunny with chance of snow showers.
Sfc winds...........West 20 to 25 knots.
100-ft winds........West to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.

.THURSDAY NIGHT...
Weather.............Mostly cloudy with chance of snow showers.
Sfc winds...........West to 30 knots.
100-ft winds........West gales to 35 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.


.FORECAST DAYS 3 THROUGH 5......
.FRIDAY...Windy. Chance of snow showers in the morning. chance of
snow showers in the evening. West winds to 30 knots. Waves 6 to
9 feet.
.SATURDAY...Chance of snow showers in the morning. West winds
10 to 15 knots. Waves 3 to 5 feet.
.SUNDAY...Chance of snow showers after midnight. North winds
10 to 15 knots. Waves 2 to 4 feet.

$$

LOZ063-310900-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
952 PM EST Tue Dec 30 2025

...GALE WARNING IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.Overnight...
Weather.............Snow showers likely.
Sfc winds...........West gales to 40 knots.
100-ft winds........West storm force winds to 50 knots.
Sig waves...........12 to 16 feet.
Ocnl waves..........Around 21 feet.

.WEDNESDAY...
Weather.............Snow showers likely.
Sfc winds...........West to 30 knots.
100-ft winds........West gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.

.WEDNESDAY NIGHT...
Weather.............Snow showers likely, then mostly cloudy after
                              midnight.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........Northwest to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.

.THURSDAY...
Weather.............Snow showers.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........West to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.

.THURSDAY NIGHT...
Weather.............Snow showers likely, then mostly cloudy with
                              chance of snow showers after midnight.
Sfc winds...........West to 30 knots.
100-ft winds........West gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 14 feet.


.FORECAST DAYS 3 THROUGH 5......
.FRIDAY...Windy. Chance of snow showers, then snow showers likely
in the evening. chance of snow showers after midnight. West winds
to 30 knots. Waves 8 to 12 feet.
.SATURDAY...Chance of snow showers. Northwest winds 15 to
20 knots. Waves 3 to 5 feet.
.SUNDAY...Chance of snow showers after midnight. North winds
10 to 15 knots. Waves 2 to 4 feet.

$$

LOZ064-310900-
Lake Ontario open waters from Sodus Bay to Mexico Bay-
952 PM EST Tue Dec 30 2025

...GALE WARNING IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.Overnight...
Weather.............Mostly cloudy with chance of snow showers, then
                              mostly cloudy with snow showers likely after
                              midnight.
Sfc winds...........West gales to 40 knots.
100-ft winds........West storm force winds to 50 knots.
Sig waves...........14 to 18 feet.
Ocnl waves..........Around 22 feet.

.WEDNESDAY...
Weather.............Snow showers likely.
Sfc winds...........West 20 to 25 knots.
100-ft winds........West to 30 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.

.WEDNESDAY NIGHT...
Weather.............Snow showers likely, then mostly cloudy with
                              chance of snow showers after midnight.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........Northwest to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.

.THURSDAY...
Weather.............Mostly cloudy with chance of snow showers, then
                              snow showers in the afternoon.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........West to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.

.THURSDAY NIGHT...
Weather.............Snow showers.
Sfc winds...........West to 30 knots.
100-ft winds........West gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 14 feet.


.FORECAST DAYS 3 THROUGH 5......
.FRIDAY...Windy. Snow showers in the morning, then snow showers
likely in the afternoon and evening. chance of snow showers after
midnight. Southwest winds to 30 knots. Waves 8 to 12 feet.
.SATURDAY...Chance of snow showers. Northwest winds 15 to
20 knots. Waves 3 to 5 feet.
.SUNDAY...Chance of snow showers after midnight. Northwest winds
10 to 15 knots. Waves 2 to 4 feet.

$$

LOZ065-310900-
Lake Ontario open waters from Mexico Bay to the Saint Lawrence
River-
952 PM EST Tue Dec 30 2025

...GALE WARNING IN EFFECT UNTIL MIDNIGHT EST TONIGHT...

.Overnight...
Weather.............Mostly cloudy, then chance of snow showers
                              after midnight.
Sfc winds...........West gales to 35 knots decreasing to 30 knots
                              after midnight.
100-ft winds........West gales to 45 knots decreasing to 35 knots
                              after midnight.
Sig waves...........12 to 16 feet.
Ocnl waves..........Around 19 feet.

.WEDNESDAY...
Weather.............Mostly cloudy with chance of snow showers, then
                              mostly cloudy with snow showers likely in the
                              afternoon.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........Northwest to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 11 feet.

.WEDNESDAY NIGHT...
Weather.............Snow showers likely, then mostly cloudy after
                              midnight.
Sfc winds...........Northwest 20 to 25 knots.
100-ft winds........Northwest to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 10 feet.

.THURSDAY...
Weather.............Mostly sunny with chance of snow showers, then
                              partly sunny with snow showers likely in the
                              afternoon.
Sfc winds...........Northwest 15 to 20 knots.
100-ft winds........Northwest 20 to 25 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 10 feet.

.THURSDAY NIGHT...
Weather.............Snow showers likely, then mostly cloudy with
                              chance of snow showers after midnight.
Sfc winds...........West 20 to 25 knots.
100-ft winds........West to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.


.FORECAST DAYS 3 THROUGH 5......
.FRIDAY...Breezy. Snow showers likely, then chance of snow
showers in the evening. West winds 20 to 25 knots. Waves 6 to
9 feet.
.SATURDAY...Northwest winds 10 to 15 knots. Waves 3 to 5 feet.
.SUNDAY...Chance of snow showers after midnight. North winds
10 to 15 knots. Waves 2 to 4 feet.

$$

LOZ061-310900-
MAFOR 3104/
ONTARIO WEST 1/2...GALE WARNING IN EFFECT...12647 14637 11737
11727. Waves 8 to 12 feet subsiding to 7 to 10 feet overnight.
Waves 5 to 9 feet Wednesday and Wednesday evening.

ONTARIO EAST 1/2...GALE WARNING IN EFFECT...12647 14637 12727.
Waves 10 to 14 feet overnight. Waves 7 to 10 feet subsiding to 5
to 8 feet Wednesday. Waves 5 to 8 feet Wednesday evening.

$$

Occasional waves will only be displayed when values meet or exceed 5 feet / 2 meters.

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