NZUS99 KBUF 050552
GLFLOT

Experimental Tabular Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1252 AM EST Fri Dec 5 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...A 30.4 inch high centered over the corn belt region will
build into the region tonight. The high will then quickly move east
of the lake Friday. Another cold front will cross the Lake late
Saturday and Saturday night, this from a 29.3 inch low near northern
James Bay. Then, another area of surface high pressure averaging
30.3 inches will briefly build into the region Sunday. A 29.5 inch
low will approach the region from the south, before moving off the
Mid-Atlantic coast Sunday night. Another 30.4 inch high will quickly
pass across the region Monday night, then 29.9 inches will persist
across the Lake Tuesday.

LOZ062-051500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1252 AM EST Fri Dec 5 2025

.Today...
Weather.............Mostly sunny.
Sfc winds...........South 10 to 15 knots.
100-ft winds........South 15 to 20 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 5 feet.

.TONIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Southwest 20 to 25 knots.
100-ft winds........Southwest to 30 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.

.SATURDAY...
Weather.............Snow likely, then mostly cloudy in the
                              afternoon.
Sfc winds...........Southwest to 30 knots.
100-ft winds........Southwest gales to 35 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 10 feet.

.SATURDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Northwest 15 to 20 knots.
100-ft winds........Northwest 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.


.FORECAST DAYS 3 THROUGH 5......
.SUNDAY...Chance of snow in the morning, then snow in the
afternoon. chance of snow in the evening. Northeast winds 15 to
20 knots. Waves 2 to 4 feet.
.MONDAY...North winds 10 to 15 knots. Waves 2 to 4 feet.
.TUESDAY...Breezy. Snow showers, then snow showers likely.
Southwest winds 20 to 25 knots. Waves 5 to 7 feet.

$$

LOZ063-051500-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
1252 AM EST Fri Dec 5 2025

.Today...
Weather.............Mostly sunny.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.

.TONIGHT...
Weather.............Mostly cloudy.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet.

.SATURDAY...
Weather.............Cloudy with chance of snow showers.
Sfc winds...........Southwest 20 to 25 knots.
100-ft winds........Southwest to 30 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.

.SATURDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........West 20 to 25 knots becoming northwest 10 to 15
                              knots after midnight.
100-ft winds........West to 30 knots becoming northwest 15 to 20
                              knots after midnight.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 10 feet.


.FORECAST DAYS 3 THROUGH 5......
.SUNDAY...Snow likely in the afternoon and evening. chance of
snow after midnight. East winds 10 to 15 knots. Waves 3 to
5 feet.
.MONDAY...North winds 10 to 15 knots. Waves 3 to 5 feet.
.TUESDAY...Breezy. Chance of snow showers in the morning, then
snow showers likely. South winds 20 to 25 knots. Waves 5 to
7 feet.

$$

LOZ064-065-051500-
Lake Ontario open waters from Sodus Bay to Mexico Bay-
Lake Ontario open waters from Mexico Bay to the Saint Lawrence
River-
1252 AM EST Fri Dec 5 2025

.Today...
Weather.............Mostly sunny.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.

.TONIGHT...
Weather.............Mostly cloudy.
Sfc winds...........South 15 to 20 knots.
100-ft winds........South 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.

.SATURDAY...
Weather.............Mostly cloudy with chance of snow showers, then
                              cloudy with snow in the afternoon.
Sfc winds...........South to 30 knots.
100-ft winds........South gales to 35 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 10 feet.

.SATURDAY NIGHT...
Weather.............Mostly cloudy with chance of snow showers, then
                              mostly cloudy after midnight.
Sfc winds...........West 20 to 25 knots becoming northwest 15 to 20
                              knots after midnight.
100-ft winds........West to 30 knots becoming northwest 20 to 25
                              knots after midnight.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 10 feet.


.FORECAST DAYS 3 THROUGH 5......
.SUNDAY...Chance of snow in the morning, then snow likely in the
afternoon and evening. chance of snow after midnight. Northeast
winds 10 to 15 knots. Waves 3 to 5 feet.
.MONDAY...North winds 10 to 15 knots. Waves 3 to 5 feet.
.TUESDAY...Windy. Chance of snow showers in the morning, then
snow showers in the afternoon. snow showers likely. South winds
to 30 knots. Waves 6 to 9 feet.

$$

LOZ061-051500-
MAFOR 0510/
ONTARIO WEST 1/2 12410 13510 13520. Waves 1 to 3 feet building to
2 to 4 feet today. Waves 2 to 4 feet building to 3 to 5 feet
tonight.

ONTARIO EAST 1/2 16420. Waves 2 feet or less building to 3 to 5
feet, then subsiding to 2 to 4 feet today. Waves 2 to 4 feet
building to 3 to 5 feet tonight.

$$

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

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