NZUS99 KBUF 052052
GLFLOT

Experimental Tabular Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
352 PM 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 just east of the lake this
morning will push farther east and off the coast today. Another cold
front will cross the lake late Saturday and Saturday night, this
from a 29.3 inch low near northern James Bay. A weak 29.9 inch
surface low and trough will cross the lake on Sunday afternoon and
evening. Another 30.4 inch high will quickly pass across the region
Monday night. A 29.8 inch wave will cross the region on Tuesday.

LOZ062-060300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
352 PM EST Fri Dec 5 2025

.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 7 feet.

.SATURDAY...
Weather.............Mostly cloudy with chance of snow showers.
Sfc winds...........Southwest to 30 knots.
100-ft winds........Southwest gales to 35 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 11 feet.

.SATURDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........West 15 to 20 knots.
100-ft winds........West 20 to 25 knots.
Sig waves...........6 to 9 feet subsiding to 3 to 5 feet after
                              midnight.
Ocnl waves..........Around 10 feet subsiding to around 6 feet after
                              midnight.

.SUNDAY...
Weather.............Cloudy with chance of snow showers, then cloudy
                              with snow in the afternoon.
Sfc winds...........Northeast 10 to 15 knots.
100-ft winds........Northeast 15 to 20 knots.
Sig waves...........2 to 4 feet.

.SUNDAY NIGHT...
Weather.............Mostly cloudy with chance of snow showers, then
                              partly cloudy after midnight.
Sfc winds...........Northwest 15 to 20 knots.
100-ft winds........North 20 to 25 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 6 feet.


.FORECAST DAYS 3 THROUGH 5......
.MONDAY...North winds 10 to 15 knots. Waves 3 to 5 feet.
.TUESDAY...Breezy. Snow showers likely. showers likely. South
winds 20 to 25 knots. Waves 6 to 9 feet.
.WEDNESDAY...Breezy. Snow showers in the morning. showers, then
rain and snow showers likely. Southwest winds 20 to 25 knots.
Waves 5 to 7 feet.

$$

LOZ063-060300-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
352 PM EST Fri Dec 5 2025

.Tonight...
Weather.............Mostly cloudy.
Sfc winds...........Southwest 15 to 20 knots.
100-ft winds........Southwest 20 to 25 knots.
Sig waves...........2 to 4 feet building to 3 to 5 feet after
                              midnight.
Ocnl waves..........Around 6 feet after midnight.

.SATURDAY...
Weather.............Mostly cloudy with chance of snow showers, then
                              mostly cloudy with chance of rain and snow
                              showers in the afternoon.
Sfc winds...........Southwest 20 to 25 knots.
100-ft winds........Southwest to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 10 feet.

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

.SUNDAY...
Weather.............Cloudy with chance of snow showers, then cloudy
                              with snow in the afternoon.
Sfc winds...........Northeast 10 to 15 knots becoming east in the
                              afternoon.
100-ft winds........Northeast 15 to 20 knots becoming east in the
                              afternoon.
Sig waves...........2 to 4 feet.

.SUNDAY NIGHT...
Weather.............Mostly cloudy with snow likely, then mostly
                              cloudy after midnight.
Sfc winds...........North 20 to 25 knots.
100-ft winds........North to 30 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 8 feet.


.FORECAST DAYS 3 THROUGH 5......
.MONDAY...North winds 10 to 15 knots. Waves 3 to 5 feet.
.TUESDAY...Breezy. Snow showers likely. showers likely. South
winds 20 to 25 knots. Waves 5 to 7 feet.
.WEDNESDAY...Breezy. Snow showers in the morning. showers, then
rain and snow showers likely after midnight. South winds 20 to
25 knots. Waves 5 to 7 feet.

$$

LOZ064-065-060300-
Lake Ontario open waters from Sodus Bay to Mexico Bay-
Lake Ontario open waters from Mexico Bay to the Saint Lawrence
River-
352 PM EST Fri Dec 5 2025

.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 showers likely in the
                              afternoon.
Sfc winds...........South 20 to 25 knots.
100-ft winds........Southwest to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 11 feet.

.SATURDAY NIGHT...
Weather.............Mostly cloudy with chance of rain and snow
                              showers, then mostly cloudy after midnight.
Sfc winds...........Southwest 20 to 25 knots becoming northwest 15
                              to 20 knots after midnight.
100-ft winds........Southwest to 30 knots becoming northwest 20 to
                              25 knots after midnight.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 11 feet.

.SUNDAY...
Weather.............Mostly cloudy with chance of snow showers, then
                              cloudy with snow in the afternoon.
Sfc winds...........Northeast 10 to 15 knots.
100-ft winds........Northeast 15 to 20 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet in the morning.

.SUNDAY NIGHT...
Weather.............Snow likely, then mostly cloudy with chance of
                              snow showers after midnight.
Sfc winds...........North 20 to 25 knots.
100-ft winds........North to 30 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.


.FORECAST DAYS 3 THROUGH 5......
.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 6 to
9 feet.
.WEDNESDAY...Windy. Snow showers in the morning. showers, then
snow showers after midnight. South winds to 30 knots. Waves 6 to
9 feet.

$$

LOZ061-060300-
MAFOR 0522/
ONTARIO WEST 1/2 11510 13520 13530 11630. A chance of snow
showers Saturday. Waves 1 to 3 feet building to 3 to 6 feet
tonight. Waves 3 to 6 feet building to 4 to 7 feet Saturday.

ONTARIO EAST 1/2 12420 13520 13530. A chance of snow showers
Saturday. Waves 2 to 4 feet building to 3 to 5 feet tonight.
Waves 3 to 6 feet building to 5 to 8 feet Saturday.

$$

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

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