NZUS99 KBUF 151752
GLFLOT
Experimental Tabular Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1252 PM EST Sat Nov 15 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 29.3 inch low will track from Lake Superior this
afternoon to central New England by early Sunday morning. As the low
tracks just north of the Lake, it will push an attendant warm front
across the Lake this afternoon, followed by a cold front crossing
the Lake tonight. This low will deepen further to 28.9 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.
LOZ062-160300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1252 PM EST Sat Nov 15 2025
...GALE WARNING IN EFFECT FROM MIDNIGHT EST TONIGHT THROUGH LATE
SUNDAY NIGHT...
.Tonight...
Weather.............Mostly cloudy with chance of showers and
thunderstorms, then mostly cloudy with chance
of showers after midnight.
Sfc winds...........Southwest 20 to 25 knots increasing to west
gales to 35 knots after midnight.
100-ft winds........Southwest to 30 knots increasing to west gales
to 45 knots after midnight.
Sig waves...........6 to 9 feet building to 12 to 16 feet after
midnight.
Ocnl waves..........Around 10 feet building to around 19 feet after
midnight.
.SUNDAY...
Weather.............Partly sunny with chance of showers, then
partly sunny with chance of snow showers in the
afternoon.
Sfc winds...........Northwest gales to 35 knots.
100-ft winds........Northwest gales to 45 knots.
Sig waves...........12 to 16 feet.
Ocnl waves..........Around 19 feet.
.SUNDAY NIGHT...
Weather.............Mostly cloudy with chance of snow showers.
Sfc winds...........Northwest gales to 35 knots decreasing to 30
knots after midnight.
100-ft winds........Northwest gales to 45 knots decreasing to 35
knots after midnight.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 15 feet.
.MONDAY...
Weather.............Partly sunny.
Sfc winds...........Northwest to 30 knots.
100-ft winds........Northwest gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.
.MONDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........West 20 to 25 knots.
100-ft winds........West to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 10 feet.
.FORECAST DAYS 3 THROUGH 5......
.TUESDAY...West winds 5 to 10 knots. Waves 3 to 5 feet.
.WEDNESDAY...North winds 5 to 10 knots. Waves 1 to 3 feet.
.THURSDAY...Chance of showers in the evening. showers likely
after midnight. East winds 5 to 10 knots. Waves 2 to 4 feet.
$$
LOZ063-160300-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
1252 PM EST Sat Nov 15 2025
...GALE WARNING IN EFFECT FROM MIDNIGHT EST TONIGHT THROUGH LATE
SUNDAY NIGHT...
.Tonight...
Weather.............Showers, then mostly cloudy after midnight.
Sfc winds...........South 20 to 25 knots increasing to west gales
to 40 knots after midnight.
100-ft winds........South to 30 knots increasing to west storm
force winds to 50 knots after midnight.
Sig waves...........6 to 9 feet building to 14 to 18 feet after
midnight.
Ocnl waves..........Around 10 feet building to around 22 feet after
midnight.
.SUNDAY...
Weather.............Mostly cloudy with chance of showers, then
mostly cloudy with chance of snow showers in
the afternoon.
Sfc winds...........West gales to 40 knots.
100-ft winds........West storm force winds to 50 knots.
Sig waves...........14 to 18 feet.
Ocnl waves..........Around 23 feet.
.SUNDAY NIGHT...
Weather.............Mostly cloudy with chance of snow showers.
Sfc winds...........Northwest gales to 40 knots.
100-ft winds........Northwest storm force winds to 50 knots.
Sig waves...........12 to 16 feet.
Ocnl waves..........Around 19 feet.
.MONDAY...
Weather.............Mostly cloudy.
Sfc winds...........Northwest gales to 35 knots.
100-ft winds........Northwest gales to 45 knots.
Sig waves...........10 to 14 feet.
Ocnl waves..........Around 16 feet.
.MONDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Northwest to 30 knots.
100-ft winds........Northwest gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.
.FORECAST DAYS 3 THROUGH 5......
.TUESDAY...West winds 10 to 15 knots. Waves 3 to 5 feet.
.WEDNESDAY...Northwest winds 5 to 10 knots. Waves 1 to 3 feet.
.THURSDAY...Chance of showers in the evening. showers likely
after midnight. East winds 10 to 15 knots. Waves 2 to 4 feet.
$$
LOZ064-065-160300-
Lake Ontario open waters from Sodus Bay to Mexico Bay-
Lake Ontario open waters from Mexico Bay to the Saint Lawrence
River-
1252 PM EST Sat Nov 15 2025
...GALE WARNING IN EFFECT FROM MIDNIGHT EST TONIGHT THROUGH LATE
SUNDAY NIGHT...
.Tonight...
Weather.............Showers, then cloudy with chance of showers
after midnight.
Sfc winds...........Southeast 20 to 25 knots increasing to west
gales to 40 knots after midnight.
100-ft winds........Southeast to 30 knots increasing to west storm
force winds to 50 knots after midnight.
Sig waves...........5 to 7 feet building to 14 to 18 feet after
midnight.
Ocnl waves..........Around 9 feet building to around 22 feet after
midnight.
.SUNDAY...
Weather.............Showers likely, then mostly cloudy with chance
of snow showers in the afternoon.
Sfc winds...........Northwest gales to 40 knots.
100-ft winds........Northwest storm force winds to 50 knots.
Sig waves...........14 to 18 feet.
Ocnl waves..........Around 24 feet.
.SUNDAY NIGHT...
Weather.............Cloudy with chance of snow showers.
Sfc winds...........Northwest gales to 40 knots.
100-ft winds........Northwest storm force winds to 50 knots.
Sig waves...........12 to 16 feet.
Ocnl waves..........Around 20 feet.
.MONDAY...
Weather.............Mostly cloudy with chance of snow showers, then
mostly cloudy in the afternoon.
Sfc winds...........Northwest gales to 35 knots.
100-ft winds........Northwest gales to 45 knots.
Sig waves...........10 to 14 feet.
Ocnl waves..........Around 16 feet.
.MONDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........Northwest to 30 knots.
100-ft winds........Northwest gales to 35 knots.
Sig waves...........8 to 12 feet.
Ocnl waves..........Around 13 feet.
.FORECAST DAYS 3 THROUGH 5......
.TUESDAY...Chance of rain and snow showers in the morning. West
winds 10 to 15 knots. Waves 4 to 6 feet.
.WEDNESDAY...Northwest winds 5 to 10 knots. Waves 1 to 3 feet.
.THURSDAY...Chance of showers in the evening. showers likely
after midnight. East winds 10 to 15 knots. Waves 2 to 4 feet.
$$
LOZ061-160300-
MAFOR 1522/
ONTARIO WEST 1/2...GALE WARNING IN EFFECT...11526 11630 12640
11740 13750. A chance of thunderstorms early this evening. A
chance of snow showers Sunday afternoon. Waves 2 to 4 feet
building to 10 to 13 feet tonight. Waves 10 to 14 feet Sunday.
ONTARIO EAST 1/2...GALE WARNING IN EFFECT...11426 11536 11640
12650 11756 12750. A chance of snow showers Sunday afternoon.
Waves 2 to 4 feet building to 11 to 15 feet tonight. Waves 11 to
16 feet Sunday.
$$
Occasional waves will only be displayed when values meet or exceed 5 feet / 2 meters.
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