Experimental Modernized Open Lake Forecast - Lake Ontario

NZUS99 KBUF 012053
GLFLOT

Experimental Tabular Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
453 PM EDT Wed Apr 1 2026

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 30.7 inch high will build east across Quebec tonight
through Thursday. A 29.6 inch low is then forecast to move into the
central Great Lakes Thursday night before reaching southern Quebec
Friday afternoon, lifting the frontal boundary to the south back
northward over the Lake Thursday evening. A 29.4 inch surface low
will track through the central Great Lakes Saturday, then into
Quebec Saturday night and Sunday, while dragging a cold front across
the lake Saturday night.

LOZ062-020200-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
453 PM EDT Wed Apr 1 2026

.Tonight...
Weather.............Mostly cloudy.
Sfc winds...........East 10 to 15 knots increasing to northeast 20
                              to 25 knots after midnight.
100-ft winds........East 15 to 20 knots increasing to northeast to
                              30 knots after midnight.
Sig waves...........2 to 4 feet building to 5 to 7 feet after
                              midnight.
Ocnl waves..........Around 8 feet after midnight.

.THURSDAY...
Weather.............Mostly cloudy with chance of showers.
Sfc winds...........East 20 to 25 knots.
100-ft winds........East to 30 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 10 feet.

.THURSDAY NIGHT...
Weather.............Showers likely.
Sfc winds...........East 15 to 20 knots becoming southeast 10 to 15
                              knots after midnight.
100-ft winds........East 20 to 25 knots becoming southeast 15 to 20
                              knots after midnight.
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.

.FRIDAY...
Weather.............Mostly cloudy with chance of showers, then
                              mostly sunny with chance of showers in the
                              afternoon.
Sfc winds...........Southwest 20 to 25 knots.
100-ft winds........Southwest to 30 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 8 feet.

.FRIDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........West 15 to 20 knots becoming northwest 5 to 10
                              knots after midnight.
100-ft winds........West 20 to 25 knots becoming northwest 10 to 15
                              knots after midnight.
Sig waves...........4 to 6 feet subsiding to 2 to 4 feet after
                              midnight.
Ocnl waves..........Around 8 feet subsiding to around 5 feet after
                              midnight.


.FORECAST DAYS 3 THROUGH 5......
.SATURDAY...Chance of showers in the morning, then showers likely
in the afternoon and evening. showers after midnight. East winds
15 to 20 knots. Waves 4 to 6 feet.
.SUNDAY...Windy. West winds to 30 knots. Waves 6 to 9 feet.
.MONDAY...West winds 10 to 15 knots. Waves 4 to 6 feet.

$$

LOZ063>065-020200-
Lake Ontario open waters from Hamlin Beach to Sodus Bay-
Lake Ontario open waters from Sodus Bay to Mexico Bay-
Lake Ontario open waters from Mexico Bay to the Saint Lawrence
River-
453 PM EDT Wed Apr 1 2026

.Tonight...
Weather.............Mostly cloudy.
Sfc winds...........North 15 to 20 knots.
100-ft winds........Northeast 20 to 25 knots.
Sig waves...........2 to 4 feet building to 4 to 6 feet after
                              midnight.
Ocnl waves..........Around 7 feet after midnight.

.THURSDAY...
Weather.............Mostly cloudy with chance of showers.
Sfc winds...........Northeast 15 to 20 knots.
100-ft winds........Northeast 20 to 25 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 8 feet.

.THURSDAY NIGHT...
Weather.............Mostly cloudy with chance of showers, then
                              mostly cloudy with showers likely after
                              midnight.
Sfc winds...........East 15 to 20 knots increasing to southeast to
                              30 knots after midnight.
100-ft winds........East 20 to 25 knots increasing to southeast
                              gales to 35 knots after midnight.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.

.FRIDAY...
Weather.............Partly sunny with chance of showers.
Sfc winds...........South 20 to 25 knots.
100-ft winds........South to 30 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.

.FRIDAY NIGHT...
Weather.............Mostly cloudy.
Sfc winds...........West 15 to 20 knots becoming northwest 5 to 10
                              knots after midnight.
100-ft winds........West 20 to 25 knots becoming northwest 10 to 15
                              knots after midnight.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.


.FORECAST DAYS 3 THROUGH 5......
.SATURDAY...Chance of showers. Showers. East winds 10 to
15 knots. Waves 4 to 6 feet.
.SUNDAY...Windy. Chance of showers. Southwest winds to 30 knots.
Waves 8 to 12 feet.
.MONDAY...West winds 15 to 20 knots. Waves 6 to 9 feet.

$$

LOZ061-020200-
MAFOR 0121/
ONTARIO WEST 1/2 11100 11210 12120 11220 12230 11236. Waves 2
feet or less building to 3 to 5 feet tonight. Waves 4 to 7 feet
Thursday.

ONTARIO EAST 1/2 11100 11110 14120 12220. A chance of rain
showers Thursday. Waves 2 feet or less building to 3 to 5 feet
tonight. Waves 3 to 5 feet Thursday.

$$

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

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