Experimental Modernized Open Lake Forecast - Lake Ontario

NZUS99 KBUF 292052
GLFLOT

Experimental Tabular Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
452 PM EDT Wed Apr 29 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...An elongated 29.9 inch low over the Upper Ohio Valley
will deepen to 29.7 inches as it tracks to near Watertown by early
this evening. This low will then lift out across Quebec tonight and
Thursday while another 29.6 inch low develops and tracks northeast
off the mid-Atlantic and New England coastlines. This second low
will then retrograde northward and then northwestward across the
Canadian Maritimes and Quebec respectively Friday and Saturday. A
third 29.5 inch low will then track from the southeastern states
northeastward into the western Atlantic Saturday through Sunday...
while a 29.8 inch high ridges across the Lower Great Lakes.

LOZ062-300200-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
452 PM EDT Wed Apr 29 2026

.Tonight...
Weather.............Rain, then mostly cloudy after midnight.
Sfc winds...........Northwest 10 to 15 knots.
100-ft winds........Northwest 15 to 20 knots.
Sig waves...........2 to 4 feet.

.THURSDAY...
Weather.............Partly sunny.
Sfc winds...........West 15 to 20 knots.
100-ft winds........West 20 to 25 knots.
Sig waves...........2 to 4 feet building to 3 to 5 feet in the
                              afternoon.
Ocnl waves..........Around 5 feet building to around 6 feet in the
                              afternoon.

.THURSDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........West 10 to 15 knots.
100-ft winds........West 15 to 20 knots.
Sig waves...........3 to 5 feet subsiding to 2 to 4 feet after
                              midnight.
Ocnl waves..........Around 6 feet subsiding to around 5 feet after
                              midnight.

.FRIDAY...
Weather.............Mostly sunny.
Sfc winds...........West 10 to 15 knots.
100-ft winds........West 15 to 20 knots.
Sig waves...........2 to 4 feet.

.FRIDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........West 10 to 15 knots.
100-ft winds........West 15 to 20 knots.
Sig waves...........2 to 4 feet.


.FORECAST DAYS 3 THROUGH 5......
.SATURDAY...West winds 10 to 15 knots. Waves 2 to 4 feet.
.SUNDAY...West winds 10 to 15 knots. Waves 2 to 4 feet.
.MONDAY...Showers likely in the afternoon. chance of showers.
Southwest winds 10 to 15 knots. Waves 2 to 4 feet.

$$

LOZ063>065-300200-
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-
452 PM EDT Wed Apr 29 2026

.Tonight...
Weather.............Rain, then rain likely after midnight.
Sfc winds...........Northwest 15 to 20 knots.
100-ft winds........Northwest 20 to 25 knots.
Sig waves...........2 to 4 feet building to 3 to 5 feet after
                              midnight.
Ocnl waves..........Around 5 feet.

.THURSDAY...
Weather.............Partly sunny.
Sfc winds...........West 15 to 20 knots.
100-ft winds........West 20 to 25 knots.
Sig waves...........3 to 5 feet.
Ocnl waves..........Around 7 feet.

.THURSDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........West 15 to 20 knots.
100-ft winds........West 20 to 25 knots.
Sig waves...........4 to 6 feet.
Ocnl waves..........Around 7 feet.

.FRIDAY...
Weather.............Mostly sunny.
Sfc winds...........West 10 to 15 knots.
100-ft winds........West 15 to 20 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet in the afternoon.

.FRIDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........West 10 to 15 knots.
100-ft winds........West 15 to 20 knots.
Sig waves...........2 to 4 feet.
Ocnl waves..........Around 5 feet in the evening.


.FORECAST DAYS 3 THROUGH 5......
.SATURDAY...West winds 10 to 15 knots. Waves 2 to 4 feet.
.SUNDAY...West winds 10 to 15 knots. Waves 2 to 4 feet.
.MONDAY...Chance of showers in the morning, then showers likely
in the afternoon and evening. chance of showers after midnight.
South winds 10 to 15 knots. Waves 2 to 4 feet.

$$

LOZ061-300200-
MAFOR 2921/
ONTARIO WEST 1/2 12716 11710 14610 11620. Waves 1 to 3 feet
tonight. Waves 2 to 4 feet Thursday.

ONTARIO EAST 1/2 11816 12716 11616 13610 11620. Waves 1 to 3 feet
tonight. Waves 2 to 4 feet building to 3 to 5 feet Thursday.

$$

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

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