Experimental Modernized Open Lake Forecast

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Spring 2026 Skywarn Spotter Training Schedule

NZUS99 KBUF 020852
GLFLOT

Experimental Tabular Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
452 AM EDT Thu Apr 2 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 today. A
29.6 inch low will move into the central Great Lakes to before
reaching southern Quebec Friday afternoon, lifting a frontal
boundary northward over the lake tonight. 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.

LOZ062-021400-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
452 AM EDT Thu Apr 2 2026

.Today...
Weather.............Mostly cloudy, then showers likely in the
                              afternoon.
Sfc winds...........East to 30 knots.
100-ft winds........East gales to 35 knots.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 12 feet.

.TONIGHT...
Weather.............Mostly cloudy with chance of showers.
Sfc winds...........East 15 to 20 knots becoming south after
                              midnight.
100-ft winds........East 20 to 25 knots becoming south after
                              midnight.
Sig waves...........6 to 9 feet subsiding to 4 to 6 feet after
                              midnight.
Ocnl waves..........Around 11 feet subsiding to around 7 feet after
                              midnight.

.FRIDAY...
Weather.............Partly sunny with chance of showers, then
                              mostly sunny 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.

.FRIDAY NIGHT...
Weather.............Partly cloudy.
Sfc winds...........Northwest 10 to 15 knots.
100-ft winds........Northwest 15 to 20 knots.
Sig waves...........5 to 7 feet subsiding to 2 to 4 feet after
                              midnight.
Ocnl waves..........Around 9 feet subsiding to around 5 feet after
                              midnight.

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

$$

LOZ063>065-021400-
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 AM EDT Thu Apr 2 2026

.Today...
Weather.............Mostly cloudy, then chance of showers in the
                              afternoon.
Sfc winds...........Northeast 15 to 20 knots.
100-ft winds........Northeast 20 to 25 knots.
Sig waves...........5 to 7 feet.
Ocnl waves..........Around 9 feet.

.TONIGHT...
Weather.............Mostly cloudy with chance of showers.
Sfc winds...........East 20 to 25 knots becoming southeast to 30
                              knots after midnight.
100-ft winds........East to 30 knots becoming southeast gales to 35
                              knots after midnight.
Sig waves...........6 to 9 feet.
Ocnl waves..........Around 11 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...........6 to 9 feet.
Ocnl waves..........Around 11 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 8 feet.

.FORECAST DAYS 3 THROUGH 5......
.SATURDAY...Chance of showers in the morning, then showers likely
in the afternoon. Showers. East winds 15 to 20 knots. Waves 4 to
6 feet.
.SUNDAY...Windy. Showers in the morning. Southwest winds to
30 knots. Waves 8 to 12 feet.
.MONDAY...West winds 15 to 20 knots. Waves 6 to 9 feet.

$$

LOZ061-021400-
MAFOR 0209/
ONTARIO WEST 1/2 11220 12230 11236 11230 11220 11420 11526. Waves
3 to 6 feet building to 5 to 8 feet today. Waves 4 to 7 feet
subsiding to 3 to 5 feet tonight.

ONTARIO EAST 1/2 11120 14220 11330 11340 11440. A chance of rain
showers this afternoon. A chance of showers tonight. Waves 3 to 5
feet today. Waves 3 to 5 feet building to 5 to 8 feet tonight.

$$