Great Lakes Forecast
Issued by NWS

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194
FZUS61 KBUF 061503
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM EST Fri Mar 6 2026

For waters beyond five nautical miles of shore on Lake Ontario

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 warm front will lift north across the lower Great
Lakes today. A 29.6 inch low will lift across the upper Great Lakes
Saturday, with its trailing cold front crossing the lake Saturday
night. A large 30.1 inch high will then move from the lower Ohio
Valley to the Mid Atlantic region Sunday and Monday while ridging
north across the lake. A 28.9 inch low may move across James Bay
Monday while pressure averages 29.9 inches across the lake Tuesday.

LOZ062-063-062200-
Lake Ontario open waters from the Niagara River to Sodus Bay-
1002 AM EST Fri Mar 6 2026

.THIS AFTERNOON...East winds 15 to 20 knots diminishing to 10 to
15 knots. Waves 3 to 5 feet subsiding to 1 to 3 feet.
.TONIGHT...East winds 10 to 15 knots becoming south and
increasing to 15 to 25 knots. A chance of rain showers late in
the evening. Rain showers with a chance of thunderstorms after
midnight. Waves 1 to 3 feet building to 3 to 5 feet.
.SATURDAY...South winds 15 to 25 knots becoming southwest to
30 knots. A chance of showers in the morning, then showers with a
chance of thunderstorms in the afternoon. Waves 3 to 6 feet
building to 4 to 7 feet. Waves occasionally around 9 feet.
.SATURDAY NIGHT...Southwest winds 15 to 25 knots becoming west.
Rain showers with a chance of thunderstorms in the evening, then
a chance of rain showers overnight. Waves 4 to 7 feet subsiding
to 3 to 6 feet. Waves occasionally around 9 feet.
.SUNDAY...West winds 15 to 25 knots becoming southwest. Waves
3 to 6 feet.
.MONDAY...Southwest winds 15 to 25 knots becoming west and
diminishing to 10 to 15 knots. Waves 3 to 6 feet subsiding to
2 to 4 feet.
.TUESDAY...Northwest winds 10 to 15 knots becoming east and
increasing to 15 to 25 knots. A chance of rain showers during the
day, then rain showers Tuesday night. Waves 1 to 3 feet building
to 4 to 7 feet. Waves occasionally around 9 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ064-065-062200-
Lake Ontario open waters from Sodus Bay to the Saint Lawrence
River-
1002 AM EST Fri Mar 6 2026

.THIS AFTERNOON...East winds 10 to 15 knots becoming southeast.
Waves 2 feet or less.
.TONIGHT...Southeast winds 15 to 25 knots becoming south to
30 knots. Rain showers after midnight. Waves 1 to 3 feet building
to 3 to 6 feet.
.SATURDAY...South winds 15 to 25 knots. A chance of rain showers
and thunderstorms in the morning, then rain showers with a chance
of thunderstorms in the afternoon. Waves 3 to 6 feet.
.SATURDAY NIGHT...Southwest winds 15 to 20 knots becoming west.
Rain showers with a chance of thunderstorms in the evening, then
rain showers likely overnight. Waves 3 to 6 feet.
.SUNDAY...West winds 15 to 20 knots becoming south. Waves 3 to
6 feet subsiding to 2 to 4 feet.
.MONDAY...South winds 15 to 20 knots becoming west 10 to
15 knots. Waves 2 to 4 feet.
.TUESDAY...West winds 5 to 10 knots becoming northeast and
increasing to 15 to 25 knots. A chance of rain showers during the
day, then rain showers Tuesday night. Waves 1 to 3 feet building
to 3 to 6 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-062200-
MAFOR 0616/
ONTARIO WEST 1/2 11210 12200 11210 11410 11516 11526 11520. Waves
3 to 5 feet subsiding to 1 to 3 feet this afternoon. Waves 1 to 3
feet tonight. Waves 2 to 4 feet building to 3 to 5 feet Saturday
morning.

ONTARIO EAST 1/2 11210 11310 12320 11336 11436 12430. Waves 2 to
4 feet subsiding to 1 to 3 feet this afternoon. Waves 1 to 3 feet
building to 3 to 6 feet tonight. Waves 3 to 6 feet Saturday
morning.

$$