613
FZUS61 KBUF 111402
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM EDT Fri Sep 11 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 high pressure ridge averaging 30.0 inches over the
lower Great Lakes region this afternoon, will slide east into New
England tonight, before exiting toward the New England coast on
Saturday. A warm front will sweep northeastward across Lake Ontario
Saturday evening through Saturday night before a cold front sweeps
eastward across the Lake on Sunday. Behind the cold front, a 30.2
inch ridge will slide eastward across the Lake through Monday. On
Tuesday, the ridge should exit toward New England and allow a warm
front to sweep northeastward across Lake Ontario.

LOZ062-112100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 AM EDT Fri Sep 11 2026

.THIS AFTERNOON...Northwest winds 10 knots or less becoming
southwest. Waves 1 foot or less.
.TONIGHT...South winds 5 to 10 knots becoming southeast. Waves
1 foot or less.
.SATURDAY...Southeast winds 10 knots or less becoming east. Waves
1 foot or less.
.SATURDAY NIGHT...Southeast winds 5 to 10 knots becoming
southwest. Waves 2 feet or less.
.SUNDAY...West winds 10 to 15 knots becoming northwest 15 to
20 knots. Waves 1 to 3 feet.
.MONDAY...North winds 5 to 15 knots becoming southeast. Waves
1 to 3 feet.
.TUESDAY...South winds 15 to 20 knots becoming west and
diminishing to around 10 knots. A chance of showers during the
day, then showers likely Tuesday night. Waves 1 to 3 feet
building to 2 to 4 feet, then subsiding to 1 to 3 feet.

$$

LOZ063>065-112100-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 AM EDT Fri Sep 11 2026

.THIS AFTERNOON...North winds 10 knots or less becoming west.
Waves 1 foot or less.
.TONIGHT...West winds 10 knots or less becoming south. Waves
1 foot or less.
.SATURDAY...South winds 10 to 15 knots becoming southeast. Waves
1 to 3 feet.
.SATURDAY NIGHT...South winds 15 to 20 knots becoming southwest.
A chance of showers. Waves 1 to 3 feet building to 2 to 4 feet,
then subsiding to 1 to 3 feet.
.SUNDAY...Southwest winds 10 to 15 knots becoming northwest 15 to
20 knots. A chance of showers during the day. Waves 1 to 3 feet
building to 2 to 4 feet.
.MONDAY...North winds 5 to 15 knots becoming southeast 15 to
20 knots. Waves 1 to 3 feet.
.TUESDAY...South winds 15 to 25 knots becoming southwest. A
chance of showers during the day, then showers likely Tuesday
night. Waves 3 to 5 feet subsiding to 1 to 3 feet.

$$

LOZ061-112100-
MAFOR 1115/
ONTARIO WEST 1/2 11700 11600 12400 13300 11400. Waves 1 foot or
less.

ONTARIO EAST 1/2 11800 11700 11600 11500 12400 12410. Waves 2
feet or less.

$$