Great Lakes Forecast
Issued by NWS

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624
FZUS61 KBUF 312003
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM EDT Sat Oct 31 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 30.5 inch high will settle over the northern Mid
Atlantic states Sunday through Monday before drifting off the
eastern seaboard Tuesday. A 29.5 inch low is then forecast to move
very slowly from the upper Mississippi Valley Tuesday to the upper
Great Lakes by Wednesday, and then into western Quebec by Thursday
and Friday.

LOZ062-010300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EDT Sat Oct 31 2026

.TONIGHT...West winds 5 to 15 knots becoming southwest less than
10 knots. Waves 2 feet or less.
.SUNDAY...South winds less than 10 knots. Waves 1 foot or less.
.SUNDAY NIGHT...Light and variable winds becoming southwest 5 to
10 knots. Waves 1 foot or less.
.MONDAY...Southwest winds 5 to 10 knots becoming light and
variable. Waves 1 foot or less.
.MONDAY NIGHT...South winds less than 10 knots. Waves 1 foot or
less.
.TUESDAY...South winds 5 to 15 knots. A chance of showers during
the day. Waves 2 feet or less.
.WEDNESDAY...South winds 10 to 15 knots. A chance of showers.
Waves 1 to 2 feet.
.THURSDAY...South winds 5 to 15 knots becoming east. A chance of
showers. Waves 1 to 2 feet.

$$

LOZ063>065-010300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 PM EDT Sat Oct 31 2026

.TONIGHT...West winds 5 to 15 knots becoming southwest less than
10 knots. Waves 2 feet or less.
.SUNDAY...Southwest winds 5 to 10 knots becoming southeast. Waves
1 foot or less.
.SUNDAY NIGHT...Southeast winds 5 to 15 knots becoming southwest.
Waves 2 feet or less.
.MONDAY...Southwest winds 5 to 10 knots becoming south. Waves
2 feet or less.
.MONDAY NIGHT...Southeast winds 10 knots or less becoming south.
Waves 1 foot or less.
.TUESDAY...South winds 10 to 15 knots increasing to 15 to
20 knots. A chance of showers during the day. Waves 1 to 3 feet.
.WEDNESDAY...South winds 15 to 20 knots. A chance of showers.
Waves 2 to 4 feet subsiding to 1 to 3 feet.
.THURSDAY...South winds 10 to 15 knots becoming southeast. A
chance of showers. Waves 1 to 3 feet.

$$

LOZ061-010300-
MAFOR 3121/
ONTARIO WEST 1/2 11610 14500 12400 11300. Waves 2 feet or less.

ONTARIO EAST 1/2 11610 12600 12500 13400. Waves 2 feet or less.

$$