631
FZUS61 KBUF 010202
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EDT Sun Aug 31 2025

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...The center of a 30.3 inch high will drift east across
the lower Great Lakes tonight, before shifting east across New
England on Monday, then into the Canadian Maritimes Tuesday. A
weaker 30.1 inch high will remain in place across the Great Lakes
Tuesday before drifting off the eastern seaboard Wednesday.
Meanwhile, a 29.4 inch low will move across the upper Great Lakes
Wednesday, eventually sending an attendant cold front across the
Lake later in the week.

LOZ062-010900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EDT Sun Aug 31 2025

.OVERNIGHT...Light and variable winds. Waves 1 foot or
less.
.MONDAY...Light and variable winds becoming northeast 5 to
10 knots. Waves 1 foot or less.
.MONDAY NIGHT...East winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.TUESDAY...Southeast winds less than 10 knots. Waves 1 foot or
less.
.TUESDAY NIGHT...Southeast winds 10 knots or less becoming
southwest. Waves 1 foot or less.
.WEDNESDAY...Southwest winds 10 knots or less becoming south
10 to 15 knots. A chance of showers Wednesday night. Waves 2 feet
or less.
.THURSDAY...South winds 15 to 20 knots becoming southwest 10 to
15 knots. Showers. Waves 1 to 3 feet.
.FRIDAY...Southwest winds 10 to 15 knots increasing to 15 to
20 knots. A chance of showers. Waves 2 to 4 feet building to 3 to
6 feet.

$$

LOZ063>065-010900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 PM EDT Sun Aug 31 2025

.OVERNIGHT...Northwest winds less than 10 knots. Waves
1 foot or less.
.MONDAY...Light and variable winds. Waves 1 foot or less.
.MONDAY NIGHT...North winds less than 10 knots. Waves 1 foot or
less.
.TUESDAY...Light and variable winds. Waves 1 foot or less.
.TUESDAY NIGHT...South winds 10 knots or less. Waves 1 foot or
less.
.WEDNESDAY...South winds 5 to 10 knots increasing to 15 to
20 knots. Waves 1 foot or less building to 1 to 3 feet.
.THURSDAY...South winds 15 to 20 knots becoming southwest.
Showers. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.FRIDAY...Southwest winds 10 to 15 knots increasing to 15 to
25 knots. Showers likely during the day, then a chance of showers
Friday night. Waves 1 to 3 feet building to 3 to 6 feet.

$$

LOZ061-010900-
MAFOR 0103/
ONTARIO WEST 1/2 12300 12400 12100 12200. Waves 1 foot or less.

ONTARIO EAST 1/2 11700 11800 12300 11100 12800 11100. Waves 1
foot or less.

$$