423
FZUS61 KBUF 100203
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EDT Sat Aug 9 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...A 30.2 inch high off the Atlantic coast will move
a bit further out to sea over the weekend, while another 30.3 inch
surface high builds across the Ohio Valley and lower Great Lakes
through the start of the new work week, lingering near the Lake
through Tuesday. Meanwhile, an area of low pressure moves east
across Ontario Canada Tuesday while deepening to 29.4 inches by
Wednesday. A trailing weak cold front will cross the lake Wednesday.

LOZ062-100900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EDT Sat Aug 9 2025

.OVERNIGHT...Southeast winds 5 to 10 knots becoming south.
Waves 1 foot or less.
.SUNDAY...Southwest winds 5 to 10 knots becoming southeast. Waves
1 foot or less.
.SUNDAY NIGHT...Southeast winds 5 to 10 knots becoming southwest.
Waves 1 foot or less.
.MONDAY...Southwest winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.MONDAY NIGHT...Southeast winds 5 to 10 knots becoming southwest.
Waves 1 foot or less.
.TUESDAY...Southwest winds 5 to 10 knots. A chance of showers
during the day, then a chance of showers and thunderstorms
Tuesday night. Waves 2 feet or less.
.WEDNESDAY...West winds 5 to 10 knots becoming northwest. A
chance of showers and thunderstorms during the day, then a chance
of showers Wednesday night. Waves around 1 foot.
.THURSDAY...North winds 5 to 10 knots becoming east. Waves 1 foot
or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-100900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 PM EDT Sat Aug 9 2025

.OVERNIGHT...Southeast winds 5 to 15 knots becoming south.
Waves 2 feet or less.
.SUNDAY...South winds 5 to 15 knots becoming east. Waves 2 feet
or less.
.SUNDAY NIGHT...East winds 5 to 15 knots becoming south. Waves
2 feet or less.
.MONDAY...South winds 10 knots or less becoming southeast. Waves
2 feet or less.
.MONDAY NIGHT...Southeast winds 10 knots or less becoming south.
Waves 1 foot or less.
.TUESDAY...South winds 5 to 10 knots becoming southwest. A chance
of showers and thunderstorms Tuesday night. Waves 1 foot or less.
.WEDNESDAY...Southwest winds 5 to 10 knots becoming northwest. A
chance of showers and thunderstorms. Waves 1 foot or less.
.THURSDAY...North winds 5 to 10 knots becoming east. Waves 1 foot
or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-100900-
MAFOR 1003/
ONTARIO WEST 1/2 12400 12500 11400 12200 11300. Waves 1 foot or
less.

ONTARIO EAST 1/2 12400 12410 11400 12200 11300. Waves 2 feet or
less.

$$