106
FZUS61 KBUF 130202
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EDT Wed Aug 12 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 trough averaging 29.7 inches will move across the Lakes this
evening where it will linger through Thursday. A cold front then
sweeps across the Lake Thursday night, with a 30.2 inch high
pressure ridge building in from the upper Great Lakes on Friday,
settling over the lower Great Lakes region on Saturday. A low
averaging 29.7 inches is expected to approach the Lake Sunday. The
low will move northwest of the Lake Monday.

LOZ062-130900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EDT Wed Aug 12 2026

.OVERNIGHT...Southwest winds 10 knots or less becoming
northwest. Waves 1 foot or less.
.THURSDAY...Northwest winds 10 knots or less becoming southwest.
Waves 1 foot or less.
.THURSDAY NIGHT...West winds 10 knots or less becoming north.
Waves 1 foot or less.
.FRIDAY...North winds 10 knots or less becoming northeast. Waves
1 foot or less.
.FRIDAY NIGHT...Northeast winds 10 knots or less. Waves 1 foot or
less.
.SATURDAY...East winds 5 to 10 knots becoming southeast. Waves
1 foot or less.
.SUNDAY...Southeast winds 5 to 10 knots becoming northwest. A
chance of showers and thunderstorms. Waves 1 foot or less.
.MONDAY...Northwest winds 5 to 10 knots. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-130900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 PM EDT Wed Aug 12 2026

.OVERNIGHT...Southwest winds 10 knots or less becoming
west. A chance of showers and thunderstorms. Waves 1 foot or
less.
.THURSDAY...Northwest winds 5 to 10 knots becoming west. Waves
1 foot or less.
.THURSDAY NIGHT...West winds 10 knots or less becoming north.
Waves 1 foot or less.
.FRIDAY...North winds 10 knots or less. Waves 1 foot or less.
.FRIDAY NIGHT...North winds 5 to 10 knots becoming northeast.
Waves 1 foot or less.
.SATURDAY...Northeast winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.SUNDAY...Southeast winds 5 to 10 knots becoming northwest. A
chance of showers and thunderstorms. Waves 1 foot or less.
.MONDAY...North winds 5 to 10 knots becoming west. Waves 1 foot
or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-130900-
MAFOR 1303/
ONTARIO WEST 1/2 11600 13700 13600 11700. Waves 1 foot or less.

ONTARIO EAST 1/2 11500 11600 13700 12600 11700. A chance of
showers and thunderstorms late this evening, then a chance of
thunderstorms overnight. Waves 1 foot or less.

$$