988
FZUS61 KBUF 212002
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM EDT Mon Jul 21 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 30.1 inch high will build south along the
Ontario/Quebec border through tonight before settling across the
Lower Great Lakes Tuesday, then off the southern New England coast
Wednesday...remaining in control into the day Thursday. A weak 29.7
inch low will then pass to our north as it heads off towards New
England all while deepening to 29.5 inches. A 30.0 inch high will
then build southeast towards New England Friday night into Saturday.

LOZ062-220300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EDT Mon Jul 21 2025

.TONIGHT...West winds 10 knots or less becoming east. Waves
1 foot or less.
.TUESDAY...East winds 10 knots or less. Waves 1 foot or less.
.TUESDAY NIGHT...East winds 5 to 10 knots becoming southeast.
Waves 1 foot or less.
.WEDNESDAY...Southeast winds 5 to 10 knots becoming east. Waves
1 foot or less.
.WEDNESDAY NIGHT...Southeast winds 5 to 10 knots becoming
southwest. Waves 2 feet or less.
.THURSDAY...Southwest winds 10 to 15 knots. A chance of showers
and thunderstorms Thursday night. Waves 1 to 3 feet.
.FRIDAY...West winds 5 to 10 knots becoming northwest. A chance
of showers and thunderstorms during the day, then a chance of
showers Friday night. Waves 1 to 2 feet.
.SATURDAY...Northeast winds 5 to 10 knots becoming southwest.
Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-220300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 PM EDT Mon Jul 21 2025

.TONIGHT...West winds 5 to 10 knots becoming northeast. Waves
1 foot or less.
.TUESDAY...East winds less than 10 knots becoming northeast.
Waves 1 foot or less.
.TUESDAY NIGHT...East winds 10 knots or less becoming south.
Waves 1 foot or less.
.WEDNESDAY...Southeast winds 10 knots or less. Waves 1 foot or
less.
.WEDNESDAY NIGHT...Southeast winds 5 to 15 knots becoming south.
Waves 2 feet or less.
.THURSDAY...Southwest winds 10 to 15 knots. A chance of showers
Thursday night. Waves 1 to 3 feet.
.FRIDAY...West winds 5 to 10 knots. A chance of showers and
thunderstorms. Waves 2 feet or less.
.SATURDAY...North winds 5 to 10 knots becoming south. Waves
1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-220300-
MAFOR 2121/
ONTARIO WEST 1/2 11500 11600 11800 11100 14200. Waves 1 foot or
less.

ONTARIO EAST 1/2 11600 11700 11800 11100 12200 12100. Waves 1
foot or less.

$$