925
FZUS61 KBUF 161402
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM EDT Wed Jul 16 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 slowly drift from eastern New York and
Pennsylvania to the Atlantic coastline this afternoon. A 29.7 inch
low will then track northeastward across the Great Lakes and into
Quebec tonight and Thursday, with its trailing cold front pushing
across the lake early Friday. A 30.2 inch high will then build from
the western Great Lakes to New England Friday through Saturday, then
a 29.8 inch low will push east across the Great Lakes Saturday night
and Sunday.

LOZ062-162100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 AM EDT Wed Jul 16 2025

.THIS AFTERNOON...West winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.TONIGHT...South winds 5 to 10 knots becoming southwest. A chance
of showers and thunderstorms early, then a chance of showers late
in the evening. A chance of showers late. Waves 1 foot or less.
.THURSDAY...Southwest winds 5 to 10 knots becoming west and
increasing to 15 to 25 knots in the afternoon. A chance of
showers and thunderstorms in the morning, then showers likely
with a chance of thunderstorms in the afternoon. Waves 1 foot or
less building to 3 to 6 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots becoming north and
diminishing to 10 to 15 knots. A chance of showers in the
evening. Waves 3 to 6 feet subsiding to 2 to 3 feet.
.FRIDAY...North winds 5 to 15 knots becoming south 10 knots or
less. Waves 1 to 3 feet subsiding to 1 foot or less.
.SATURDAY...Southeast winds 5 to 10 knots becoming northwest. A
chance of showers Saturday night. Waves 1 foot or less.
.SUNDAY...North winds 5 to 10 knots becoming northeast. A chance
of showers during the day. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-162100-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 AM EDT Wed Jul 16 2025

.THIS AFTERNOON...Southwest winds 5 to 10 knots becoming
southeast. A chance of showers and thunderstorms late. Waves
1 foot or less.
.TONIGHT...South winds 10 knots or less. A chance of showers and
thunderstorms. Waves 1 foot or less.
.THURSDAY...South winds 5 to 10 knots becoming southwest and
increasing to 15 to 25 knots in the afternoon. A chance of
showers and thunderstorms in the morning, then showers likely
with a chance of thunderstorms in the afternoon. Waves 1 foot or
less building to 3 to 6 feet.
.THURSDAY NIGHT...West winds 15 to 25 knots becoming north and
diminishing to 10 to 15 knots. A chance of showers and
thunderstorms in the evening. Waves 5 to 8 feet subsiding to 3 to
5 feet. Waves occasionally around 10 feet.
.FRIDAY...North winds 5 to 15 knots becoming southwest less than
10 knots. Waves 2 to 4 feet subsiding to 2 feet or less.
.SATURDAY...South winds 10 knots or less becoming southwest. A
chance of showers Saturday night. Waves 1 foot or less.
.SUNDAY...Northwest winds 5 to 10 knots becoming northeast. A
chance of showers during the day. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-162100-
MAFOR 1615/
ONTARIO WEST 1/2 11600 12300 12400 12500 11510. A chance of
showers Thursday morning. Waves 2 feet or less.

ONTARIO EAST 1/2 11500 12300 14400 11400. A chance of showers and
thunderstorms tonight and Thursday morning. Waves 1 foot or less.

$$