379
FZUS61 KBUF 160802
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 AM EDT Sun Aug 16 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 high pressure ridge continues to exit eastward before a warm front
drifts northeastward across Lake Ontario this evening and is
followed quickly by the eastward passage of a cold front this
evening through tonight. Behind the cold front, a trough averaging
29.8 inches should linger over Lake Ontario through Monday. A 30.0
inch high should build from the Upper Midwest Monday night and
traverse Lake Ontario on Tuesday. The ridge should begin to exit
eastward Tuesday night before a cold front sweeps southeastward
across Lake Ontario Wednesday through Wednesday night. Behind the
cold front, a 30.1 inch high should build from the western Great
Lakes through this Thursday.

LOZ062-161500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 AM EDT Sun Aug 16 2026

.TODAY...Southeast winds 5 to 15 knots becoming east. Waves 1 to
3 feet.
.TONIGHT...East winds 10 knots or less becoming west. A chance of
showers and thunderstorms in the evening, then a chance of
showers after midnight. Waves 1 foot or less.
.MONDAY...Northwest winds 5 to 10 knots becoming west. Waves
2 feet or less.
.MONDAY NIGHT...Northwest winds 5 to 10 knots. Waves 2 feet or
less.
.TUESDAY...West winds 10 knots or less becoming southwest 10 to
15 knots. A chance of showers and thunderstorms Tuesday night.
Waves 2 feet or less.
.WEDNESDAY...West winds 10 to 15 knots becoming northwest. A
chance of showers and thunderstorms during the day, then a chance
of showers Wednesday night. Waves 1 to 2 feet.
.THURSDAY...Northwest winds 5 to 10 knots. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-161500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 AM EDT Sun Aug 16 2026

.TODAY...Southeast winds 5 to 15 knots. Waves 1 to 3 feet
subsiding to 1 foot or less.
.TONIGHT...Southeast winds 15 to 20 knots becoming southwest
10 to 15 knots. A chance of showers and thunderstorms through the
early overnight, then a chance of showers late. Waves 1 to
3 feet.
.MONDAY...West winds 5 to 10 knots becoming northwest. A chance
of showers. Waves 2 feet or less.
.MONDAY NIGHT...West winds 10 knots or less becoming north. Waves
2 feet or less.
.TUESDAY...Northwest winds 10 knots or less becoming southwest
10 to 15 knots. A chance of showers Tuesday night. Waves 2 feet
or less.
.WEDNESDAY...West winds 5 to 15 knots becoming northwest. Showers
likely with a chance of thunderstorms during the day, then a
chance of showers and thunderstorms Wednesday night. Waves 1 to
2 feet.
.THURSDAY...Northwest winds 5 to 10 knots becoming west. Waves
2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-161500-
MAFOR 1609/
ONTARIO WEST 1/2 11310 11210 13200 11400 11500 11600. A chance of
showers and thunderstorms this evening. Waves 1 to 3 feet today.
Waves 1 foot or less tonight.

ONTARIO EAST 1/2 11310 13300 11310 11420 11410 11510. A chance of
showers and thunderstorms tonight. Waves 2 feet or less today.
Waves 1 to 3 feet tonight.

$$