568
FZUS61 KBUF 060202
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EDT Fri Jun 5 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 30.1 inch high will very slowly drift away from the
Southeast coast tonight. A weak cold front will then move south
across the lower Great Lakes Saturday and Saturday night. Another
30.2 inch high over Quebec Sunday will build southeast into New
England Monday, then remain near or just off the east coast through
Wednesday.

LOZ062-060900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EDT Fri Jun 5 2026

.OVERNIGHT...Southwest winds 5 to 15 knots. A chance of
showers, then showers late. Waves 1 to 2 feet.
.SATURDAY...Southwest winds 15 to 20 knots becoming west. Showers
likely early, then a chance of showers late in the morning. A
chance of showers and thunderstorms in the afternoon. Waves 2 to
4 feet.
.SATURDAY NIGHT...West winds 15 to 20 knots diminishing to 5 to
15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.SUNDAY...Northwest winds 5 to 10 knots becoming west. Waves
2 feet or less.
.SUNDAY NIGHT...West winds 10 knots or less becoming east. Waves
1 foot or less.
.MONDAY...East winds 5 to 15 knots. Waves 2 feet or less.
.TUESDAY...East winds 10 knots or less becoming southeast. A
chance of showers Tuesday night. Waves 1 foot or less.
.WEDNESDAY...Southeast winds 10 knots or less becoming southwest.
A chance of showers. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-060900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 PM EDT Fri Jun 5 2026

.OVERNIGHT...South winds 5 to 10 knots. A chance of showers
after midnight. Showers likely late. Waves 1 foot or less.
.SATURDAY...Southwest winds 10 to 15 knots becoming west 15 to
20 knots. Showers early, then a chance of showers. A chance of
showers and thunderstorms late. Waves 1 to 2 feet building to
3 to 5 feet.
.SATURDAY NIGHT...West winds 15 to 20 knots diminishing to 10 to
15 knots. A chance of showers and thunderstorms in the evening,
then a chance of showers overnight. Waves 3 to 5 feet subsiding
to 1 to 3 feet.
.SUNDAY...West winds 5 to 15 knots. Waves 1 to 3 feet.
.SUNDAY NIGHT...Northwest winds 10 knots or less becoming east.
Waves 2 feet or less.
.MONDAY...East winds 5 to 10 knots becoming southeast. Waves
1 foot or less.
.TUESDAY...Southeast winds 10 knots or less becoming south. Waves
1 foot or less.
.WEDNESDAY...Southeast winds 10 knots or less becoming south. A
chance of showers. Waves 1 foot or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-060900-
MAFOR 0603/
ONTARIO WEST 1/2 12510 11526 12520 12620 11610. A chance of
thunderstorms Saturday afternoon. Waves 1 to 2 feet overnight.
Waves 2 to 4 feet Saturday. Waves 3 to 5 feet subsiding to 2 to 4
feet Saturday evening.

ONTARIO EAST 1/2 12400 11516 12510 13620. Waves 1 foot or less
overnight. Waves 1 to 3 feet building to 3 to 5 feet Saturday.
Waves 3 to 5 feet Saturday evening.

$$