278
FZUS61 KBUF 091402
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM EDT Wed Jul 9 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 across the Lower Great Lakes
today. A broad 29.9 inch surface low will then track across the Mid-
Atlantic States Thursday and Friday. A 29.7 inch low will lift north
of the Central Great Lake Saturday, bringing a cold front to the
western waters of the Lake by Saturday evening.

LOZ062-092100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 AM EDT Wed Jul 9 2025

.THIS AFTERNOON...Southwest winds less than 10 knots becoming
south. A chance of showers and thunderstorms late. Waves 1 foot
or less.
.TONIGHT...Southeast winds less than 10 knots becoming southwest.
A chance of showers and thunderstorms in the evening. Waves
1 foot or less.
.THURSDAY...Southwest winds 5 to 10 knots. Waves 1 foot or less.
.THURSDAY NIGHT...South winds less than 10 knots becoming
northwest. Waves 1 foot or less.
.FRIDAY...Northwest winds less than 10 knots becoming south.
Waves 1 foot or less.
.SATURDAY...Southeast winds 5 to 10 knots becoming south. A
chance of showers Saturday night. Waves 1 foot or less.
.SUNDAY...Southwest winds 5 to 10 knots becoming west. A chance
of showers and thunderstorms. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-092100-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 AM EDT Wed Jul 9 2025

.THIS AFTERNOON...Southwest winds less than 10 knots becoming
north. Waves 1 foot or less.
.TONIGHT...East winds less than 10 knots becoming south. A chance
of showers late in the evening. A chance of showers and
thunderstorms after midnight. Waves 1 foot or less.
.THURSDAY...South winds 10 knots or less becoming west. A chance
of showers and thunderstorms. Waves 1 foot or less.
.THURSDAY NIGHT...Southwest winds less than 10 knots. Waves
1 foot or less.
.FRIDAY...West winds 10 knots or less becoming south. Waves
1 foot or less.
.SATURDAY...Southeast winds 10 knots or less becoming south 10 to
15 knots. A chance of showers Saturday night. Waves 2 feet or
less.
.SUNDAY...Southwest winds 5 to 15 knots becoming west. Showers
likely with a chance of thunderstorms. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-092100-
MAFOR 0915/
ONTARIO WEST 1/2 11600 11500 11300 11200 11300 11400 12500. A
chance of showers this evening. Waves 1 foot or less.

ONTARIO EAST 1/2 11500 11700 11100 12300 12400 11500. Waves 1
foot or less.

$$