138
FZUS61 KBUF 291402
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM EDT Sun Jun 29 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 30.0 inch high will build over the lower Great Lakes
through tonight. A 29.6 inch low will then move from northwest
Ontario province Monday to east of Hudson Bay Tuesday while
deepening to 29.2 inches. A cold front trailing this low will cross
the lake Tuesday morning. A 29.9 inch high will build into the Upper
Great Lakes Wednesday and Thursday.

LOZ062-292100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 AM EDT Sun Jun 29 2025

.THIS AFTERNOON...West winds less than 10 knots becoming
southwest. Waves 1 foot or less.
.TONIGHT...South winds 10 knots or less becoming southwest. Waves
1 foot or less.
.MONDAY...South winds 10 knots or less becoming east. Waves
1 foot or less.
.MONDAY NIGHT...Southeast winds 5 to 15 knots becoming southwest.
Showers with a chance of thunderstorms. Waves 2 feet or less.
.TUESDAY...West winds 10 to 15 knots. Showers with a chance of
thunderstorms during the day. Waves 1 to 3 feet.
.WEDNESDAY...West winds 10 to 15 knots. Waves 1 to 3 feet.
.THURSDAY...West winds 5 to 15 knots becoming north. Waves 1 to
2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-292100-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 AM EDT Sun Jun 29 2025

.THIS AFTERNOON...West winds 5 to 10 knots. Waves 1 foot or less.
.TONIGHT...South winds 5 to 10 knots. Waves 1 foot or less.
.MONDAY...South winds 10 knots or less becoming east. Waves
1 foot or less.
.MONDAY NIGHT...Southeast winds 5 to 15 knots becoming south. A
chance of showers and thunderstorms in the evening, then showers
with a chance of thunderstorms overnight. Waves 2 feet or less.
.TUESDAY...Southwest winds 10 to 15 knots becoming west. Showers
with a chance of thunderstorms during the day. Waves 1 to 3 feet
building to 2 to 4 feet.
.WEDNESDAY...West winds 5 to 15 knots becoming southwest. Waves
1 to 3 feet.
.THURSDAY...West winds 10 to 15 knots becoming north. Waves 1 to
2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-292100-
MAFOR 2915/
ONTARIO WEST 1/2 11600 11500 11400 11300 14400. Waves 1 foot or
less.

ONTARIO EAST 1/2 12600 11500 14400 11400. Waves 1 foot or less.

$$