206
FZUS61 KBUF 302002
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 PM EDT Mon Jun 30 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 29.6 inch low will move from northwest Ontario
province today 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. The high will then strengthen to 30.1 inches
as it centers over the lake on Friday.

LOZ062-010300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 PM EDT Mon Jun 30 2025

.TONIGHT...Southeast winds 5 to 10 knots becoming southwest.
Showers likely with a chance of thunderstorms through the early
overnight, then a chance of showers late. Waves 2 feet or less.
.TUESDAY...Southwest winds 10 to 15 knots becoming west. Waves
1 to 2 feet.
.TUESDAY NIGHT...West winds around 10 knots. Waves 1 to 2 feet.
.WEDNESDAY...West winds around 10 knots becoming southwest. Waves
1 to 2 feet.
.WEDNESDAY NIGHT...Southwest winds around 10 knots becoming west.
A chance of showers and thunderstorms overnight. Waves 1 to
2 feet.
.THURSDAY...West winds 5 to 10 knots becoming northwest. A chance
of showers and thunderstorms during the day. Waves 1 to 2 feet.
.FRIDAY...North winds 5 to 10 knots becoming southwest. Waves
1 foot or less.
.SATURDAY...Southwest winds 5 to 15 knots. A chance of showers
Saturday night. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-010300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 PM EDT Mon Jun 30 2025

.TONIGHT...South winds 5 to 15 knots. Showers with a chance of
thunderstorms. Waves 2 feet or less.
.TUESDAY...Southwest winds 10 to 15 knots becoming west. A chance
of showers early. Waves 1 to 3 feet.
.TUESDAY NIGHT...West winds 10 to 15 knots. Waves 1 to 3 feet.
.WEDNESDAY...West winds 10 to 15 knots. Waves 1 to 2 feet.
.WEDNESDAY NIGHT...Southwest winds 10 to 15 knots becoming west.
A chance of showers and thunderstorms overnight. Waves 1 to
2 feet.
.THURSDAY...West winds 5 to 15 knots becoming northwest. A chance
of showers and thunderstorms during the day. Waves 1 to 2 feet.
.FRIDAY...Northwest winds 5 to 10 knots becoming south. Waves
1 foot or less.
.SATURDAY...South winds 5 to 15 knots. A chance of showers
Saturday night. Waves 1 foot or less building to 1 to 3 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-010300-
MAFOR 3021/
ONTARIO WEST 1/2 11300 11306 11400 13500 12610. A chance of
thunderstorms tonight. Waves 2 feet or less.

ONTARIO EAST 1/2 11200 11406 11400 11410 12510 12610. A chance of
thunderstorms tonight. Waves 2 feet or less tonight. Waves 1 to 3
feet Tuesday.

$$