511
FZUS61 KBUF 222001
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
401 PM EDT Thu May 22 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 weakening 29.6 inch low will remain over the lower
Great Lakes tonight. Meanwhile, a secondary 29.7 inch low along the
Mid Atlantic coast starts to move to the northeast. The coastal low
will slide northeast to off the New England coast by Friday morning,
while deepening to 29.4 inches. The two areas of low pressure will
then consolidate into one primary 29.5 inch low located near the Bay
of Fundy by Friday evening. This low will slowly weaken as it moves
into the Canadian Maritimes by Monday, however a trough will extend
back west across the lake through the start of next week. A 30.3
inch high will build across the lake by Tuesday.

LOZ062-230300-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
401 PM EDT Thu May 22 2025

.TONIGHT...Southeast winds 5 to 15 knots becoming east. Rain.
Waves 2 to 4 feet subsiding to 1 to 3 feet.
.FRIDAY...Northeast winds 10 to 15 knots becoming west. Rain.
Waves 1 to 3 feet.
.FRIDAY NIGHT...West winds 10 to 15 knots. Periods of rain. Waves
1 to 3 feet.
.SATURDAY...West winds 10 to 15 knots. Showers likely in the
afternoon. Waves 1 to 3 feet.
.SATURDAY NIGHT...West winds 10 to 15 knots. Showers likely in
the evening. Waves 1 to 2 feet.
.SUNDAY...West winds 5 to 10 knots. Waves 1 to 2 feet.
.MONDAY...West winds 5 to 10 knots becoming east. Waves 1 foot or
less.
.TUESDAY...East winds 5 to 10 knots. A chance of showers Tuesday
night. Waves 2 feet or less.

$$

LOZ063>065-230300-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
401 PM EDT Thu May 22 2025

.TONIGHT...Southeast winds 15 to 20 knots becoming east 10 to
15 knots. Rain. Waves 2 to 4 feet subsiding to 1 to 3 feet.
.FRIDAY...East winds 5 to 15 knots becoming northwest. Rain.
Waves 1 to 3 feet.
.FRIDAY NIGHT...West winds 10 to 15 knots. Periods of rain. Waves
1 to 3 feet.
.SATURDAY...Northwest winds 10 to 15 knots becoming west. Showers
likely. Waves 1 to 3 feet.
.SATURDAY NIGHT...West winds 10 to 15 knots. Showers likely in
the evening, then a chance of showers overnight. Waves 1 to
3 feet.
.SUNDAY...West winds 5 to 15 knots. Waves 2 feet or less.
.MONDAY...West winds 10 knots or less becoming south. Waves
1 foot or less.
.TUESDAY...Southeast winds 5 to 10 knots becoming east. A chance
of showers Tuesday night. Waves 1 foot or less.

$$

LOZ061-230300-
MAFOR 2221/
ONTARIO WEST 1/2 12316 13216 11116 11816 11716. Waves 3 to 5 feet
subsiding to 1 to 3 feet tonight. Waves 1 to 3 feet Friday.

ONTARIO EAST 1/2 13326 13216 11106 11706. Waves 2 to 4 feet
subsiding to 1 to 3 feet tonight. Waves 1 to 3 feet Friday.

$$