834
FZUS61 KBUF 171402
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM EDT Mon Aug 17 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 trough averaging 29.8 inches will linger over Lake Ontario today.
A high pressure ridge averaging 30.0 inches builds from the Upper
Midwest tonight and traverses Lake Ontario on Tuesday. The ridge
will begin to exit eastward Tuesday night before a cold front sweeps
southeastward across the lake Wednesday. Behind the cold front, a
30.1 inch high will build from the Upper Midwest through this Friday.

LOZ062-172100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 AM EDT Mon Aug 17 2026

.THIS AFTERNOON...West winds 5 to 10 knots. Waves 2 feet or less.
.TONIGHT...West winds 5 to 10 knots becoming north. Waves 2 feet
or less.
.TUESDAY...Northwest winds 10 knots or less becoming southwest.
Waves 1 foot or less.
.TUESDAY NIGHT...Southwest winds 10 to 15 knots. Showers likely
overnight. Waves 1 to 3 feet.
.WEDNESDAY...West winds 5 to 15 knots becoming northwest. Showers
likely during the day, then a chance of showers Wednesday night.
Waves 1 to 2 feet.
.THURSDAY...Northwest winds 10 knots or less becoming north.
Waves 1 foot or less.
.FRIDAY...Northeast winds 10 knots or less becoming south. Waves
1 foot or less.

$$

LOZ063>065-172100-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 AM EDT Mon Aug 17 2026

.THIS AFTERNOON...West winds 5 to 15 knots. A chance of showers.
Waves 2 feet or less.
.TONIGHT...Northwest winds 5 to 15 knots becoming north less than
10 knots. Waves 2 feet or less.
.TUESDAY...North winds 10 knots or less becoming west. Waves
1 foot or less.
.TUESDAY NIGHT...West winds 5 to 15 knots becoming southwest. A
chance of showers overnight. Waves 2 feet or less.
.WEDNESDAY...Southwest winds 5 to 15 knots becoming northwest.
Showers likely during the day, then a chance of showers Wednesday
night. Waves 1 to 3 feet.
.THURSDAY...Northwest winds 10 knots or less. Waves 1 foot or
less.
.FRIDAY...Southwest winds 10 knots or less becoming southeast.
Waves 1 foot or less.

$$

LOZ061-172100-
MAFOR 1715/
ONTARIO WEST 1/2 13610 11710 13800 11700. Waves 2 feet or less.

ONTARIO EAST 1/2 13610 11810 12100 11800 11700. Waves 2 feet or
less.

$$