898
FZUS61 KBUF 170802
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 AM EDT Thu Sep 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 weak front stalled just south of the lake
this morning will lift slightly back northward as a 30.2 inch
surface low advances eastward along the front. This low, traveling
south of the Lake, will then carry the front southeast of the lake
this evening. A 30.4 inch high will then build from northwest
Ontario province Thursday night to southern Quebec by Saturday
morning before moving off the New England coast by Sunday while
weakening to 30.2 inches. Another 30.4 inch high will then build
from northwest Ontario province Sunday to western Quebec Monday.
Meanwhile, a 29.8 inch low will move into the lower Ohio Valley by
Monday.

LOZ062-171500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 AM EDT Thu Sep 17 2026

.TODAY...Northeast winds 10 knots or less becoming northwest.
Waves 1 foot or less.
.TONIGHT...West winds 10 knots or less becoming north. Waves
2 feet or less.
.FRIDAY...North winds 10 knots or less. Waves 2 feet or less.
.FRIDAY NIGHT...North winds 10 to 15 knots becoming east. Waves
2 feet or less building to 2 to 3 feet.
.SATURDAY...East winds 10 to 15 knots. Showers likely Saturday
night. Waves 1 to 3 feet.
.SUNDAY...Northeast winds 15 to 25 knots. Showers likely during
the day. Waves 2 to 3 feet building to 3 to 6 feet.
.MONDAY...Northeast winds 15 to 25 knots becoming east to
30 knots. Waves 3 to 6 feet building to 5 to 8 feet. Waves
occasionally around 10 feet.

$$

LOZ063>065-171500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 AM EDT Thu Sep 17 2026

.TODAY...Southeast winds 10 knots or less becoming north. A
chance of showers early. Waves 1 foot or less.
.TONIGHT...Northwest winds 5 to 10 knots becoming north. Waves
2 feet or less.
.FRIDAY...North winds 10 to 15 knots. Waves 1 to 3 feet.
.FRIDAY NIGHT...North winds 10 to 15 knots becoming northeast.
Waves 1 to 3 feet.
.SATURDAY...East winds 5 to 15 knots becoming southeast. Showers
likely Saturday night. Waves 1 to 3 feet.
.SUNDAY...East winds 15 to 25 knots becoming northeast. Showers
likely during the day. Waves 1 to 3 feet building to 3 to 5 feet.
.MONDAY...Northeast winds 15 to 25 knots. Waves 3 to 6 feet.

$$

LOZ061-171500-
MAFOR 1709/
ONTARIO WEST 1/2 13100 11800 11600 12700 11800. Waves 2 feet or
less.

ONTARIO EAST 1/2 11400 12100 11800 13700 11800. Waves 2 feet or
less.

$$