Great Lakes Forecast
Issued by NWS

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158
FZUS61 KBUF 160802
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 AM EDT Tue Sep 16 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 30.3 inch high across Ontario and Quebec will drift
east off the New England coast Wednesday into Wednesday night, while
remaining ridged over the lake. A cold front will cross the lake
Thursday night, with another area of high pressure over western
Ontario builds southeast across the lower Great Lakes Friday and
Saturday.

LOZ062-161500-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
402 AM EDT Tue Sep 16 2025

.TODAY...Northeast winds 5 to 15 knots becoming east. Patchy fog
early. Waves 1 to 2 feet.
.TONIGHT...East winds 10 knots or less. Waves 2 feet or less.
.WEDNESDAY...East winds 10 knots or less. Waves 1 foot or less.
.WEDNESDAY NIGHT...East winds 10 knots or less becoming west.
Waves 1 foot or less.
.THURSDAY...West winds 10 knots or less becoming north. Waves
2 feet or less.
.FRIDAY...Northeast winds 5 to 15 knots becoming east 15 to
20 knots. Waves 1 to 2 feet building to 2 to 4 feet.
.SATURDAY...East winds 15 to 20 knots becoming southeast 10 to
15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet.

$$

LOZ063>065-161500-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
402 AM EDT Tue Sep 16 2025

.TODAY...Northeast winds 5 to 15 knots. Waves 2 feet or less.
.TONIGHT...Northeast winds 10 knots or less becoming southeast.
Waves 1 foot or less.
.WEDNESDAY...South winds 10 knots or less becoming east. Waves
1 foot or less.
.WEDNESDAY NIGHT...East winds less than 10 knots becoming
southwest. Waves 1 foot or less.
.THURSDAY...Southwest winds 5 to 15 knots becoming north. Waves
2 feet or less.
.FRIDAY...North winds 15 to 20 knots becoming northeast. Waves
1 to 3 feet building to 2 to 4 feet.
.SATURDAY...East winds 15 to 20 knots becoming southeast 10 to
15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet.

$$

LOZ061-161500-
MAFOR 1609/
ONTARIO WEST 1/2 11110 11210 15200. Waves 2 feet or less.

ONTARIO EAST 1/2 11110 11200 13100 12200 11300. Waves 2 feet or
less.

$$