


Great Lakes Forecast
Issued by NWS
Issued by NWS
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. $$