####018004072#### FZUS61 KBUF 171429 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1029 AM EDT Wed Apr 17 2024 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 29.3 inch low will move from the upper Mississippi Valley to the Great Lakes today. The weakening storm system will pass to the northwest of the lake tonight and Thursday sending a cold front across the lake tonight. The next storm system will average 29.8 inches as it slowly crosses northern Ontario and northern Quebec Friday and Saturday sending a secondary cold front across the lake Friday night, while expansive high pressure moves from the Canadian Rockies to the central Plains through Sunday. LOZ062-172130- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1029 AM EDT Wed Apr 17 2024 .REST OF TODAY...East winds to 30 knots. Occasional rain showers, then occasional rain showers with a chance of thunderstorms late. Waves 6 to 9 feet. Waves occasionally around 11 feet. .TONIGHT...East winds to 30 knots becoming south and diminishing to 10 to 15 knots after midnight. Showers with a chance of thunderstorms through the early overnight, then a chance of showers and thunderstorms late. Waves 6 to 9 feet subsiding to 3 to 5 feet. Waves occasionally around 11 feet. .THURSDAY...Southwest winds 5 to 15 knots. A chance of showers in the morning. Waves 2 to 4 feet subsiding to 1 to 3 feet. .THURSDAY NIGHT...Southwest winds 5 to 10 knots becoming southeast. A chance of showers overnight. Waves 1 to 2 feet. .FRIDAY...Southeast winds 10 to 15 knots becoming west 15 to 20 knots. Showers during the day, then a chance of showers Friday night. Waves 1 to 2 feet building to 2 to 4 feet. .SATURDAY...West winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of rain showers. Waves 2 to 4 feet. .SUNDAY...West winds 10 to 15 knots becoming southwest. Waves 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-172130- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1029 AM EDT Wed Apr 17 2024 .REST OF TODAY...Northeast winds 15 to 25 knots becoming east. A chance of rain showers late this morning, then rain showers this afternoon. Waves 4 to 7 feet subsiding to 3 to 6 feet. Waves occasionally around 9 feet. .TONIGHT...East winds 15 to 20 knots becoming southeast. Showers with a chance of thunderstorms. Waves 3 to 6 feet. .THURSDAY...Southeast winds 15 to 25 knots becoming south and diminishing to 10 to 15 knots. Showers likely in the morning, then a chance of showers in the afternoon. Waves 3 to 6 feet. .THURSDAY NIGHT...South winds 10 to 15 knots becoming southeast 15 to 20 knots. A chance of showers in the evening. Waves 2 to 4 feet. .FRIDAY...Southeast winds 15 to 25 knots becoming west. Showers. Waves 3 to 6 feet subsiding to 2 to 3 feet. .SATURDAY...West winds 15 to 20 knots. A chance of rain showers. Waves 2 to 4 feet building to 3 to 5 feet, then subsiding to 2 to 4 feet. .SUNDAY...West winds 10 to 15 knots becoming southwest. Waves 2 to 4 feet subsiding to 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LOZ061-172130- MAFOR 1715/ ONTARIO WEST 1/2 13246 11236 11226 11310 11410 11500. A chance of thunderstorms this evening. Waves 6 to 9 feet, and occasionally around 11 feet this afternoon. Waves 6 to 9 feet subsiding to 3 to 5 feet, and occasionally around 11 feet tonight. Waves 2 to 4 feet Thursday morning. ONTARIO EAST 1/2 11120 11126 13226 11326 11320 11430. A chance of thunderstorms tonight. Waves 3 to 6 feet subsiding to 2 to 4 feet this afternoon. Waves 2 to 4 feet building to 3 to 5 feet tonight. Waves 3 to 6 feet Thursday morning. $$ ####018000964#### FZUS61 KBUF 171430 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1030 AM EDT Wed Apr 17 2024 SLZ022-024-172130- Saint Lawrence River from Cape Vincent to Saint Regis 1030 AM EDT Wed Apr 17 2024 .REST OF TODAY...Northeast winds 5 to 10 knots. Sunny late this morning, then becoming mostly cloudy. .TONIGHT...Northeast winds 10 to 15 knots becoming east. A chance of showers in the evening, then showers likely after midnight. .THURSDAY...East winds 5 to 15 knots becoming southeast. Showers. .THURSDAY NIGHT...South winds 5 to 10 knots. Showers likely in the evening, then a chance of showers overnight. .FRIDAY...South winds 10 to 15 knots becoming southwest. Showers. .SATURDAY...Southwest winds 10 to 15 knots becoming west. Rain showers likely. .SUNDAY...West winds 10 to 15 knots becoming southwest. Becoming mainly clear. $$