####018004102#### FZUS61 KBUF 170238 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1038 PM EDT Tue Apr 16 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 large storm system will move from the northern Plains to the upper Mississippi Valley tonight, before shifting east into the Great Lakes Wednesday. The weakening storm system will pass to the northwest of the lake Wednesday night and Thursday sending a cold front across the lake Wednesday night. The next storm system will then slowly cross 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. LOZ062-170900- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1038 PM EDT Tue Apr 16 2024 .OVERNIGHT...East winds less than 10 knots increasing to 15 to 25 knots. Waves 2 feet or less building to 3 to 6 feet. .WEDNESDAY...East winds to 30 knots. A chance of showers early, then showers. Showers with a chance of thunderstorms late. Waves 6 to 9 feet. Waves occasionally around 11 feet. .WEDNESDAY NIGHT...East winds to 30 knots becoming southeast 15 to 25 knots. Showers. Waves 5 to 9 feet subsiding to 3 to 6 feet. Waves occasionally around 11 feet. .THURSDAY...South winds 10 to 15 knots becoming southwest. Showers in the morning, then showers likely in the afternoon. Waves 2 to 4 feet subsiding to 1 to 2 feet. .THURSDAY NIGHT...Southwest winds 5 to 15 knots becoming southeast. A chance of showers in the evening. Waves 2 feet or less. .FRIDAY...Southeast winds 10 to 15 knots becoming west. Showers likely. Waves 1 to 3 feet. .SATURDAY...West winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of rain showers during the day. Waves 2 to 4 feet. .SUNDAY...West winds 10 to 15 knots. Waves 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-170900- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1038 PM EDT Tue Apr 16 2024 .OVERNIGHT...East winds less than 10 knots becoming northeast and increasing to 15 to 25 knots. Waves 1 foot or less building to 3 to 5 feet. .WEDNESDAY...Northeast winds 15 to 25 knots becoming east. A chance of showers. Showers likely late. Waves 3 to 6 feet building to 4 to 7 feet, then subsiding to 3 to 6 feet. Waves occasionally around 9 feet. .WEDNESDAY NIGHT...East winds 15 to 25 knots becoming southeast. Showers likely in the evening, then showers overnight. Waves 3 to 6 feet. .THURSDAY...Southeast winds to 30 knots becoming south 15 to 25 knots. Showers. Waves 3 to 5 feet subsiding to 2 to 4 feet. .THURSDAY NIGHT...South winds 15 to 25 knots becoming southeast. Showers likely in the evening, then a chance of showers overnight. Waves 1 to 3 feet building to 2 to 4 feet. .FRIDAY...South winds to 30 knots becoming west 15 to 25 knots. Showers likely. Waves 3 to 5 feet subsiding to 1 to 3 feet. .SATURDAY...West winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of rain showers. Waves 2 to 4 feet building to 3 to 5 feet, then subsiding to 2 to 4 feet. .SUNDAY...West winds 10 to 15 knots. Waves 2 to 4 feet subsiding to 1 to 3 feet. Winds and waves higher in and near thunderstorms. $$ LOZ061-170900- MAFOR 1703/ ONTARIO WEST 1/2 11200 11230 12240 12246 11236 11246. Waves 2 feet or less building to 3 to 6 feet overnight. Waves 5 to 9 feet, and occasionally around 11 feet Wednesday and Wednesday evening. ONTARIO EAST 1/2 11200 11120 11130 11120 13220 11226. Waves 1 foot or less building to 2 to 4 feet overnight. Waves 3 to 6 feet subsiding to 2 to 4 feet Wednesday. Waves 2 to 4 feet Wednesday evening. $$ ####018001011#### FZUS61 KBUF 170239 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 1038 PM EDT Tue Apr 16 2024 SLZ022-024-170900- Saint Lawrence River from Cape Vincent to Saint Regis 1038 PM EDT Tue Apr 16 2024 .OVERNIGHT...Northeast winds 5 to 10 knots. Mainly clear. .WEDNESDAY...Northeast winds 5 to 15 knots. Mostly sunny in the morning, then becoming partly sunny. .WEDNESDAY NIGHT...Northeast winds 10 to 15 knots becoming east. A chance of showers. .THURSDAY...East winds 10 to 15 knots becoming southeast. Showers likely. .THURSDAY NIGHT...South winds 5 to 10 knots. Showers likely in the evening, then a chance of showers overnight. .FRIDAY...South winds 10 to 15 knots becoming southwest. Showers likely. .SATURDAY...Southwest winds 10 to 15 knots becoming west. Rain showers likely. .SUNDAY...West winds 5 to 15 knots becoming southwest. Mostly cloudy, then clearing. $$