####018004329#### FZUS61 KBUF 092027 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 427 PM EDT Tue Apr 9 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 30.2 inch ridge axis will drift across the lake and to New England through this evening. A weakening 29.8 inch trough will then wash out as it approaches the lower Great Lakes from the west on Wednesday. Another 29.6 inch low over the Deep South will track northeastward to near Lake Erie and deepen to 29.1 inches by later Thursday. This low will begin to fill Thursday night, while pushing a cold front across the Lake. A secondary cold front will pass across the Lake Friday night. A 29.9 inch ridge of high pressure will move across the Lake by Saturday night. A 29.6 inch area of low pressure may move across the Lake Sunday. LOZ062-100315- Lake Ontario open waters from the Niagara River to Hamlin Beach- 427 PM EDT Tue Apr 9 2024 .TONIGHT...Southeast winds around 10 knots becoming southwest. A chance of showers early, then showers likely with a chance of thunderstorms late this evening. A chance of showers after midnight. Waves 1 to 2 feet. .WEDNESDAY...West winds 5 to 10 knots becoming southwest. Waves 2 feet or less. .WEDNESDAY NIGHT...South winds 5 to 15 knots becoming east. Showers overnight. Waves 1 foot or less building to 1 to 3 feet. .THURSDAY...East winds 15 to 20 knots becoming southeast. Showers in the morning, then showers with a chance of thunderstorms in the afternoon. Waves 2 to 4 feet building to 3 to 5 feet, then subsiding to 2 to 4 feet. .THURSDAY NIGHT...Southeast winds 15 to 20 knots becoming south 10 to 15 knots. Showers with a chance of thunderstorms. Waves 2 to 4 feet. .FRIDAY...Southwest winds 15 to 25 knots becoming west. Showers with a chance of thunderstorms during the day, then showers likely Friday night. Waves 3 to 5 feet building to 6 to 9 feet. Waves occasionally around 11 feet. .SATURDAY...West winds to 30 knots diminishing to 10 to 15 knots. Showers likely during the day. Waves 5 to 9 feet subsiding to 2 to 4 feet. Waves occasionally around 11 feet. .SUNDAY...Southwest winds 5 to 15 knots becoming west. A chance of showers. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-100315- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 427 PM EDT Tue Apr 9 2024 .TONIGHT...East winds 10 to 15 knots becoming south. Showers with a chance of thunderstorms. Showers likely late. Waves 2 feet or less. .WEDNESDAY...Southwest winds 5 to 15 knots becoming west. A chance of showers through early afternoon. Waves 1 to 2 feet. .WEDNESDAY NIGHT...Southwest winds 5 to 15 knots becoming east. Showers likely overnight. Waves 2 feet or less. .THURSDAY...East winds 15 to 20 knots becoming southeast. Showers in the morning, then showers with a chance of thunderstorms in the afternoon. Waves 1 to 3 feet building to 2 to 4 feet. .THURSDAY NIGHT...Southeast winds 15 to 25 knots becoming south. Showers with a chance of thunderstorms. Waves 3 to 6 feet. .FRIDAY...South winds 15 to 20 knots becoming west and increasing to 30 knots. Showers with a chance of thunderstorms during the day, then showers Friday night. Waves 2 to 4 feet building to 8 to 11 feet. Waves occasionally around 14 feet. .SATURDAY...West winds to 30 knots diminishing to 15 to 25 knots. Showers during the day, then a chance of showers Saturday night. Waves 8 to 12 feet subsiding to 3 to 6 feet. Waves occasionally around 15 feet. .SUNDAY...Southwest winds 5 to 15 knots. A chance of showers. Waves 2 to 4 feet subsiding to 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LOZ061-100315- MAFOR 0921/ ONTARIO WEST 1/2 11210 11306 12500 14600. A chance of thunderstorms this evening. Waves 1 to 2 feet. ONTARIO EAST 1/2 11210 11310 11416 11400 12500 12610. A chance of thunderstorms overnight. Waves 2 feet or less. $$ ####018001334#### FZUS61 KBUF 092028 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 428 PM EDT Tue Apr 9 2024 SLZ022-024-100315- Saint Lawrence River from Cape Vincent to Saint Regis 428 PM EDT Tue Apr 9 2024 .TONIGHT...East winds 5 to 10 knots becoming southeast. A chance of showers late this evening. Showers with a chance of thunderstorms after midnight, then showers late. .WEDNESDAY...South winds 5 to 15 knots becoming southwest. Showers likely early, then a chance of showers late in the morning. .WEDNESDAY NIGHT...Southwest winds 10 knots or less becoming southeast. Partly cloudy in the evening, then becoming mostly cloudy. .THURSDAY...East winds 10 knots or less becoming southeast 10 to 15 knots. Showers. .THURSDAY NIGHT...Southeast winds 10 to 15 knots. Showers with a chance of thunderstorms. .FRIDAY...South winds 10 to 15 knots becoming southwest. Showers with a chance of thunderstorms during the day, then showers Friday night. .SATURDAY...Southwest winds 5 to 15 knots becoming west. Rain showers during the day, then a chance of rain showers Saturday night. .SUNDAY...Southwest winds 5 to 10 knots. A chance of showers. Winds and waves higher in and near thunderstorms. $$