FZUS61 KBUF 042011 GLFSL Forecast for the Saint Lawrence River including the Thousand Islands Region National Weather Service Buffalo NY 410 PM EDT Sat Apr 4 2026 SLZ022-024-050300- Saint Lawrence River from Cape Vincent to Saint Regis 410 PM EDT Sat Apr 4 2026 ...SMALL CRAFT ADVISORY IN EFFECT FROM SUNDAY MORNING THROUGH SUNDAY EVENING... .TONIGHT...East winds 10 to 15 knots becoming south 15 to 20 knots. A chance of showers early. Showers after midnight. .SUNDAY...Southwest winds 10 to 15 knots increasing to 15 to 20 knots. Showers early, then a chance of showers from late morning on. .SUNDAY NIGHT...Southwest winds 15 to 20 knots becoming west 5 to 15 knots. A chance of rain and snow showers. .MONDAY...West winds 5 to 10 knots. A chance of snow showers. .MONDAY NIGHT...West winds 10 knots or less becoming north. A chance of snow showers in the evening, then snow showers likely overnight. .TUESDAY...Northwest winds 5 to 15 knots becoming southwest less than 10 knots. Snow showers likely during the day. .WEDNESDAY...Southwest winds 10 knots or less becoming south and increasing to 15 to 20 knots. Mainly clear, then becoming partly cloudy. .THURSDAY...South winds 15 to 20 knots becoming southwest 5 to 15 knots. A chance of rain showers. $$