FZUS61 KBUF 090202 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1002 PM EDT Wed Jul 8 2026 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 broad 30.1 inch high will linger across the mid- Atlantic states overnight, before giving way to a weak cold front that will cross the lake Thursday night through early Friday. Another 30.1 inch high will then build across the upper Great Lakes Friday and the lower Great Lakes over the weekend, before drifting off the New England coast Monday. LOZ062-090900- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1002 PM EDT Wed Jul 8 2026 .OVERNIGHT...Southwest winds 5 to 10 knots. Waves 1 foot or less. .THURSDAY...Southwest winds 5 to 10 knots becoming west. A chance of showers and thunderstorms early in the afternoon. Showers likely with a chance of thunderstorms late. Waves 1 foot or less. .THURSDAY NIGHT...West winds 5 to 10 knots. Showers with a chance of thunderstorms in the evening, then showers likely overnight. Waves 1 foot or less. .FRIDAY...Northwest winds less than 10 knots becoming west. Showers likely in the morning. Waves 1 foot or less. .FRIDAY NIGHT...West winds 10 knots or less becoming northeast. Waves 2 feet or less. .SATURDAY...Northeast winds 10 knots or less. Waves 2 feet or less. .SUNDAY...East winds 10 knots or less becoming southwest. Waves 1 foot or less. .MONDAY...Southwest winds 5 to 10 knots. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LOZ063>065-090900- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1002 PM EDT Wed Jul 8 2026 .OVERNIGHT...Southwest winds 10 knots or less. Waves 1 foot or less. .THURSDAY...Southwest winds 5 to 10 knots becoming west. A chance of showers and thunderstorms late. Waves 1 foot or less. .THURSDAY NIGHT...West winds 5 to 10 knots. Showers with a chance of thunderstorms in the evening, then showers overnight. Waves 1 foot or less. .FRIDAY...Northwest winds 5 to 10 knots becoming west. Showers likely in the morning. Waves 1 foot or less. .FRIDAY NIGHT...Northwest winds 5 to 10 knots becoming north. Waves 1 foot or less. .SATURDAY...Northeast winds 10 knots or less. Waves 2 feet or less. .SUNDAY...East winds 10 knots or less becoming south. Waves 1 foot or less. .MONDAY...Southwest winds 5 to 10 knots. Waves 2 feet or less. Winds and waves higher in and near thunderstorms. $$ LOZ061-090900- MAFOR 0903/ ONTARIO WEST 1/2 14500 11500 12600 11506. A chance of thunderstorms Thursday afternoon and Thursday evening. Waves 1 foot or less. ONTARIO EAST 1/2 15500 11600 11606. Waves 1 foot or less. $$