


Great Lakes Forecast
Issued by NWS
Issued by NWS
619 FZUS61 KBUF 060201 GLFLO Open Lake Forecast for Lake Ontario National Weather Service Buffalo NY 1001 PM EDT Thu Jun 5 2025 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 cold front will stall out across Ohio and Pennsylvania overnight. Several weak 29.6 inch waves of low pressure will then ripple east along the stalled front Friday through Saturday, with the final wave moving east across New England Saturday night. A weak 29.9 inch surface high will then ridge across the Lower Great Lakes Sunday, before a 29.6 inch low slowly makes its way from the Upper Great Lakes to Hudson Bay Monday and Tuesday. LOZ062-060900- Lake Ontario open waters from the Niagara River to Hamlin Beach- 1001 PM EDT Thu Jun 5 2025 .OVERNIGHT...West winds less than 10 knots. Patchy fog late. Waves 1 foot or less. .FRIDAY...North winds less than 10 knots becoming northeast. Waves 1 foot or less. .FRIDAY NIGHT...Northeast winds 10 knots or less becoming northwest. Waves 1 foot or less. .SATURDAY...Northwest winds 5 to 10 knots becoming west. Waves around 1 foot. .SATURDAY NIGHT...Northwest winds 5 to 10 knots becoming east. Waves around 1 foot. .SUNDAY...East winds 5 to 15 knots becoming south. A chance of showers Sunday night. Waves 1 to 3 feet. .MONDAY...Southwest winds 10 to 15 knots. A chance of showers. Waves 1 to 3 feet. .TUESDAY...Southwest winds 10 to 15 knots becoming west. A chance of showers. Waves 1 to 2 feet. $$ LOZ063>065-060900- Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River- 1001 PM EDT Thu Jun 5 2025 .OVERNIGHT...West winds less than 10 knots. Areas of fog late. A chance of showers late. Waves 1 foot or less. .FRIDAY...North winds less than 10 knots. Areas of fog early. A chance of showers. Waves 1 foot or less. .FRIDAY NIGHT...Northwest winds 10 knots or less becoming west. A chance of showers. Waves 1 foot or less. .SATURDAY...West winds 5 to 10 knots. Waves 2 feet or less. .SATURDAY NIGHT...West winds 5 to 10 knots becoming east. Waves 2 feet or less. .SUNDAY...East winds 5 to 15 knots becoming southeast. A chance of showers Sunday night. Waves 1 to 3 feet. .MONDAY...South winds 15 to 20 knots diminishing to 10 to 15 knots. A chance of showers. Waves 1 to 3 feet. .TUESDAY...South winds 10 to 15 knots becoming west. Showers likely. Waves 1 to 2 feet. $$ LOZ061-060900- MAFOR 0603/ ONTARIO WEST 1/2 11600 11700 11800 14100 11800. Waves 1 foot or less. ONTARIO EAST 1/2 12600 14800 12700. A chance of showers Friday. Waves 1 foot or less. $$