National Weather Service Marine Forecast FZUS61 KBUF

FZUS61 KBUF 230802
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
402 AM EDT Mon Jun 23 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 30.2 inch area of high pressure over the Ohio Valley this morning will gradually drift towards the southeast states through Wednesday. A weak cold front will then settle south across the eastern Great Lakes region Tuesday night through Wednesday, then stall just south of the lake through the end of the week.

LOZ062-231500
Lake Ontario open waters from the Niagara River to Hamlin Beach
402 AM EDT Mon Jun 23 2025

TODAY
Southwest winds 10 to 15 knots increasing to 15 to 20 knots. Waves 1 to 3 feet.

TONIGHT
Southwest winds 15 to 20 knots diminishing to 10 to 15 knots. Waves 2 to 3 feet.

TUESDAY
Southwest winds 10 to 15 knots becoming west. A chance of showers and thunderstorms in the afternoon. Waves 1 to 2 feet.

TUESDAY NIGHT
West winds 5 to 10 knots becoming northwest. A chance of showers and thunderstorms in the evening. Waves 2 feet or less.

WEDNESDAY
North winds 5 to 10 knots becoming east. A chance of showers. Waves 1 foot or less.

THURSDAY
East winds around 10 knots. A chance of showers and thunderstorms. Waves 1 to 2 feet.

FRIDAY
East winds around 10 knots becoming southwest. Showers likely with a chance of thunderstorms. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

---

LOZ063>065-231500
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence River
402 AM EDT Mon Jun 23 2025

TODAY
Southwest winds 5 to 15 knots. Waves 1 to 2 feet.

TONIGHT
Southwest winds 10 to 15 knots. Waves 1 to 3 feet.

TUESDAY
Southwest winds 5 to 15 knots becoming west. Waves 1 to 3 feet.

TUESDAY NIGHT
West winds 5 to 15 knots becoming northwest. Waves 1 to 3 feet.

WEDNESDAY
North winds 5 to 10 knots becoming northeast. A chance of showers Wednesday night. Waves 2 feet or less.

THURSDAY
Northeast winds 5 to 10 knots becoming east. A chance of showers. Waves 2 feet or less.

FRIDAY
East winds around 10 knots becoming south. Showers likely with a chance of thunderstorms. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

---

LOZ061-231500
MAFOR 2309/ ONTARIO WEST 1/2 13500 14510 11510. Waves 1 to 3 feet.

ONTARIO EAST 1/2 14500 14510. Waves 1 to 3 feet.