416
FZUS61 KBUF 031402
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 AM EDT Thu Jul 3 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 weak cold front will slowly cross the Lower Great
Lakes today. An expansive 30.1 inch area of high pressure will then
build eastward across the Great Lakes tonight and Friday...before
drifting to the eastern seaboard Saturday. A wavy cold frontal
boundary is then forecast to slowly push southeastward across the
Upper Great Lakes and southern Ontario during Sunday, then across
the Lower Great Lakes on Monday. A 30.1 inch surface high will build
across the lower Great Lakes on Tuesday.

LOZ062-032100-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 AM EDT Thu Jul 3 2025

.REST OF TODAY...West winds around 10 knots. Waves 1 to 2 feet.
.TONIGHT...Northwest winds 5 to 15 knots becoming north. Waves
1 to 2 feet.
.FRIDAY...North winds 10 knots or less becoming southwest. Waves
1 foot or less.
.FRIDAY NIGHT...South winds 5 to 10 knots. Waves 1 foot or less.
.SATURDAY...South winds 5 to 15 knots becoming southwest. Waves
2 feet or less.
.SUNDAY...Southwest winds 10 to 15 knots becoming west. A chance
of showers and thunderstorms Sunday night. Waves 1 to 3 feet.
.MONDAY...Northwest winds around 10 knots becoming north. A
chance of showers and thunderstorms during the day. Waves 1 to
2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-032100-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 AM EDT Thu Jul 3 2025

.REST OF TODAY...Northwest winds around 10 knots becoming west. A
chance of showers late this morning. Waves 1 to 2 feet.
.TONIGHT...West winds 5 to 10 knots becoming north. Waves 2 feet
or less.
.FRIDAY...North winds 5 to 10 knots becoming west. Waves 1 foot
or less.
.FRIDAY NIGHT...Southwest winds 5 to 10 knots becoming south.
Waves 1 foot or less.
.SATURDAY...South winds 5 to 15 knots. Waves 2 feet or less.
.SUNDAY...Southwest winds 10 to 15 knots. A chance of showers and
thunderstorms Sunday night. Waves 1 to 3 feet.
.MONDAY...West winds 5 to 10 knots becoming north. A chance of
showers and thunderstorms. Waves 1 to 3 feet subsiding to 1 foot
or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-032100-
MAFOR 0315/
ONTARIO WEST 1/2 13600 11710 11700 12800 11100. Waves 2 feet or
less.

ONTARIO EAST 1/2 13600 12700 13800. Waves 2 feet or less.

$$