570
FZUS61 KBUF 140202
GLFLO

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1002 PM EDT Sun Jul 13 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 29.3 inch low near James Bay will lift north into
northern Quebec, while slowly dragging its trailing cold front
across the lake tonight. A 30.1 inch high will slowly drift from the
Upper Midwest to New England Monday through Wednesday. A 29.7 inch
low will track northeastward across the Great Lakes and into Quebec
Wednesday night and Thursday. The trailing cold front will slowly
track across the lake on Friday as another wave tracks across the
region.

LOZ062-140900-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1002 PM EDT Sun Jul 13 2025

.REST OF TONIGHT...West winds 10 knots or less becoming
northwest. Waves 1 foot or less.
.MONDAY...Light and variable winds. Waves 1 foot or less.
.MONDAY NIGHT...South winds 10 knots or less becoming west. Waves
1 foot or less.
.TUESDAY...West winds less than 10 knots becoming east. Waves
1 foot or less.
.TUESDAY NIGHT...Southeast winds 10 knots or less becoming
southwest. Waves 1 foot or less.
.WEDNESDAY...Southwest winds 10 knots or less. A chance of
showers during the day, then a chance of showers and
thunderstorms Wednesday night. Waves 2 feet or less.
.THURSDAY...Southwest winds 10 to 15 knots becoming west. A
chance of showers and thunderstorms. Waves 1 to 2 feet.
.FRIDAY...West winds 5 to 10 knots becoming north. A chance of
showers. Waves 1 to 2 feet.

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-140900-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1002 PM EDT Sun Jul 13 2025

.REST OF TONIGHT...South winds 5 to 10 knots becoming southwest.
A chance of showers and thunderstorms. Some thunderstorms may
produce gusty winds late this evening. Waves 1 foot or less.
.MONDAY...Southwest winds 10 knots or less. Waves 1 foot or less.
.MONDAY NIGHT...South winds 10 knots or less becoming southwest.
Waves 1 foot or less.
.TUESDAY...Southwest winds less than 10 knots becoming west.
Waves 1 foot or less.
.TUESDAY NIGHT...South winds 10 knots or less. Waves 1 foot or
less.
.WEDNESDAY...South winds 5 to 10 knots. A chance of showers and
thunderstorms. Waves 2 feet or less.
.THURSDAY...Southwest winds 5 to 15 knots becoming west. Showers
likely with a chance of thunderstorms. Waves 1 to 2 feet.
.FRIDAY...West winds 5 to 15 knots becoming north. A chance of
showers. Waves 2 feet or less.

Winds and waves higher in and near thunderstorms.

$$

LOZ061-140900-
MAFOR 1403/
ONTARIO WEST 1/2 11600 11700 12600 12300 11400 11500. Waves 1
foot or less.

ONTARIO EAST 1/2 14500 12600 12400. A chance of showers late this
evening. Waves 1 foot or less.

$$