265 
FZUS61 KBUF 080231
GLFLO 

Open Lake Forecast for Lake Ontario
National Weather Service Buffalo NY
1031 PM EDT Sat Aug 7 2021

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 29.9 inch trough will cross the Lower Great 
Lakes tonight followed by a warm front averaging 29.9 inches on 
Sunday night and Monday. A 30.3 inch high will then build along 
the Atlantic seaboard on Tuesday, then a trough averaging 29.8 
inches will move across the lower Great Lakes on Wednesday.

LOZ062-080915-
Lake Ontario open waters from the Niagara River to Hamlin Beach-
1031 PM EDT Sat Aug 7 2021

.OVERNIGHT...Southeast winds less than 10 knots. Waves 1 foot or 
less. 
.SUNDAY...South winds 10 knots or less becoming east. Waves
1 foot or less. 
.SUNDAY NIGHT...East winds 10 knots or less becoming south. Waves
1 foot or less. 
.MONDAY...South winds 10 knots or less. Waves 1 foot or less. 
.MONDAY NIGHT...South winds 10 knots or less. Waves 1 foot or
less. 
.TUESDAY...South winds 10 to 15 knots becoming southwest. Showers
likely with a chance of thunderstorms. Waves 2 feet or less. 
.WEDNESDAY...Southwest winds 10 to 15 knots. A chance of showers
and thunderstorms. Waves 1 to 3 feet. 
.THURSDAY...Southwest winds 5 to 10 knots. A chance of showers
and thunderstorms. Waves 1 to 2 feet. 

Winds and waves higher in and near thunderstorms.

$$

LOZ063>065-080915-
Lake Ontario open waters from Hamlin Beach to the Saint Lawrence
River-
1031 PM EDT Sat Aug 7 2021

.OVERNIGHT...South winds less than 10 knots becoming southeast. 
Waves 1 foot or less. 
.SUNDAY...Southeast winds less than 10 knots becoming northeast.
Waves 1 foot or less. 
.SUNDAY NIGHT...East winds 5 to 10 knots becoming south. Waves
1 foot or less. 
.MONDAY...South winds 5 to 10 knots becoming southeast. Waves
1 foot or less. 
.MONDAY NIGHT...Southeast winds 5 to 10 knots becoming south.
Waves 2 feet or less. 
.TUESDAY...South winds 10 to 15 knots. Showers likely with a
chance of thunderstorms. Waves 2 feet or less. 
.WEDNESDAY...South winds 10 to 15 knots. A chance of showers and 
thunderstorms. Waves 2 feet or less. 
.THURSDAY...Southwest winds 5 to 10 knots. A chance of showers
and thunderstorms. Waves 2 feet or less. 

Winds and waves higher in and near thunderstorms.

$$

LOZ061-080915-
MAFOR 0803/
ONTARIO WEST 1/2 13400 11300 13200 11300. Waves 1 foot or less. 

ONTARIO EAST 1/2 12400 12300 11200 11100 11200 11300. Waves 1
foot or less. 

$$