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open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt mon sep 15 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 large 30.3 inch high will slowly shift southeast 
across southern quebec into new england by late tuesday. the high 
will then drift slowly east off the new england coast wednesday into 
wednesday night while remaining ridged west over the lake. a cold 
front will cross the lake thursday night, with another large area of 
high pressure over western ontario building southeast across the 
lower great lakes friday and saturday.


loz062-160300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt mon sep 15 2025

.tonight...east winds 5 to 10 knots. waves 2 feet or less. 
.tuesday...east winds 5 to 10 knots. patchy fog in the morning.
waves 1 to 2 feet. 
.tuesday night...east winds 10 knots or less. waves 1 foot or
less. 
.wednesday...east winds less than 10 knots becoming northeast.
waves 1 foot or less. 
.wednesday night...east winds less than 10 knots becoming west.
waves 1 foot or less. 
.thursday...west winds 5 to 10 knots becoming north. waves 2 feet
or less. 
.friday...northeast winds 15 to 20 knots becoming east. waves
1 to 3 feet building to 3 to 5 feet. 
.saturday...east winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 

$$

fzus61 kbuf 152002
glflo 
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open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt mon sep 15 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 large 30.3 inch high will slowly shift southeast 
across southern quebec into new england by late tuesday. the high 
will then drift slowly east off the new england coast wednesday into 
wednesday night while remaining ridged west over the lake. a cold 
front will cross the lake thursday night, with another large area of 
high pressure over western ontario building southeast across the 
lower great lakes friday and saturday.


loz063>065-160300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt mon sep 15 2025

.tonight...northeast winds 5 to 10 knots becoming east. waves
1 foot or less. 
.tuesday...east winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.tuesday night...northeast winds less than 10 knots becoming
southeast. waves 1 foot or less. 
.wednesday...south winds 10 knots or less becoming east. waves
1 foot or less. 
.wednesday night...east winds less than 10 knots becoming
southwest. waves 1 foot or less. 
.thursday...southwest winds 5 to 15 knots becoming north. waves
1 foot or less building to 1 to 3 feet. 
.friday...north winds 15 to 20 knots becoming northeast. waves
2 to 4 feet. 
.saturday...east winds 15 to 20 knots becoming southeast 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
402 pm edt mon sep 15 2025


slz022-024-160300-
saint lawrence river from cape vincent to saint regis
402 pm edt mon sep 15 2025

.tonight...northeast winds less than 10 knots. mainly clear. 
.tuesday...northeast winds less than 10 knots. patchy fog early. 
.tuesday night...light and variable winds. patchy fog overnight. 
.wednesday...light and variable winds. patchy fog in the morning.
.wednesday night...light and variable winds. partly to mostly
cloudy. 
.thursday...southwest winds 10 knots or less becoming north. a
chance of showers thursday night. 
.friday...north winds 5 to 10 knots. mainly clear. 
.saturday...northeast winds less than 10 knots becoming
southeast. mainly clear, then becoming partly cloudy. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
345 pm edt mon sep 15 2025

for waters beyond five nautical miles of shore on lake erie

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...
high pressure 30.20 inches over quebec will continue to influence
the region through the middle of the week. a weak cold front will
move south across lake erie thursday night into friday. another
area of high pressure 30.20 inches will build across the eastern
great lakes region behind the cold front on saturday. 


lez061-167>169-160215-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-willowick to geneva-on-the-
lake oh beyond 5nm off shoreline to us-canadian border-geneva-on-
the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
345 pm edt mon sep 15 2025

.tonight...northeast winds 10 to 15 knots becoming east. waves
1 to 3 feet building to 2 to 4 feet. 
.tuesday...southeast winds 10 knots or less becoming northeast.
waves 1 to 3 feet subsiding to 1 foot or less. 
.tuesday night...east winds 5 to 10 knots becoming southeast.
waves 1 foot or less. 
.wednesday...southeast winds less than 10 knots becoming
northeast. waves 1 foot or less. 
.wednesday night...east winds less than 10 knots becoming south.
waves 1 foot or less. 
.thursday...west winds 10 knots or less becoming northwest. waves
1 foot or less. 
.friday...northeast winds 10 to 15 knots becoming east 15 to
20 knots. waves 1 to 2 feet building to 3 to 5 feet. 
.saturday...east winds 15 to 20 knots becoming southeast. waves
3 to 5 feet subsiding to 2 to 4 feet. 

$$