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open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt wed sep 17 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 30.3 inch high across quebec will drift east off the 
new england coast by tonight, while remaining ridged over the lake. 
a cold front will cross the lake thursday night, with another area 
of high pressure over western ontario builds southeast across the 
lower great lakes friday and saturday.


loz062-180300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt wed sep 17 2025

.tonight...east winds less than 10 knots becoming west. areas of
fog after midnight. waves 1 foot or less. 
.thursday...west winds 5 to 10 knots becoming southwest. areas of
fog in the morning. waves 1 foot or less. 
.thursday night...west winds 5 to 15 knots becoming north 15 to
20 knots. waves 2 feet or less building to 2 to 3 feet. 
.friday...north winds 15 to 20 knots diminishing to less than
10 knots. waves 1 to 3 feet subsiding to 1 foot or less. 
.friday night...north winds 10 knots or less becoming east and
increasing to 15 to 20 knots overnight. waves 2 feet or less
building to 2 to 3 feet. 
.saturday...east winds 10 to 15 knots. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.sunday...southeast winds 5 to 10 knots becoming south. a chance
of showers sunday night. waves 1 to 2 feet. 
.monday...south winds 5 to 10 knots becoming southwest. a chance
of showers. waves 1 to 2 feet. 

$$

fzus61 kbuf 172002
glflo 
expires:202509180300;;151052

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt wed sep 17 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 30.3 inch high across quebec will drift east off the 
new england coast by tonight, while remaining ridged over the lake. 
a cold front will cross the lake thursday night, with another area 
of high pressure over western ontario builds southeast across the 
lower great lakes friday and saturday.


loz063>065-180300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt wed sep 17 2025

.tonight...east winds 10 knots or less becoming southwest. waves
1 foot or less. 
.thursday...southwest winds 5 to 15 knots becoming west. patchy
fog early. waves 2 feet or less. 
.thursday night...west winds 10 to 15 knots becoming north 15 to
20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.friday...north winds 15 to 20 knots becoming northwest 5 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday night...northwest winds 5 to 15 knots becoming northeast.
waves 1 to 3 feet. 
.saturday...northeast winds 5 to 15 knots becoming southeast.
waves 1 to 3 feet. 
.sunday...southeast winds 10 to 15 knots becoming south 15 to
20 knots. a chance of showers sunday night. waves 2 to 4 feet
building to 3 to 5 feet. 
.monday...south winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of showers. waves 3 to 5 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 wed sep 17 2025


slz022-024-180300-
saint lawrence river from cape vincent to saint regis
402 pm edt wed sep 17 2025

.tonight...light and variable winds. partly cloudy. 
.thursday...southwest winds 5 to 10 knots becoming west. mostly
sunny. 
.thursday night...west winds 5 to 10 knots becoming north. partly
to mostly cloudy. 
.friday...north winds 5 to 10 knots. sunny.
.friday night...north winds 10 knots or less. mainly clear. 
.saturday...northeast winds less than 10 knots becoming east.
mainly clear. 
.sunday...southeast winds 5 to 15 knots becoming south. partly
cloudy. 
.monday...south winds 5 to 15 knots. a chance of showers. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
341 pm edt wed sep 17 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 ridging averaging 30.20 inches and extending from
new england lingers over lake erie before a cold front sweeps
generally southward across the lake thursday evening into thursday
night. behind the front, another ridge averaging 30.20 inches 
affects lake erie as the parent high pressure center moves from 
near hudson bay thursday evening to atlantic waters near nova 
scotia by this monday. however, a warm front will sweep northward 
across lake erie on sunday into early monday.


lez061-169-180215-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
341 pm edt wed sep 17 2025

.tonight...east winds less than 10 knots. waves 1 foot or less. 
.thursday...southwest winds 10 knots or less. waves 2 feet or
less. 
.thursday night...southwest winds 5 to 10 knots becoming
northeast. waves 1 to 2 feet. 
.friday...northeast winds around 10 knots. waves 1 to 2 feet. 
.friday night...northeast winds 10 to 15 knots becoming east.
waves 1 to 3 feet. 
.saturday...east winds 10 to 15 knots becoming southeast. waves
1 to 3 feet. 
.sunday...south winds 5 to 15 knots. a chance of showers sunday
night. waves 1 to 3 feet. 
.monday...south winds 5 to 15 knots. a chance of showers monday
night. waves 1 to 3 feet. 

$$