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open lake forecast for lake ontario
national weather service buffalo ny
1029 pm edt fri oct 30 2026

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 30.4 inch high will settle over the lower great 
lakes tonight through saturday. this high will drift into the mid 
atlantic states sunday through monday, then drift off the east coast 
by tuesday. a 29.6 inch low is then forecast to move from the upper 
mississippi valley wednesday to the upper great lakes thursday.


loz062-310915-
lake ontario open waters from the niagara river to hamlin beach-
1029 pm edt fri oct 30 2026

.overnight...northwest winds 15 to 20 knots diminishing to
10 to 15 knots. waves 2 to 4 feet subsiding to 1 to 2 feet. 
.saturday...north winds 10 knots or less becoming west. waves
1 foot or less. 
.saturday night...west winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.sunday...southwest winds less than 10 knots. waves 1 foot or
less. 
.sunday night...light and variable winds becoming southwest 5 to
10 knots. waves 1 foot or less. 
.monday...southwest winds 10 knots or less becoming south. waves
1 foot or less. 
.tuesday...south winds 5 to 10 knots. waves 1 foot or less. 
.wednesday...south winds 5 to 10 knots. a chance of showers.
waves 1 foot or less. 

$$

fzus61 kbuf 310229
glflo 
expires:202610310915;;998756

open lake forecast for lake ontario
national weather service buffalo ny
1029 pm edt fri oct 30 2026

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 30.4 inch high will settle over the lower great 
lakes tonight through saturday. this high will drift into the mid 
atlantic states sunday through monday, then drift off the east coast 
by tuesday. a 29.6 inch low is then forecast to move from the upper 
mississippi valley wednesday to the upper great lakes thursday.


loz063>065-310915-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1029 pm edt fri oct 30 2026

.overnight...northwest winds 15 to 20 knots becoming north
and diminishing to 5 to 10 knots. waves 3 to 6 feet subsiding to
2 to 4 feet. 
.saturday...north winds 10 knots or less becoming west. waves
2 feet or less. 
.saturday night...west winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.sunday...south winds 5 to 10 knots. waves 1 foot or less. 
.sunday night...south winds 5 to 15 knots becoming southwest.
waves 2 feet or less. 
.monday...southwest winds 10 knots or less becoming south. waves
2 feet or less. 
.tuesday...southeast winds 5 to 15 knots becoming south 15 to
20 knots. waves 1 to 3 feet. 
.wednesday...south winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers. waves 1 to 3 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1029 pm edt fri oct 30 2026


slz022-024-310915-
saint lawrence river from cape vincent to saint regis
1029 pm edt fri oct 30 2026

.overnight...northwest winds 10 knots or less. becoming
mainly clear. 
.saturday...northwest winds 10 knots or less becoming southwest.
sunny.
.saturday night...southwest winds 10 knots or less. mainly clear
in the evening, then becoming partly cloudy. 
.sunday...southwest winds 10 knots or less. mostly sunny. 
.sunday night...southwest winds 10 knots or less. partly to
mostly cloudy. 
.monday...southwest winds 5 to 10 knots becoming light and
variable. mostly cloudy. 
.tuesday...south winds 10 knots or less. mostly cloudy. 
.wednesday...south winds 5 to 10 knots. a chance of showers
wednesday night. 

$$