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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est tue nov 4 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 stretching from the great lakes to 
the southeast u.s. will push off the coast tonight through 
wednesday. an area of low pressure will pass to the west and north 
of the lake wednesday, deepening from 29.8 inches down to 29.4 
inches through the day. following this low, another 30.3 inch 
surface high will reestablish over the lake for thursday. the 
surface high will then track east off the atlantic coast through 
friday allowing for another cold frontal passage. a 29.4 inch low 
near james bay will drag its cold front across the lake friday night 
into saturday. a 29.7 inch surface low will track from the ohio 
valley to new england sunday into early monday, deepening to 29.5 
inches.


loz062-051000-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm est tue nov 4 2025

...gale warning in effect from wednesday afternoon through late
wednesday night...

.overnight...west winds 5 to 15 knots becoming south. waves
2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday...south winds 15 to 25 knots becoming west and
increasing to 35 knot gales in the afternoon. showers. waves 1 to
3 feet building to 10 to 13 feet. waves occasionally around
16 feet. 
.wednesday night...northwest gales to 35 knots diminishing to
30 knots. showers. waves 11 to 16 feet subsiding to 6 to 9 feet.
waves occasionally around 20 feet. 
.thursday...northwest winds 15 to 20 knots becoming west 10 to
15 knots. a chance of showers in the morning. waves 4 to 7 feet
subsiding to 1 to 3 feet. waves occasionally around 9 feet. 
.thursday night...west winds 5 to 15 knots becoming south. waves
1 to 2 feet. 
.friday...south winds 15 to 25 knots becoming west. showers.
waves 3 to 5 feet building to 4 to 7 feet, then subsiding to 3 to
6 feet. waves occasionally around 9 feet. 
.saturday...northwest winds 15 to 20 knots becoming east 10 to
15 knots. a chance of showers. waves 3 to 5 feet subsiding to
1 to 2 feet. 
.sunday...northeast winds 15 to 25 knots becoming northwest. rain
showers likely during the day, then rain and snow showers likely
sunday night. waves 3 to 6 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm est tue nov 4 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 stretching from the great lakes to 
the southeast u.s. will push off the coast tonight through 
wednesday. an area of low pressure will pass to the west and north 
of the lake wednesday, deepening from 29.8 inches down to 29.4 
inches through the day. following this low, another 30.3 inch 
surface high will reestablish over the lake for thursday. the 
surface high will then track east off the atlantic coast through 
friday allowing for another cold frontal passage. a 29.4 inch low 
near james bay will drag its cold front across the lake friday night 
into saturday. a 29.7 inch surface low will track from the ohio 
valley to new england sunday into early monday, deepening to 29.5 
inches.


loz063>065-051000-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm est tue nov 4 2025

...gale warning in effect from wednesday afternoon through late
wednesday night...

.overnight...northwest winds 15 to 20 knots becoming
southwest 10 to 15 knots. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.wednesday...south winds 10 to 15 knots becoming southwest and
increasing to 35 knot gales in the afternoon. a chance of showers
in the morning, then showers in the afternoon. waves 1 to 3 feet
building to 10 to 13 feet. waves occasionally around 16 feet. 
.wednesday night...west gales to 40 knots becoming northwest and
diminishing to 30 knots overnight. showers. waves 14 to 18 feet
subsiding to 8 to 11 feet. waves occasionally around 23 feet. 
.thursday...northwest winds 15 to 25 knots becoming west. a
chance of rain showers in the morning. waves 6 to 9 feet
subsiding to 3 to 6 feet. waves occasionally around 11 feet. 
.thursday night...west winds 5 to 15 knots becoming south 15 to
20 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.friday...south winds to 30 knots becoming west and diminishing
to 15 to 20 knots. showers. waves 3 to 6 feet building to 5 to
8 feet. waves occasionally around 10 feet. 
.saturday...northwest winds 15 to 20 knots becoming northeast
10 to 15 knots. rain showers during the day, then a chance of
rain showers saturday night. waves 3 to 6 feet subsiding to 1 to
3 feet. 
.sunday...south winds 15 to 25 knots becoming northwest. rain
showers during the day, then rain showers with snow showers
likely sunday night. waves 2 to 4 feet building to 4 to 7 feet.
waves occasionally around 9 feet. 

$$

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forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
1002 pm est tue nov 4 2025


slz022-024-051000-
saint lawrence river from cape vincent to saint regis
1002 pm est tue nov 4 2025

.rest of tonight...west winds 10 knots or less becoming
southwest. mainly clear late this evening, then becoming mostly
cloudy. 
.wednesday...south winds 10 knots or less becoming southeast and
increasing to 15 to 20 knots in the afternoon. rain showers. 
.wednesday night...northwest winds 15 to 25 knots. rain showers
in the evening, then rain showers with a chance of snow showers
overnight. 
.thursday...northwest winds 5 to 15 knots becoming west. a chance
of snow and rain showers in the morning. 
.thursday night...west winds 10 knots or less becoming south.
partly cloudy in the evening, then becoming mostly cloudy. 
.friday...south winds 10 to 15 knots becoming southwest 15 to
20 knots. rain showers. 
.saturday...northwest winds 5 to 15 knots becoming northeast less
than 10 knots. rain showers during the day, then a chance of rain
showers and freezing rain saturday night. 
.sunday...northeast winds 5 to 10 knots becoming northwest. rain
showers, snow showers likely with a chance of freezing rain
during the day, then snow and rain showers likely sunday night. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
928 pm est tue nov 4 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...
a warm front lifts northeast across lake erie tonight. low 
pressure 29.70 inches will move east across the great lakes 
region tonight into wednesday, quickly bringing a cold front
southeastward across the region. high pressure 30.30 inches will 
briefly return for thursday before departing to the east thursday
night. low pressure 29.50 inches will enter the northern great 
lakes on friday bringing a warm front across the area friday 
morning, followed by a cold front friday night. low pressure 29.60
inches will move through the area on saturday night into sunday.


lez061-168-169-050930-
ripley to buffalo ny extending from 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-
928 pm est tue nov 4 2025

...gale warning in effect from wednesday morning through
wednesday evening...

.overnight...southwest winds 10 to 15 knots becoming south
15 to 20 knots. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.wednesday...south winds to 30 knots becoming west and increasing
to 40 knot gales in the afternoon. a slight chance of rain late
in the morning. a chance of rain early in the afternoon, then
rain late. waves 4 to 7 feet building to 10 to 15 feet. waves
occasionally around 19 feet. 
.wednesday night...northwest gales to 40 knots diminishing to
30 knots. rain likely in the evening, then a chance of rain
overnight. waves 11 to 15 feet subsiding to 5 to 8 feet. waves
occasionally around 19 feet. 
.thursday...northwest winds 15 to 20 knots becoming west 5 to
15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.thursday night...southwest winds 5 to 15 knots becoming south
15 to 20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.friday...south winds to 30 knots becoming west and diminishing
to 15 to 20 knots. rain. waves 4 to 7 feet building to 5 to
9 feet, then subsiding to 4 to 6 feet. waves occasionally around
11 feet. 
.saturday...northwest winds 15 to 20 knots becoming east 5 to
15 knots. a chance of rain during the day, then rain likely
saturday night. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday...east winds 15 to 25 knots becoming northwest. rain
during the day, then rain and snow sunday night. waves 2 to
4 feet building to 3 to 6 feet. 

$$