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open lake forecast for lake ontario
national weather service buffalo ny
1009 pm edt tue mar 17 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 surface high centered over the lower ohio 
valley will ridge northward, across the lake tonight. the high will 
then shift east of the lake wednesday and reach the east coast by 
wednesday evening. a 30.2 inch high will move into the great lakes 
region thursday. a 29.8 inch low will move from james bay to the 
canadian maritimes friday. this may result in a cold front crossing 
the lake through friday night while also sending a 29.8 inch sfc low 
across the lake through. a 30.2 inch sfc high over the southeast us 
will briefly ridge north to the lake saturday into early sunday 
before another cold front crosses the region.


loz062-180900-
lake ontario open waters from the niagara river to hamlin beach-
1009 pm edt tue mar 17 2026

.rest of tonight...west winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of snow showers late this evening. waves 4 to
7 feet subsiding to 2 to 4 feet. waves occasionally around
9 feet. 
.wednesday...southwest winds 5 to 15 knots becoming south. waves
1 to 3 feet. 
.wednesday night...south winds 10 to 15 knots increasing to 15 to
20 knots. waves 1 to 3 feet. 
.thursday...south winds 10 to 15 knots becoming southwest. a
chance of rain showers in the afternoon. waves 1 to 3 feet. 
.thursday night...west winds 5 to 10 knots becoming northwest. a
chance of rain showers. waves 1 to 2 feet. 
.friday...west winds 5 to 10 knots becoming northeast and
increasing to 15 to 20 knots. a chance of rain showers during the
day, then a chance of rain and snow showers friday night. waves
1 to 3 feet building to 3 to 6 feet. 
.saturday...northeast winds 15 to 25 knots becoming west to
30 knots. a chance of rain and snow showers during the day, then
a chance of rain showers saturday night. waves 5 to 8 feet. waves
occasionally around 10 feet. 
.sunday...northwest winds to 30 knots. a chance of rain and snow
showers. waves 6 to 9 feet subsiding to 5 to 8 feet. waves
occasionally around 11 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1009 pm edt tue mar 17 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 surface high centered over the lower ohio 
valley will ridge northward, across the lake tonight. the high will 
then shift east of the lake wednesday and reach the east coast by 
wednesday evening. a 30.2 inch high will move into the great lakes 
region thursday. a 29.8 inch low will move from james bay to the 
canadian maritimes friday. this may result in a cold front crossing 
the lake through friday night while also sending a 29.8 inch sfc low 
across the lake through. a 30.2 inch sfc high over the southeast us 
will briefly ridge north to the lake saturday into early sunday 
before another cold front crosses the region.


loz063>065-180900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1009 pm edt tue mar 17 2026

.rest of tonight...northwest winds 15 to 25 knots diminishing to
10 to 15 knots. lake effect snow showers, then a chance of snow
showers late. waves 5 to 9 feet subsiding to 3 to 6 feet. waves
occasionally around 11 feet. 
.wednesday...west winds 5 to 10 knots becoming southeast. snow
showers likely early, then a chance of snow showers late in the
morning. waves 2 to 4 feet subsiding to 2 feet or less. 
.wednesday night...southeast winds 5 to 15 knots becoming south
15 to 20 knots. waves 2 feet or less building to 2 to 4 feet. 
.thursday...south winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.thursday night...southwest winds around 10 knots becoming west.
a chance of rain showers. waves 2 feet or less. 
.friday...west winds 5 to 10 knots becoming north and increasing
to 15 to 25 knots. a chance of rain and snow showers friday
night. waves 1 to 3 feet building to 3 to 6 feet. 
.saturday...northeast winds to 30 knots becoming west. a chance
of rain and snow showers. waves 4 to 7 feet building to 7 to
10 feet. waves occasionally around 13 feet. 
.sunday...northwest winds to 30 knots. a chance of rain and snow
showers. waves 7 to 11 feet. waves occasionally around 14 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
928 pm edt tue mar 17 2026

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 high pressure ridge averaging 30.40 inches builds eastward
across lake erie tonight and then exits slowly toward the east and
south wednesday through saturday. in addition, a warm front will
sweep northward across lake erie wednesday night. on sunday, a
cold front should sweep southward across lake erie as a low moves
northeastward from southern quebec toward labrador and deepens to
29.00 inches. 


lez061-168-169-180830-
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 edt tue mar 17 2026

.rest of tonight...west winds 5 to 15 knots becoming southwest. a
chance of snow showers late this evening, then a chance of snow
after midnight. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday...southwest winds 5 to 10 knots becoming south. a
chance of snow early. waves 1 to 3 feet. 
.wednesday night...south winds 5 to 15 knots. waves 1 to 2 feet. 
.thursday...south winds 5 to 10 knots becoming west. a chance of
rain. waves 1 to 2 feet. 
.thursday night...west winds 10 knots or less. a chance of rain
in the evening. waves 1 foot or less. 
.friday...southwest winds 10 knots or less becoming southeast. a
chance of rain friday night. waves 2 feet or less. 
.saturday...south winds 10 to 15 knots becoming southwest. waves
1 to 3 feet. 
.sunday...southwest winds 10 to 15 knots becoming north. a chance
of rain and snow during the day. waves 2 to 4 feet building to
3 to 5 feet, then subsiding to 2 to 4 feet. 

$$