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open lake forecast for lake ontario
national weather service buffalo ny
1009 am edt fri apr 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 30.0 inch high over the lake this evening will slide 
east into new england tonight. meanwhile, a 29.4 inch low near lake 
superior this evening will move to james bay and deepen to 29.0 
inches saturday, while pushing a trailing strong cold front across 
the lake later saturday and saturday evening. a 30.4 inch high will 
then settle southeastward across the great lakes sunday through 
monday night, before sliding off the mid-atlantic coast tuesday. a 
29.4 inch low over lower hudson bay tuesday, will weaken to 29.9 
inches by wednesday, while pushing an attendant weak cold front 
across the lake tuesday night. a 30.2 inch high will then build 
across the great lakes region wednesday and thursday.


loz062-172100-
lake ontario open waters from the niagara river to hamlin beach-
1009 am edt fri apr 17 2026

.this afternoon...north winds less than 10 knots becoming east.
areas of fog. waves 1 foot or less. 
.tonight...east winds 10 knots or less becoming southeast. waves
1 foot or less. 
.saturday...southeast winds 10 to 15 knots becoming southwest
15 to 20 knots. a chance of showers in the morning, then showers
in the afternoon. waves 1 to 3 feet building to 2 to 4 feet. 
.saturday night...west winds 15 to 20 knots becoming northwest.
rain showers in the evening, then rain showers likely overnight.
waves 3 to 5 feet. 
.sunday...west winds 15 to 20 knots becoming northwest. a chance
of rain showers. waves 3 to 5 feet. 
.monday...northwest winds 15 to 20 knots becoming southwest 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming west 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet. 

$$

fzus61 kbuf 171410
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open lake forecast for lake ontario
national weather service buffalo ny
1009 am edt fri apr 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 30.0 inch high over the lake this evening will slide 
east into new england tonight. meanwhile, a 29.4 inch low near lake 
superior this evening will move to james bay and deepen to 29.0 
inches saturday, while pushing a trailing strong cold front across 
the lake later saturday and saturday evening. a 30.4 inch high will 
then settle southeastward across the great lakes sunday through 
monday night, before sliding off the mid-atlantic coast tuesday. a 
29.4 inch low over lower hudson bay tuesday, will weaken to 29.9 
inches by wednesday, while pushing an attendant weak cold front 
across the lake tuesday night. a 30.2 inch high will then build 
across the great lakes region wednesday and thursday.


loz063>065-172100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1009 am edt fri apr 17 2026

.this afternoon...north winds 5 to 10 knots becoming northwest.
patchy fog. waves 1 foot or less. 
.tonight...west winds 10 knots or less becoming southeast 10 to
15 knots. waves 1 foot or less. 
.saturday...southeast winds 15 to 20 knots becoming south.
showers in the afternoon. waves 1 to 3 feet building to 3 to
5 feet. 
.saturday night...south winds 15 to 20 knots becoming west. rain
showers. waves 3 to 5 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. rain
showers during the day. waves 3 to 6 feet building to 4 to
7 feet. waves occasionally around 9 feet. 
.monday...northwest winds 15 to 20 knots becoming west. waves
3 to 6 feet subsiding to 2 to 4 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest. a
chance of rain showers tuesday night. waves 1 to 3 feet building
to 2 to 4 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
1128 am edt fri apr 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...
high pressure 30.00 inches will build in briefly today. early 
saturday morning, a warm front will move north across the lake as 
low pressure 29.70 inches moves through the great lakes region and
will drag a cold front through that evening. a trough averaging 
29.90 inches will linger over lake erie on sunday and high 
pressure 30.30 inches will build in sunday evening.


lez061-165>169-172015-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
avon point to willowick oh beyond 5 nm 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-
1128 am edt fri apr 17 2026

.rest of today...light and variable winds. widespread dense fog
late this morning, then areas of dense fog early this afternoon.
waves 1 foot or less. 
.tonight...east winds 5 to 15 knots becoming southeast 15 to
20 knots. a slight chance of showers and thunderstorms late.
waves 1 to 3 feet. 
.saturday...south winds 15 to 20 knots becoming southwest.
showers with a chance of thunderstorms. waves 1 to 3 feet
building to 2 to 4 feet. 
.saturday night...west winds 15 to 20 knots becoming northwest.
rain showers in the evening, then a chance of rain showers
overnight. waves 2 to 4 feet. 
.sunday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. a chance of rain showers during the day. waves 3 to
5 feet. 
.monday...northwest winds 5 to 15 knots becoming south 15 to
20 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest. waves
3 to 5 feet. 

winds and waves higher in and near thunderstorms.

$$