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open lake forecast for lake ontario
national weather service buffalo ny
409 am edt thu apr 16 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 29.6 inch low will move across the central great lakes 
today before reaching southern quebec tonight, then drift off the 
new england coast by friday night. a 30.0 inch high is then forecast 
to build from the central great lakes friday to the lower great 
lakes saturday morning, then off the east coast saturday night. a 
29.3 inch surface low to the north of lake superior saturday will 
deepen to 28.9 inches by sunday, with a trailing cold front crossing 
the lake saturday night. a 30.4 inch surface high will push from the 
plains to the upper ohio valley from sunday through monday. the high 
is expected to move off the mid-atlantic coast tuesday.


loz062-161500-
lake ontario open waters from the niagara river to hamlin beach-
409 am edt thu apr 16 2026

.today...southwest winds 10 to 15 knots increasing to 15 to
20 knots. patchy fog this morning. a chance of showers early,
then showers likely late this morning. showers with a chance of
thunderstorms this afternoon. waves 1 to 3 feet building to 2 to
4 feet. 
.tonight...southwest winds 15 to 20 knots becoming northwest and
diminishing to 5 to 10 knots. showers likely with a chance of
thunderstorms early, then a chance of showers. patchy fog from
late evening on. waves 2 to 4 feet subsiding to 1 to 2 feet. 
.friday...northwest winds 10 knots or less becoming south. patchy
fog in the morning. waves 1 foot or less. 
.friday night...southeast winds 10 knots or less becoming east.
waves 1 foot or less. 
.saturday...southeast winds 10 to 15 knots becoming west 15 to
20 knots. showers. waves 2 feet or less building to 2 to 4 feet. 
.sunday...west winds 15 to 25 knots becoming northwest. a chance
of rain showers. waves 3 to 6 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.monday...northwest winds 15 to 25 knots becoming southwest and
diminishing to 10 to 15 knots. waves 4 to 7 feet subsiding to
1 to 3 feet. waves occasionally around 9 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
409 am edt thu apr 16 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 29.6 inch low will move across the central great lakes 
today before reaching southern quebec tonight, then drift off the 
new england coast by friday night. a 30.0 inch high is then forecast 
to build from the central great lakes friday to the lower great 
lakes saturday morning, then off the east coast saturday night. a 
29.3 inch surface low to the north of lake superior saturday will 
deepen to 28.9 inches by sunday, with a trailing cold front crossing 
the lake saturday night. a 30.4 inch surface high will push from the 
plains to the upper ohio valley from sunday through monday. the high 
is expected to move off the mid-atlantic coast tuesday.


loz063>065-161500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
409 am edt thu apr 16 2026

.today...southwest winds 5 to 15 knots. patchy dense fog this
morning. a chance of showers early, then showers late this
morning. showers with a chance of thunderstorms this afternoon.
some thunderstorms may produce gusty winds late. waves 1 to
3 feet. 
.tonight...southwest winds 5 to 15 knots becoming northwest.
showers with a chance of thunderstorms early, then showers likely
late in the evening. a chance of showers after midnight. patchy
fog from late evening on. some thunderstorms may produce gusty
winds early. waves 1 to 3 feet. 
.friday...northwest winds 10 knots or less becoming west. patchy
fog in the morning. waves 2 feet or less. 
.friday night...southwest winds 10 knots or less becoming
southeast. waves 1 foot or less. 
.saturday...southeast winds 10 to 15 knots becoming west 15 to
20 knots. showers likely. waves 1 to 3 feet building to 3 to
5 feet. 
.sunday...west winds 15 to 25 knots becoming northwest to
30 knots. rain showers likely during the day, then a chance of
rain showers sunday night. waves 3 to 6 feet building to 5 to
9 feet. waves occasionally around 11 feet. 
.monday...northwest winds 15 to 25 knots becoming west. waves
5 to 9 feet subsiding to 3 to 5 feet. waves occasionally around
11 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
359 am edt thu apr 16 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...
low pressure 29.70 inches will move through the great lakes region
today and extend a cold front across the lake this evening. brief
high pressure 30.00 inches will pass over the lake on friday. low
pressure 29.50 inches will enter, extend a warm front near the
lake on friday night. this low will move east and extend a cold
front across the lake by saturday night. a trough averaging 30.00
inches will remain over the lake on sunday. high pressure 30.30
inches will enter for monday.


lez061-165>169-161415-
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-
359 am edt thu apr 16 2026

.today...south winds 10 to 15 knots becoming southwest 15 to
20 knots. a chance of showers and thunderstorms this morning,
then showers likely with a chance of thunderstorms this
afternoon. waves 1 to 3 feet. 
.tonight...southwest winds 5 to 15 knots becoming northwest. a
chance of showers and thunderstorms early, then a slight chance
of showers and thunderstorms late in the evening. a slight chance
of showers after midnight. waves 1 to 2 feet. 
.friday...northwest winds less than 10 knots becoming northeast.
waves 1 foot or less. 
.friday night...east winds 5 to 15 knots becoming southeast 15 to
20 knots. waves 2 feet or less. 
.saturday...south winds 15 to 20 knots becoming west. rain
showers with a chance of thunderstorms during the day, then a
chance of rain showers saturday night. waves 2 to 4 feet building
to 3 to 5 feet. 
.sunday...west winds 15 to 20 knots becoming northwest. a chance
of rain showers during the day. waves 3 to 6 feet. 
.monday...northwest winds 15 to 20 knots becoming south. waves
3 to 5 feet subsiding to 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$