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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt mon apr 27 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 30.3 inch high will ridge along the eastern seaboard 
overnight. a 29.4 inch low over the great plains will advance 
northeast into the upper great lakes late tonight into tuesday 
morning, while pushing a warm front across the lake. the low will 
head northeast to james bay tuesday night sending a cold front 
across the lake. an inverted trough averaging 29.7 inch inverted 
trough is expected across the lower great lakes wednesday through 
wednesday night. the trough/low will track to the coast of new 
england through friday while also deepening to 29.5 inches.


loz062-280900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt mon apr 27 2026

.overnight...southeast winds 15 to 20 knots diminishing to
10 to 15 knots. waves 2 to 4 feet. 
.tuesday...southeast winds 15 to 20 knots becoming south. showers
through early afternoon. waves 2 to 4 feet subsiding to 1 to
3 feet. 
.tuesday night...south winds 15 to 20 knots becoming northwest
5 to 15 knots. waves 1 to 3 feet. 
.wednesday...north winds 10 knots or less. a chance of showers in
the morning, then showers in the afternoon. waves 1 foot or less.
.wednesday night...north winds 10 to 15 knots becoming northwest.
showers. waves 1 to 3 feet building to 2 to 4 feet. 
.thursday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. a chance of rain showers during the day. waves 2 to
4 feet. 
.friday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. waves 1 to 3 feet. 
.saturday...west winds 10 to 15 knots. waves 2 to 3 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt mon apr 27 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 30.3 inch high will ridge along the eastern seaboard 
overnight. a 29.4 inch low over the great plains will advance 
northeast into the upper great lakes late tonight into tuesday 
morning, while pushing a warm front across the lake. the low will 
head northeast to james bay tuesday night sending a cold front 
across the lake. an inverted trough averaging 29.7 inch inverted 
trough is expected across the lower great lakes wednesday through 
wednesday night. the trough/low will track to the coast of new 
england through friday while also deepening to 29.5 inches.


loz063>065-280900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt mon apr 27 2026

.overnight...southeast winds 10 to 15 knots increasing to
15 to 20 knots. waves 1 to 3 feet building to 2 to 4 feet. 
.tuesday...southeast winds 15 to 20 knots. showers likely from
late morning on. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.tuesday night...south winds 15 to 25 knots becoming west and
diminishing to 10 to 15 knots. waves 3 to 5 feet subsiding to
1 to 3 feet. 
.wednesday...west winds 5 to 10 knots becoming northeast. a
chance of showers in the morning, then showers in the afternoon.
waves 2 feet or less. 
.wednesday night...northeast winds 5 to 15 knots becoming west
15 to 20 knots. showers. waves 1 to 3 feet building to 2 to
4 feet. 
.thursday...west winds 15 to 25 knots becoming northwest. rain
showers likely during the day. waves 3 to 6 feet. 
.friday...west winds 15 to 25 knots. waves 3 to 6 feet subsiding
to 2 to 4 feet. 
.saturday...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
930 pm edt mon apr 27 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 29.40 inches tracks through the northern great lakes
tonight, lifting a warm front across lake erie this evening
quickly followed by a cold front during the day tuesday. low
pressure 29.90 inches moves through the ohio valley wednesday,
before moving into new england and deepening to 29.60 inches 
thursday and friday as a trough lingers over the great lakes.


lez061-168-169-280815-
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-
930 pm edt mon apr 27 2026

.rest of tonight...southeast winds 15 to 25 knots becoming south.
a chance of showers with a slight chance of thunderstorms after
midnight. showers with a slight chance of thunderstorms late.
waves 1 to 3 feet building to 3 to 5 feet. 
.tuesday...south winds 15 to 25 knots becoming southwest and
diminishing to 10 to 15 knots. showers with a slight chance of
thunderstorms early, then a slight chance of showers and
thunderstorms from late morning on. waves 3 to 6 feet subsiding
to 1 to 3 feet. 
.tuesday night...southwest winds 10 knots or less becoming north.
waves 1 to 3 feet. 
.wednesday...northeast winds 5 to 15 knots becoming north 15 to
20 knots. showers. waves 1 to 3 feet. 
.wednesday night...northwest winds 10 to 15 knots. rain showers
in the evening. waves 1 to 3 feet. 
.thursday...northwest winds 5 to 15 knots. waves 1 to 3 feet. 
.friday...northwest winds 5 to 15 knots. waves 1 to 2 feet. 
.saturday...northwest winds 5 to 15 knots becoming west. waves
1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$