fzus61 kbuf 130202
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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt tue may 12 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 over the central great lakes tonight 
will move to a little north of lake ontario by wednesday evening, 
then will weaken into a trough over eastern new york and new england 
thursday. a 30.1 inch high will then build from the central great 
lakes and ohio valley thursday night to the lower great lakes and 
mid atlantic friday, then off the carolina coast saturday. a 29.2 
inch low over the central plains will then push its warm front into 
the lower lakes region on sunday.


loz062-130900-
lake ontario open waters from the niagara river to hamlin beach-
1002 pm edt tue may 12 2026

.overnight...east winds 5 to 10 knots becoming southeast
and increasing to 15 to 20 knots. showers. waves 1 to 3 feet. 
.wednesday...south winds 15 to 20 knots becoming southwest.
showers early, then a chance of showers. waves 2 to 4 feet. 
.wednesday night...west winds 15 to 20 knots diminishing to 10 to
15 knots. waves 2 to 4 feet. 
.thursday...west winds 5 to 15 knots becoming northwest. waves
1 to 2 feet. 
.thursday night...northwest winds 5 to 10 knots. waves around
1 foot. 
.friday...west winds 5 to 15 knots becoming southwest. waves
2 feet or less. 
.saturday...southwest winds 15 to 20 knots becoming west 10 to
15 knots. waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.sunday...west winds 5 to 10 knots becoming east. waves 2 feet or
less. 

$$

fzus61 kbuf 130202
glflo 
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open lake forecast for lake ontario
national weather service buffalo ny
1002 pm edt tue may 12 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 over the central great lakes tonight 
will move to a little north of lake ontario by wednesday evening, 
then will weaken into a trough over eastern new york and new england 
thursday. a 30.1 inch high will then build from the central great 
lakes and ohio valley thursday night to the lower great lakes and 
mid atlantic friday, then off the carolina coast saturday. a 29.2 
inch low over the central plains will then push its warm front into 
the lower lakes region on sunday.


loz063>065-130900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 pm edt tue may 12 2026

.overnight...east winds less than 10 knots becoming
southeast and increasing to 15 to 20 knots. showers. waves 1 to
3 feet. 
.wednesday...southeast winds 15 to 25 knots becoming southwest.
showers in the morning, then showers likely in the afternoon.
waves 3 to 5 feet subsiding to 2 to 4 feet. 
.wednesday night...southwest winds 5 to 15 knots. a chance of
showers. waves 1 to 3 feet. 
.thursday...southwest winds 5 to 10 knots becoming northwest.
waves 2 feet or less. 
.thursday night...northwest winds 5 to 10 knots. waves 2 feet or
less. 
.friday...northwest winds 5 to 10 knots becoming southwest. waves
2 feet or less. 
.saturday...south winds 10 to 15 knots becoming west. a chance of
showers. waves 1 to 3 feet building to 2 to 4 feet, then
subsiding to 1 to 3 feet. 
.sunday...west winds 5 to 15 knots becoming southeast. waves 1 to
3 feet subsiding to 1 foot or less. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
1010 pm edt tue may 12 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 29.60 inches will move across the great lakes 
tonight into wednesday, pulling a cold front east across lake erie
on wednesday. a trough averaging 29.90 inches will remain across 
the lake on thursday. high pressure 30.10 inches will move through
the region thursday night into friday. a warm front will move 
across the lake on friday night into saturday.


lez061-168-169-130815-
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-
1010 pm edt tue may 12 2026

.rest of tonight...southeast winds 10 to 15 knots becoming south
15 to 20 knots. a slight chance of showers late this evening,
then showers with a slight chance of thunderstorms after
midnight. waves 1 foot or less building to 2 to 4 feet. 
.wednesday...southwest winds 15 to 20 knots becoming west.
showers early, then a chance of showers with a slight chance of
thunderstorms late in the morning. a slight chance of showers and
thunderstorms early in the afternoon. waves 3 to 5 feet building
to 4 to 7 feet. waves occasionally around 9 feet. 
.wednesday night...west winds 15 to 20 knots. a chance of
showers. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.thursday...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers in the morning. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.thursday night...northwest winds 5 to 15 knots. waves 1 to
3 feet. 
.friday...west winds 10 knots or less becoming south 10 to
15 knots. waves 2 feet or less. 
.saturday...southwest winds 5 to 15 knots becoming west. waves
1 to 3 feet. 
.sunday...southeast winds 10 knots or less. a chance of showers
sunday night. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$