fzus61 kbuf 120803
glflo 
expires:202608121500;;045750

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt wed aug 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 30.0 inch high will shift east of the lake this morning, before a 
trough averaging 29.7 inches moves over the lake this afternoon, 
where it will linger through thursday. a cold front then sweeps 
across the lake thursday night, with a 30.2 inch high pressure ridge 
building in from the upper great lakes on friday, settling over the 
lower great lakes region on saturday. a low averaging 29.8 inches is 
expected to approach the lake sunday.


loz062-121500-
lake ontario open waters from the niagara river to hamlin beach-
403 am edt wed aug 12 2026

.today...light and variable winds. a chance of showers and
thunderstorms early this afternoon. showers likely with a chance
of thunderstorms late. waves 1 foot or less. 
.tonight...southwest winds less than 10 knots becoming northwest.
a chance of showers and thunderstorms early. waves 1 foot or
less. 
.thursday...northwest winds 10 knots or less becoming west. waves
1 foot or less. 
.thursday night...west winds 10 knots or less becoming north.
waves 1 foot or less. 
.friday...north winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.saturday...northeast winds 5 to 10 knots becoming southeast. a
chance of showers saturday night. waves 1 foot or less. 
.sunday...southeast winds 5 to 10 knots becoming northwest.
showers likely with a chance of thunderstorms. waves 2 feet or
less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 120803
glflo 
expires:202608121500;;045751

open lake forecast for lake ontario
national weather service buffalo ny
403 am edt wed aug 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 30.0 inch high will shift east of the lake this morning, before a 
trough averaging 29.7 inches moves over the lake this afternoon, 
where it will linger through thursday. a cold front then sweeps 
across the lake thursday night, with a 30.2 inch high pressure ridge 
building in from the upper great lakes on friday, settling over the 
lower great lakes region on saturday. a low averaging 29.8 inches is 
expected to approach the lake sunday.


loz063>065-121500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 am edt wed aug 12 2026

.today...west winds 10 knots or less. a chance of showers and
thunderstorms late. waves 1 foot or less. 
.tonight...west winds 5 to 10 knots. a chance of showers and
thunderstorms in the evening. waves 1 foot or less. 
.thursday...northwest winds 10 knots or less becoming west. waves
1 foot or less. 
.thursday night...west winds 5 to 10 knots becoming north. waves
1 foot or less. 
.friday...north winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.saturday...northeast winds 10 knots or less becoming south.
waves 1 foot or less. 
.sunday...southeast winds 5 to 10 knots becoming northwest.
showers likely with a chance of thunderstorms. waves 2 feet or
less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 120801
glfle 
expires:202608121430;;045602

open lake forecast for lake erie
national weather service cleveland oh
401 am edt wed aug 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...
a front wavering south of lake erie will finally move south as a
cold front by tonight as weak low pressure 29.80 inches tracks
through the ohio valley. high pressure 30.20 inches builds over
the great lakes thursday and remains in place through saturday. 
low pressure 29.90 inches moves into the region on sunday,
lifting a warm front across the lake in the morning followed by a
cold front in the evening.


lez061-168-169-121430-
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-
401 am edt wed aug 12 2026

.today...southwest winds 5 to 10 knots becoming west. a slight
chance of showers and thunderstorms late. waves 1 foot or less. 
.tonight...west winds 10 knots or less becoming northwest. a
chance of showers and thunderstorms early, then a slight chance
of showers and thunderstorms. a slight chance of showers late.
waves 1 foot or less. 
.thursday...northwest winds less than 10 knots becoming west.
waves 1 foot or less. 
.thursday night...west winds 10 knots or less becoming east.
waves 2 feet or less. 
.friday...northeast winds 5 to 10 knots becoming east. waves
2 feet or less. 
.saturday...east winds 5 to 10 knots becoming southeast. a chance
of showers saturday night. waves 2 feet or less. 
.sunday...south winds 10 to 15 knots becoming northwest. showers
likely with a chance of thunderstorms during the day, then a
chance of showers sunday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$