fzus61 kbuf 211403
glflo 
expires:202607212100;;350692

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt tue jul 21 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 29.3 inch low will be near james bay with multiple frontal 
boundaries crossing the lake today through tonight. a secondary cold 
front will cross the lake wednesday, with a 30.2 inch high building 
across the lower great lakes region wednesday night through friday. 
the high will move off the east coast saturday.


loz062-212100-
lake ontario open waters from the niagara river to hamlin beach-
1003 am edt tue jul 21 2026

.rest of today...south winds 15 to 25 knots becoming southwest.
showers with a chance of thunderstorms. some thunderstorms may
produce gusty winds. waves 3 to 5 feet. 
.tonight...southwest winds 15 to 20 knots becoming west. showers
with a chance of thunderstorms early, then a chance of showers
and thunderstorms late in the evening. some thunderstorms may
produce gusty winds in the evening. waves 3 to 5 feet. 
.wednesday...west winds 15 to 25 knots. waves 3 to 6 feet
building to 4 to 7 feet. waves occasionally around 9 feet. 
.wednesday night...northwest winds 15 to 20 knots becoming west
10 to 15 knots. waves 3 to 6 feet subsiding to 1 to 3 feet. 
.thursday...west winds 10 knots or less becoming southwest. waves
2 feet or less. 
.friday...south winds 10 knots or less becoming southeast. waves
1 foot or less. 
.saturday...south winds 10 knots or less becoming southwest.
waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 211403
glflo 
expires:202607212100;;350693

open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt tue jul 21 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 29.3 inch low will be near james bay with multiple frontal 
boundaries crossing the lake today through tonight. a secondary cold 
front will cross the lake wednesday, with a 30.2 inch high building 
across the lower great lakes region wednesday night through friday. 
the high will move off the east coast saturday.


loz063>065-212100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 am edt tue jul 21 2026

.rest of today...south winds 15 to 20 knots. showers with a
chance of thunderstorms late this morning, then showers with
thunderstorms likely this afternoon. some thunderstorms may
produce gusty winds. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.tonight...south winds 10 to 15 knots becoming west 15 to
20 knots. showers likely with a chance of thunderstorms in the
evening, then a chance of showers and thunderstorms after
midnight. a chance of showers late. some thunderstorms may
produce gusty winds in the evening. waves 2 to 4 feet building to
3 to 6 feet. 
.wednesday...west winds 15 to 25 knots. waves 5 to 8 feet. waves
occasionally around 10 feet. 
.wednesday night...west winds 15 to 25 knots diminishing to 10 to
15 knots. waves 5 to 8 feet subsiding to 2 to 4 feet. waves
occasionally around 10 feet. 
.thursday...west winds 5 to 15 knots becoming southwest less than
10 knots. waves 1 to 3 feet subsiding to 1 foot or less. 
.friday...south winds 10 knots or less. waves 1 foot or less. 
.saturday...south winds 10 knots or less. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 211948
glfle 
expires:202607220230;;366290

open lake forecast for lake erie
national weather service cleveland oh
348 pm edt tue jul 21 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 strong cold front continues to move east across lake erie
through this evening. a trough averaging 29.90 inches will linger
over the lower great lakes through wednesday evening. high
pressure 30.20 inches builds into the region early thursday and
drifts to the east through saturday. 


lez061-168-169-220230-
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-
348 pm edt tue jul 21 2026

.tonight...west winds 15 to 20 knots becoming northwest. showers
with thunderstorms likely this evening, then a chance of showers
with a slight chance of thunderstorms after midnight. waves 3 to
6 feet. 
.wednesday...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. a slight chance of showers. waves 3 to 5 feet subsiding
to 2 to 4 feet. 
.wednesday night...northwest winds 5 to 15 knots. waves 1 to
3 feet. 
.thursday...northwest winds 10 knots or less becoming west. waves
1 foot or less. 
.thursday night...southwest winds less than 10 knots becoming
southeast. waves 1 foot or less. 
.friday...southeast winds 10 knots or less. waves 1 foot or less.
.saturday...south winds 10 knots or less. waves 1 foot or less. 
.sunday...southwest winds 5 to 15 knots. a chance of showers
during the day, then showers likely with a chance of
thunderstorms sunday night. waves 1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$