fzus61 kbuf 042003
glflo 
expires:202608050300;;623166

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt tue aug 4 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 high pressure ridge averaging 30.0 inches exits slowly 
toward new england through this weekend. a cold front should 
approach lake ontario slowly from the northwest thursday through 
this weekend.


loz062-050300-
lake ontario open waters from the niagara river to hamlin beach-
403 pm edt tue aug 4 2026

.tonight...east winds 5 to 10 knots becoming south. waves 1 foot
or less. 
.wednesday...south winds 10 knots or less becoming east. waves
1 foot or less. 
.wednesday night...east winds 10 knots or less becoming
southwest. waves 1 foot or less. 
.thursday...light and variable winds. a chance of showers. waves
1 foot or less. 
.thursday night...south winds less than 10 knots becoming west.
waves 1 foot or less. 
.friday...light and variable winds becoming southwest 5 to
10 knots. a chance of showers and thunderstorms. waves 1 foot or
less. 
.saturday...southwest winds 5 to 15 knots becoming west. a chance
of showers and thunderstorms during the day, then a chance of
showers saturday night. waves 1 foot or less. 
.sunday...west winds 5 to 15 knots becoming southwest. a chance
of showers and thunderstorms. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 042003
glflo 
expires:202608050300;;623167

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt tue aug 4 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 high pressure ridge averaging 30.0 inches exits slowly 
toward new england through this weekend. a cold front should 
approach lake ontario slowly from the northwest thursday through 
this weekend.


loz063>065-050300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 pm edt tue aug 4 2026

.tonight...east winds 5 to 15 knots becoming south. waves 1 foot
or less. 
.wednesday...south winds 5 to 15 knots becoming east. waves
2 feet or less. 
.wednesday night...east winds 5 to 10 knots becoming south. a
chance of showers overnight. waves 1 foot or less. 
.thursday...south winds 5 to 10 knots becoming southwest. a
chance of showers in the morning, then a chance of showers and
thunderstorms in the afternoon. waves 1 foot or less. 
.thursday night...south winds less than 10 knots becoming
southwest. a chance of showers and thunderstorms in the evening.
waves 1 foot or less. 
.friday...west winds 10 knots or less becoming southwest. a
chance of showers and thunderstorms during the day, then showers
likely with a chance of thunderstorms friday night. waves 1 foot
or less. 
.saturday...southwest winds 5 to 15 knots. showers likely with a
chance of thunderstorms during the day, then a chance of showers
saturday night. waves 1 foot or less. 
.sunday...west winds 5 to 15 knots becoming southwest. a chance
of showers. waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 042003
glfsl 
expires:202608050300;;623218

forecast for the saint lawrence river
including the thousand islands region
national weather service buffalo ny
403 pm edt tue aug 4 2026


slz022-024-050300-
saint lawrence river from cape vincent to saint regis
403 pm edt tue aug 4 2026

.tonight...southwest winds 10 knots or less becoming south.
mainly clear. 
.wednesday...south winds 10 knots or less becoming southwest.
sunny.
.wednesday night...southwest winds less than 10 knots. a chance
of showers overnight. 
.thursday...south winds 10 knots or less becoming southwest. a
chance of showers in the morning, then a chance of showers and
thunderstorms in the afternoon. 
.thursday night...southwest winds less than 10 knots. a chance of
showers and thunderstorms in the evening. 
.friday...light and variable winds. a chance of showers and
thunderstorms during the day, then showers likely with a chance
of thunderstorms friday night. 
.saturday...southwest winds 10 knots or less. showers likely with
a chance of thunderstorms during the day, then a chance of
showers and thunderstorms saturday night. 
.sunday...southwest winds 5 to 10 knots. a chance of showers. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 041946
glfle 
expires:202608050230;;622770

open lake forecast for lake erie
national weather service cleveland oh
346 pm edt tue aug 4 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...
high pressure of 30.00 inches over lake erie will weaken on
wednesday as it drifts east ahead of an approaching cold front. 
this front will slow just to the west of lake erie thursday  
before slowly moving east across the lake friday and saturday.


lez061-165>169-050230-
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-
346 pm edt tue aug 4 2026

.tonight...northeast winds 10 knots or less becoming southeast.
waves 1 foot or less. 
.wednesday...south winds 10 knots or less becoming north. waves
1 foot or less. 
.wednesday night...southeast winds 10 knots or less becoming
south. waves 1 foot or less. 
.thursday...southwest winds 5 to 10 knots becoming west. waves
1 foot or less. 
.thursday night...west winds 10 knots or less becoming southwest.
a chance of showers and thunderstorms overnight. waves 1 foot or
less. 
.friday...southwest winds 5 to 15 knots. showers likely with a
chance of thunderstorms during the day, then a chance of showers
and thunderstorms friday night. waves 1 foot or less. 
.saturday...southwest winds 10 to 15 knots becoming west. a
chance of showers saturday night. waves 2 feet or less. 
.sunday...west winds 5 to 15 knots becoming southwest. a chance
of showers during the day, then showers likely with a chance of
thunderstorms sunday night. waves 1 to 3 feet building to 2 to
4 feet. 

winds and waves higher in and near thunderstorms.

$$