fzus61 kbuf 202002
glflo 
expires:202608210300;;067417

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt thu aug 20 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 ridge averaging 30.1 inches affects lake ontario through saturday 
as the embedded high pressure center moves from the upper great 
lakes toward the canadian maritimes. a warm front should sweep 
northward across lake ontario saturday night and a cold front should 
sweep eastward across the lake late saturday night through sunday as 
a low of 29.7 inches moves from the upper great lakes toward 
southern quebec. behind the low, a weak trough averaging 29.9 inches 
should linger over lake ontario through monday before a ridge 
averaging 30.0 inches builds from near the ohio valley on tuesday.


loz062-210300-
lake ontario open waters from the niagara river to hamlin beach-
402 pm edt thu aug 20 2026

.tonight...northwest winds 10 knots or less becoming northeast.
waves 2 feet or less. 
.friday...east winds 10 knots or less. waves 1 foot or less. 
.friday night...east winds 5 to 10 knots becoming southeast.
waves 2 feet or less. 
.saturday...southeast winds 10 knots or less becoming east. a
chance of showers and thunderstorms in the afternoon. waves
1 foot or less. 
.saturday night...southeast winds 5 to 10 knots becoming
southwest. showers with a chance of thunderstorms in the evening,
then showers overnight. waves 1 to 2 feet. 
.sunday...west winds 15 to 20 knots. showers likely with a chance
of thunderstorms. waves 1 to 3 feet building to 2 to 4 feet. 
.monday...west winds 15 to 20 knots diminishing to 10 to
15 knots. a chance of showers during the day. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.tuesday...west winds 5 to 15 knots becoming southwest. waves
1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 202002
glflo 
expires:202608210300;;067418

open lake forecast for lake ontario
national weather service buffalo ny
402 pm edt thu aug 20 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 ridge averaging 30.1 inches affects lake ontario through saturday 
as the embedded high pressure center moves from the upper great 
lakes toward the canadian maritimes. a warm front should sweep 
northward across lake ontario saturday night and a cold front should 
sweep eastward across the lake late saturday night through sunday as 
a low of 29.7 inches moves from the upper great lakes toward 
southern quebec. behind the low, a weak trough averaging 29.9 inches 
should linger over lake ontario through monday before a ridge 
averaging 30.0 inches builds from near the ohio valley on tuesday.


loz063>065-210300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 pm edt thu aug 20 2026

.tonight...northwest winds 5 to 15 knots becoming east. waves
2 feet or less. 
.friday...east winds 10 knots or less becoming northeast. waves
1 foot or less. 
.friday night...northeast winds 5 to 10 knots becoming southeast.
waves 1 foot or less. 
.saturday...southeast winds 5 to 15 knots. a chance of showers
and thunderstorms in the afternoon. waves 2 feet or less. 
.saturday night...southeast winds 5 to 15 knots becoming south
15 to 20 knots. showers likely with a chance of thunderstorms in
the evening, then showers likely overnight. waves 1 to 3 feet. 
.sunday...southwest winds 15 to 20 knots becoming west. showers
with a chance of thunderstorms. waves 1 to 3 feet building to
2 to 4 feet. 
.monday...west winds 15 to 25 knots diminishing to 10 to
15 knots. showers likely during the day, then a chance of showers
monday night. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.tuesday...west winds 5 to 15 knots becoming southwest. waves
1 to 3 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 201943
glfle 
expires:202608210215;;066821

open lake forecast for lake erie
national weather service cleveland oh
343 pm edt thu aug 20 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 30.10 inches builds into the region through friday.
low pressure 29.90 inches moves into the great lakes region on 
saturday. the low will drag a cold front across the lake saturday
night into sunday.


lez061-168-169-210215-
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-
343 pm edt thu aug 20 2026

.tonight...northeast winds 5 to 15 knots becoming east. waves
2 feet or less. 
.friday...east winds 5 to 10 knots becoming northeast. waves
1 foot or less. 
.friday night...northeast winds 5 to 10 knots becoming south.
waves 1 foot or less. 
.saturday...south winds 5 to 10 knots becoming west. a chance of
showers and thunderstorms in the afternoon. waves 2 feet or less.
.saturday night...southwest winds 10 to 15 knots becoming
northwest. showers with a chance of thunderstorms. waves 1 to
3 feet. 
.sunday...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. showers likely with a chance of thunderstorms during
the day, then a chance of showers sunday night. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.monday...northwest winds 5 to 15 knots becoming west. waves 1 to
3 feet. 
.tuesday...west winds 5 to 10 knots becoming south. waves 1 foot
or less. 

winds and waves higher in and near thunderstorms.

$$