fzus61 kbuf 170802
glflo 
expires:202607171500;;108920

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri jul 17 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 builds from the upper great lakes 
today. a warm front should sweep northeastward across lake ontario 
tonight through saturday morning as the ridge exits toward new 
england and a 29.7 inch low moves eastward across the northwestern 
great lakes. later on saturday, a cold front should move eastward 
across lake ontario as the low moves farther eastward toward 
southern quebec. behind the low and cold front, a 29.9 inch ridge 
should slide southeastward across the great lakes through monday. a 
warm front should sweep northeastward across lake ontario monday 
night and a cold front should sweep eastward across the lake on 
tuesday as a 29.5 inch low moves eastward across northern ontario 
and northern quebec.


loz062-171500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt fri jul 17 2026

.today...east winds 10 knots or less. smoke. waves 2 feet or
less. 
.tonight...southeast winds 5 to 15 knots becoming south. smoke
through the early overnight. a chance of showers and
thunderstorms late. waves 1 foot or less. 
.saturday...southwest winds 15 to 20 knots. showers with a chance
of thunderstorms. waves 1 to 2 feet building to 3 to 5 feet. 
.saturday night...west winds 15 to 20 knots becoming north.
showers with a chance of thunderstorms in the evening. waves 3 to
5 feet. 
.sunday...north winds 5 to 15 knots becoming west. waves 1 to
3 feet subsiding to 1 foot or less. 
.monday...southwest winds 5 to 10 knots becoming south and
increasing to 15 to 20 knots. showers likely monday night. waves
2 feet or less. 
.tuesday...southwest winds 15 to 25 knots becoming west. showers
with a chance of thunderstorms. waves 2 to 4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 170802
glflo 
expires:202607171500;;108921

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt fri jul 17 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 builds from the upper great lakes 
today. a warm front should sweep northeastward across lake ontario 
tonight through saturday morning as the ridge exits toward new 
england and a 29.7 inch low moves eastward across the northwestern 
great lakes. later on saturday, a cold front should move eastward 
across lake ontario as the low moves farther eastward toward 
southern quebec. behind the low and cold front, a 29.9 inch ridge 
should slide southeastward across the great lakes through monday. a 
warm front should sweep northeastward across lake ontario monday 
night and a cold front should sweep eastward across the lake on 
tuesday as a 29.5 inch low moves eastward across northern ontario 
and northern quebec.


loz063>065-171500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt fri jul 17 2026

.today...northeast winds 10 knots or less becoming southeast.
waves 2 feet or less. 
.tonight...southeast winds 5 to 15 knots becoming south 15 to
20 knots. patchy smoke in the evening. a chance of showers late.
waves 2 feet or less. 
.saturday...south winds 15 to 20 knots becoming southwest.
showers likely in the morning, then showers with a chance of
thunderstorms in the afternoon. waves 1 to 3 feet building to
3 to 5 feet. 
.saturday night...west winds 15 to 20 knots becoming north.
showers with a chance of thunderstorms in the evening, then a
chance of showers overnight. waves 3 to 6 feet. 
.sunday...northwest winds 15 to 20 knots diminishing to 5 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.monday...southwest winds 5 to 15 knots becoming south and
increasing to 15 to 25 knots. a chance of showers monday night.
waves 1 foot or less building to 2 to 4 feet. 
.tuesday...south winds 15 to 25 knots becoming west. showers with
a chance of thunderstorms. waves 3 to 5 feet subsiding to 2 to
4 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 170740
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open lake forecast for lake erie
national weather service cleveland oh
340 am edt fri jul 17 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 warm front will lift northeast across lake erie tonight into
saturday, followed by a cold front from the northwest saturday 
night. high pressure 30.00 inches will briefly build sunday into 
monday, followed by another cold front on tuesday.


lez061-167>169-171415-
ripley to buffalo ny extending from 5nm 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-
340 am edt fri jul 17 2026

...dense smoke advisory in effect until 4 pm edt this afternoon...

.today...light and variable winds. smoke. waves 1 foot or less. 
.tonight...southeast winds 5 to 15 knots becoming southwest 15 to
20 knots. smoke. a chance of showers with a slight chance of
thunderstorms after midnight. a chance of showers and
thunderstorms late. waves 1 to 3 feet. 
.saturday...southwest winds 15 to 25 knots. smoke in the morning.
a chance of showers and thunderstorms in the morning, then
showers with a chance of thunderstorms in the afternoon. waves
3 to 6 feet. 
.saturday night...west winds 15 to 20 knots becoming north 10 to
15 knots. showers with a chance of thunderstorms in the evening.
waves 3 to 6 feet subsiding to 2 to 4 feet. 
.sunday...north winds 5 to 15 knots becoming south less than
10 knots. waves 1 to 3 feet subsiding to 1 foot or less. 
.monday...south winds 5 to 15 knots increasing to 15 to 25 knots.
showers likely monday night. waves 2 feet or less building to
3 to 6 feet. 
.tuesday...southwest winds 15 to 25 knots becoming northwest.
showers likely with a chance of thunderstorms during the day,
then a chance of showers tuesday night. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 

winds and waves higher in and near thunderstorms.

$$