fzus61 kbuf 182003
glflo 
expires:202607190300;;193638

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt sat jul 18 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 cold front will slice across the lake this afternoon, followed by 
a secondary cold front crossing the lake overnight, with both fronts 
attached to a 29.4 inch area of low pressure crossing southeastern 
canada. a 30.0 inch area of high pressure will build across the 
great lakes region from west to east sunday into monday, followed by 
a warm front crossing the lake monday night and another cold front 
tuesday night, with these fronts attached to a 29.4 inch area of low 
pressure near james bay. a secondary cold front will cross the lake 
wednesday, with a 30.1 inch high building across the lower great 
lakes region wednesday night through friday.


loz062-190300-
lake ontario open waters from the niagara river to hamlin beach-
403 pm edt sat jul 18 2026

...severe thunderstorm watch 494 in effect until 9 pm edt this
evening...

.tonight...west winds 15 to 20 knots becoming north. waves 3 to
5 feet subsiding to 2 to 4 feet. 
.sunday...north winds 5 to 15 knots becoming west. waves 1 to
3 feet subsiding to 1 foot or less. 
.sunday night...west winds 10 knots or less becoming northwest.
waves 1 foot or less. 
.monday...southwest winds 10 knots or less becoming south. waves
1 foot or less. 
.monday night...southeast winds 5 to 15 knots becoming south.
waves 2 feet or less. 
.tuesday...south winds 15 to 20 knots becoming west. showers with
a chance of thunderstorms. waves 2 to 4 feet. 
.wednesday...west winds 15 to 25 knots becoming northwest. a
chance of showers during the day. waves 3 to 6 feet building to
4 to 7 feet, then subsiding to 3 to 5 feet. waves occasionally
around 9 feet. 
.thursday...northwest winds 5 to 15 knots becoming southwest.
waves 1 to 3 feet subsiding to 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 182003
glflo 
expires:202607190300;;193640

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt sat jul 18 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 cold front will slice across the lake this afternoon, followed by 
a secondary cold front crossing the lake overnight, with both fronts 
attached to a 29.4 inch area of low pressure crossing southeastern 
canada. a 30.0 inch area of high pressure will build across the 
great lakes region from west to east sunday into monday, followed by 
a warm front crossing the lake monday night and another cold front 
tuesday night, with these fronts attached to a 29.4 inch area of low 
pressure near james bay. a secondary cold front will cross the lake 
wednesday, with a 30.1 inch high building across the lower great 
lakes region wednesday night through friday.


loz063-064-190300-
lake ontario open waters from hamlin beach to mexico bay-
403 pm edt sat jul 18 2026

...severe thunderstorm watch 494 in effect until 9 pm edt this
evening...

.tonight...west winds 15 to 25 knots becoming north. a chance of
showers and thunderstorms early. waves 4 to 7 feet subsiding to
3 to 5 feet. waves occasionally around 9 feet. 
.sunday...north winds 15 to 20 knots becoming west 5 to 15 knots.
waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday night...west winds 5 to 15 knots. waves 1 to 3 feet. 
.monday...west winds 10 knots or less becoming southeast. waves
1 foot or less. 
.monday night...southeast winds 10 knots or less becoming south
and increasing to 15 to 20 knots overnight. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest. showers
with a chance of thunderstorms. waves 2 to 4 feet. 
.wednesday...west winds 15 to 25 knots. showers likely during the
day, then a chance of showers wednesday night. waves 3 to 6 feet
building to 5 to 8 feet, then subsiding to 3 to 6 feet. waves
occasionally around 10 feet. 
.thursday...northwest winds 5 to 15 knots becoming west. waves
2 to 4 feet subsiding to 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kbuf 182003
glflo 
expires:202607190300;;193639

open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt sat jul 18 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 cold front will slice across the lake this afternoon, followed by 
a secondary cold front crossing the lake overnight, with both fronts 
attached to a 29.4 inch area of low pressure crossing southeastern 
canada. a 30.0 inch area of high pressure will build across the 
great lakes region from west to east sunday into monday, followed by 
a warm front crossing the lake monday night and another cold front 
tuesday night, with these fronts attached to a 29.4 inch area of low 
pressure near james bay. a secondary cold front will cross the lake 
wednesday, with a 30.1 inch high building across the lower great 
lakes region wednesday night through friday.


loz065-190300-
lake ontario open waters from mexico bay to the saint lawrence
river-
403 pm edt sat jul 18 2026

.tonight...southwest winds 15 to 25 knots becoming north. a
chance of showers and thunderstorms early, then a chance of
showers late this evening. waves 4 to 7 feet subsiding to 3 to
6 feet. waves occasionally around 9 feet. 
.sunday...north winds 15 to 20 knots becoming west 10 to
15 knots. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday night...west winds 5 to 15 knots. waves 1 to 3 feet. 
.monday...southwest winds 5 to 10 knots. waves 1 foot or less. 
.monday night...south winds 10 knots or less increasing to 15 to
20 knots. waves 1 to 3 feet. 
.tuesday...south winds 15 to 20 knots becoming southwest. showers
with a chance of thunderstorms. waves 2 to 4 feet. 
.wednesday...west winds 15 to 20 knots. showers likely during the
day, then a chance of showers wednesday night. waves 3 to 5 feet
building to 4 to 7 feet, then subsiding to 3 to 6 feet. waves
occasionally around 9 feet. 
.thursday...northwest winds 5 to 15 knots becoming southwest.
waves 2 to 4 feet subsiding to 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 182152
glfle 
expires:202607190215;;198478

open lake forecast for lake erie
national weather service cleveland oh
552 pm edt sat jul 18 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...
low pressure 29.70 inches enters the region as a cold front moves 
southeast across lake erie into tonight. as the cold front 
exits, high pressure 30.00 inches will briefly enter the region 
sunday and monday. a warm front will lift into the region 
monday and will be quickly followed by another cold front on
tuesday. a trough averaging 29.80 inches will linger across the 
eastern great lakes on wednesday.


lez061-190215-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
552 pm edt sat jul 18 2026

.tonight...west winds 15 to 20 knots becoming north. a chance of
showers and thunderstorms early. patchy smoke. waves 3 to 6 feet
subsiding to 2 to 3 feet. 
.sunday...north winds 10 to 15 knots becoming light and variable.
patchy smoke. waves 2 feet or less. 
.sunday night...west winds less than 10 knots becoming south.
patchy smoke in the evening. waves 1 foot or less. 
.monday...south winds 5 to 10 knots becoming west. waves 1 foot
or less. 
.monday night...southwest winds 10 knots or less becoming south
10 to 15 knots. waves 2 feet or less. 
.tuesday...south winds 15 to 20 knots becoming west 10 to
15 knots. showers with a chance of thunderstorms. waves 2 to
4 feet building to 3 to 5 feet. 
.wednesday...west winds 15 to 20 knots becoming northwest 10 to
15 knots. a chance of showers during the day. waves 2 to 4 feet
subsiding to 1 to 3 feet. 
.thursday...northwest winds 10 knots or less becoming southwest.
waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

fzus61 kcle 182152
glfle 
expires:202607190215;;198477

open lake forecast for lake erie
national weather service cleveland oh
552 pm edt sat jul 18 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...
low pressure 29.70 inches enters the region as a cold front moves 
southeast across lake erie into tonight. as the cold front 
exits, high pressure 30.00 inches will briefly enter the region 
sunday and monday. a warm front will lift into the region 
monday and will be quickly followed by another cold front on
tuesday. a trough averaging 29.80 inches will linger across the 
eastern great lakes on wednesday.


lez166>169-190215-
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-
552 pm edt sat jul 18 2026

...severe thunderstorm watch 492 in effect until 9 pm edt this
evening...

.tonight...northwest winds 15 to 20 knots becoming north. showers
likely with a chance of thunderstorms early. patchy smoke from
late evening on. waves 3 to 6 feet. 
.sunday...northeast winds 5 to 15 knots becoming northwest.
patchy smoke. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.sunday night...northwest winds 10 knots or less. patchy smoke in
the evening. waves 1 foot or less. 
.monday...southwest winds 10 knots or less. waves 1 foot or less.
.monday night...south winds 5 to 15 knots increasing to 15 to
20 knots. a chance of showers overnight. waves 1 foot or less
building to 3 to 5 feet. 
.tuesday...southwest winds 15 to 25 knots becoming northwest.
showers with a chance of thunderstorms. waves 4 to 7 feet
subsiding to 3 to 6 feet. waves occasionally around 9 feet. 
.wednesday...northwest winds 15 to 20 knots diminishing to 10 to
15 knots. waves 3 to 5 feet subsiding to 1 to 3 feet. 
.thursday...northwest winds 10 knots or less becoming south.
waves 2 feet or less. 

winds and waves higher in and near thunderstorms.

$$