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open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat jun 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...an unseasonably strong 29.2 inch low will linger over 
the canadian maritimes through this evening before exiting eastward 
over the atlantic. a weak ridge of high pressure averaging 29.9 
inches will then build over the great lakes tonight through sunday. 
a 29.7 inch low is then forecast to move south of the lower great 
lakes monday and monday night, before moving off the new england 
coast by tuesday. a broad area of high pressure averaging 30.1 
inches will advance over the eastern great lakes region wednesday 
and thursday of next week.


loz062-201500-
lake ontario open waters from the niagara river to hamlin beach-
402 am edt sat jun 20 2026

.today...west winds 10 to 15 knots. waves 2 to 4 feet subsiding
to 1 to 3 feet. 
.tonight...west winds 5 to 10 knots. a chance of showers late.
waves 1 to 3 feet subsiding to 1 foot or less. 
.sunday...west winds 10 knots or less becoming southwest. waves
1 foot or less. 
.sunday night...southwest winds less than 10 knots becoming
southeast. a chance of showers overnight. waves 1 foot or less. 
.monday...east winds 5 to 15 knots becoming northwest. showers
likely during the day, then a chance of showers monday night.
waves 2 feet or less. 
.tuesday...northwest winds 5 to 10 knots. waves 2 feet or less. 
.wednesday...west winds less than 10 knots becoming southeast. a
chance of showers wednesday night. waves 1 foot or less. 

$$

fzus61 kbuf 200802
glflo 
expires:202606201500;;059405

open lake forecast for lake ontario
national weather service buffalo ny
402 am edt sat jun 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...an unseasonably strong 29.2 inch low will linger over 
the canadian maritimes through this evening before exiting eastward 
over the atlantic. a weak ridge of high pressure averaging 29.9 
inches will then build over the great lakes tonight through sunday. 
a 29.7 inch low is then forecast to move south of the lower great 
lakes monday and monday night, before moving off the new england 
coast by tuesday. a broad area of high pressure averaging 30.1 
inches will advance over the eastern great lakes region wednesday 
and thursday of next week.


loz063>065-201500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
402 am edt sat jun 20 2026

.today...west winds 15 to 20 knots. waves 3 to 6 feet. 
.tonight...west winds 5 to 15 knots. waves 2 to 4 feet subsiding
to 1 to 3 feet. 
.sunday...west winds 5 to 10 knots. waves 2 feet or less. 
.sunday night...west winds 10 knots or less becoming south. a
chance of showers overnight. waves 2 feet or less. 
.monday...southeast winds 5 to 10 knots becoming northwest.
showers likely. waves 2 feet or less. 
.tuesday...northwest winds 5 to 15 knots becoming west. waves
2 feet or less. 
.wednesday...west winds 10 knots or less becoming south. a chance
of showers wednesday night. waves 1 foot or less. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
355 am edt sat jun 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...
weak low pressure 29.90 inches crosses lake erie this afternoon, 
dragging a cold front across the lake. high pressure 30.00 inches briefly
builds over the lake tonight and sunday before another low 
pressure system 29.60 inches moves northeast into the ohio valley 
sunday night and into the mid atlantic by monday afternoon. this 
will drag another cold front across the lake monday. a ridge 
averaging 30.10 inches builds over the region tuesday through 
wednesday.


lez061-168-169-201415-
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-
355 am edt sat jun 20 2026

.today...west winds 5 to 10 knots. isolated showers. waves 1 to
2 feet. 
.tonight...west winds 5 to 10 knots. a slight chance of showers
and thunderstorms through the early overnight. waves 1 to 2 feet.
.sunday...northwest winds 10 knots or less becoming southwest.
waves 1 foot or less. 
.sunday night...southwest winds 10 knots or less becoming east
and increasing to 15 to 20 knots overnight. a chance of rain in
the evening, then rain likely overnight. waves 2 feet or less. 
.monday...east winds 15 to 20 knots becoming north 10 to
15 knots. showers likely during the day. waves 3 to 5 feet
subsiding to 1 to 3 feet. 
.tuesday...northwest winds 5 to 10 knots becoming north. waves
2 feet or less. 
.wednesday...northwest winds 10 knots or less becoming south. a
chance of showers and thunderstorms wednesday night. waves 1 foot
or less. 

winds and waves higher in and near thunderstorms.

$$