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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt tue may 5 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 29.1 inch low over hudson bay today will weaken to 
29.3 inches as it moves to northern quebec through wednesday. a 
trailing wavy cold front will slowly cross the lake late this 
afternoon, then drift across new england wednesday and out to sea 
thursday. a 30.1 inch high over the tennessee and ohio valleys 
thursday night will slide to the mid-atlantic coastline friday. a 
29.6 inch low will track across the lake early saturday, followed by 
a 29.7 inch low that will track near or just south of the lake for 
later sunday.


loz062-052100-
lake ontario open waters from the niagara river to hamlin beach-
1002 am edt tue may 5 2026

.rest of today...southwest winds 15 to 20 knots becoming west. a
chance of showers early this afternoon. showers likely late.
waves 2 to 3 feet. 
.tonight...west winds 15 to 20 knots becoming southeast and
diminishing to 5 to 10 knots. showers. waves 1 to 3 feet
subsiding to 1 foot or less. 
.wednesday...east winds 5 to 10 knots becoming south. showers
likely. waves 1 foot or less. 
.wednesday night...west winds 5 to 10 knots. waves 1 foot or
less. 
.thursday...west winds 5 to 10 knots. waves 2 feet or less. 
.friday...west winds 5 to 15 knots becoming southwest. a chance
of showers friday night. waves 1 to 2 feet. 
.saturday...southwest winds 5 to 15 knots. a chance of showers.
waves 1 to 2 feet. 

$$

fzus61 kbuf 051402
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open lake forecast for lake ontario
national weather service buffalo ny
1002 am edt tue may 5 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 29.1 inch low over hudson bay today will weaken to 
29.3 inches as it moves to northern quebec through wednesday. a 
trailing wavy cold front will slowly cross the lake late this 
afternoon, then drift across new england wednesday and out to sea 
thursday. a 30.1 inch high over the tennessee and ohio valleys 
thursday night will slide to the mid-atlantic coastline friday. a 
29.6 inch low will track across the lake early saturday, followed by 
a 29.7 inch low that will track near or just south of the lake for 
later sunday.


loz063>065-052100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1002 am edt tue may 5 2026

.rest of today...southwest winds 15 to 20 knots becoming west. a
chance of showers late this morning, then a chance of showers and
thunderstorms early this afternoon. showers likely with a chance
of thunderstorms late. waves 2 to 4 feet. 
.tonight...west winds 15 to 20 knots becoming southeast and
diminishing to 10 knots or less after midnight. showers with a
chance of thunderstorms early, then showers from late evening on.
waves 1 to 3 feet. 
.wednesday...east winds 5 to 10 knots becoming northwest.
showers. waves 1 foot or less. 
.wednesday night...west winds 5 to 10 knots. a chance of showers
in the evening. waves 2 feet or less. 
.thursday...west winds 5 to 15 knots. waves 1 to 2 feet. 
.friday...west winds 5 to 15 knots becoming south. a chance of
showers friday night. waves 1 to 3 feet. 
.saturday...south winds 5 to 15 knots becoming southwest. showers
likely. waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
344 pm edt tue may 5 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 cold front and low pressure 29.70 inches will move east of lake
erie tonight, allowing high pressure 30.10 inches to slowly 
expand east across the region wednesday through early friday. low
pressure 29.70 inches will move east across the great lakes friday
into saturday, pushing a cold front east across the lake. low 
pressure 29.80 inches accompanied by a cold front will move east 
across lake erie on sunday.


lez061-167>169-060215-
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-
344 pm edt tue may 5 2026

.tonight...west winds 5 to 10 knots becoming north. rain with a
slight chance of thunderstorms early, then rain from late evening
on. waves 2 to 4 feet subsiding to 1 to 3 feet. 
.wednesday...north winds 5 to 10 knots becoming west. rain early,
then a slight chance of showers late in the morning. a slight
chance of showers late. waves 1 foot or less. 
.wednesday night...southwest winds 5 to 10 knots becoming
northwest. waves 1 foot or less. 
.thursday...north winds 5 to 10 knots becoming west. waves 1 foot
or less. 
.thursday night...west winds 5 to 10 knots. waves 1 to 2 feet. 
.friday...southwest winds 5 to 10 knots. a chance of showers
during the day, then showers likely friday night. waves 1 to
2 feet. 
.saturday...southwest winds 5 to 10 knots. a chance of showers
saturday night. waves 1 to 2 feet. 
.sunday...southwest winds 5 to 10 knots becoming north. showers
likely during the day, then a chance of showers sunday night.
waves 1 to 2 feet. 

winds and waves higher in and near thunderstorms.

$$