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open lake forecast for lake ontario
national weather service buffalo ny
1003 pm edt mon jul 27 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 29.5 inch low over the western central great lakes 
this evening will strengthen to 29.3 inches while moving southeast 
into the lower great lakes tonight and tuesday. a cold front 
associated with this low will swing across the lake late tuesday and 
tuesday night. the low will then weaken to 29.6 inches while 
drifting east into new england by wednesday, before entering the 
northern atlantic thursday and friday. meanwhile a 30.0 inch high 
will slide across the great lakes thursday and friday.


loz062-280900-
lake ontario open waters from the niagara river to hamlin beach-
1003 pm edt mon jul 27 2026

.rest of tonight...south winds 5 to 15 knots. a chance of showers
and thunderstorms late this evening, then showers with a chance
of thunderstorms after midnight. waves 1 to 2 feet. 
.tuesday...southeast winds 10 to 15 knots becoming north 15 to
20 knots. showers with a chance of thunderstorms through early
afternoon, then a chance of showers and thunderstorms late. waves
1 to 3 feet building to 2 to 4 feet. 
.tuesday night...north winds 15 to 25 knots. showers likely with
a chance of thunderstorms in the evening, then showers likely
overnight. waves 2 to 4 feet building to 3 to 6 feet. 
.wednesday...north winds 15 to 25 knots. showers in the morning,
then showers with a chance of thunderstorms in the afternoon.
waves 3 to 6 feet. 
.wednesday night...north winds 15 to 20 knots. showers with a
chance of thunderstorms in the evening, then showers likely
overnight. waves 2 to 4 feet. 
.thursday...north winds 5 to 15 knots becoming northwest. a
chance of showers during the day. waves 1 to 3 feet subsiding to
1 foot or less. 
.friday...northwest winds less than 10 knots becoming southwest.
waves 1 foot or less. 
.saturday...south winds less than 10 knots. a chance of showers
saturday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1003 pm edt mon jul 27 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 29.5 inch low over the western central great lakes 
this evening will strengthen to 29.3 inches while moving southeast 
into the lower great lakes tonight and tuesday. a cold front 
associated with this low will swing across the lake late tuesday and 
tuesday night. the low will then weaken to 29.6 inches while 
drifting east into new england by wednesday, before entering the 
northern atlantic thursday and friday. meanwhile a 30.0 inch high 
will slide across the great lakes thursday and friday.


loz063>065-280900-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 pm edt mon jul 27 2026

.rest of tonight...southeast winds 5 to 15 knots becoming south.
a chance of showers and thunderstorms, then showers with a chance
of thunderstorms late. waves 2 feet or less. 
.tuesday...south winds 15 to 20 knots becoming northeast. showers
with a chance of thunderstorms. waves 1 to 3 feet building to
2 to 4 feet, then subsiding to 1 to 3 feet. 
.tuesday night...north winds 15 to 25 knots. showers with a
chance of thunderstorms. waves 2 to 4 feet building to 3 to
6 feet. 
.wednesday...north winds 15 to 25 knots. showers in the morning,
then showers with a chance of thunderstorms in the afternoon.
waves 3 to 6 feet. 
.wednesday night...north winds 15 to 20 knots. showers with a
chance of thunderstorms in the evening, then showers overnight.
waves 3 to 5 feet subsiding to 2 to 4 feet. 
.thursday...north winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of showers during the day. waves 2 to 4 feet
subsiding to 1 foot or less. 
.friday...north winds 10 knots or less becoming southwest. waves
1 foot or less. 
.saturday...south winds less than 10 knots. waves 1 foot or less.

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
936 pm edt mon jul 27 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 of 29.60 inches will move east across lake erie 
tonight, pulling a cold front south behind it on tuesday. a 
trough averaging 29.80 inches will linger over the lake into 
thursday before a ridge averaging 30.00 inches builds east across 
the region thursday and friday. the high will drift east on 
saturday as low pressure 29.90 inches moves east across the 
tennessee and ohio valleys.


lez164>168-280815-
the islands to vermilion oh beyond 5 nm off shoreline to us-
canadian border-
vermilion to avon point oh beyond 5 nm off shoreline to us-
canadian border-
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-
936 pm edt mon jul 27 2026

.rest of tonight...southwest winds 15 to 20 knots. showers likely
with a chance of thunderstorms, then a chance of showers and
thunderstorms late. waves 1 to 3 feet building to 3 to 5 feet. 
.tuesday...northwest winds 15 to 25 knots. a chance of showers
with a slight chance of thunderstorms early. a slight chance of
showers and thunderstorms late. waves 3 to 6 feet building to
4 to 7 feet. waves occasionally around 9 feet. 
.tuesday night...northwest winds 20 to 25 knots becoming north.
waves 4 to 7 feet. waves occasionally around 9 feet. 
.wednesday...north winds 15 to 25 knots becoming northwest. waves
4 to 7 feet subsiding to 3 to 6 feet. waves occasionally around
9 feet. 
.wednesday night...north winds 15 to 25 knots. waves 3 to 6 feet
subsiding to 2 to 4 feet. 
.thursday...north winds 5 to 15 knots. waves 1 to 3 feet. 
.friday...northwest winds less than 10 knots becoming south.
waves 1 foot or less. 
.saturday...south winds 10 knots or less becoming southeast. a
chance of showers saturday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
936 pm edt mon jul 27 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 of 29.60 inches will move east across lake erie 
tonight, pulling a cold front south behind it on tuesday. a 
trough averaging 29.80 inches will linger over the lake into 
thursday before a ridge averaging 30.00 inches builds east across 
the region thursday and friday. the high will drift east on 
saturday as low pressure 29.90 inches moves east across the 
tennessee and ohio valleys.


lez061-169-280815-
ripley to buffalo ny extending from 5nm off shoreline to us-
canadian border-
conneaut oh to ripley ny beyond 5 nm off shoreline to us-
canadian border-
936 pm edt mon jul 27 2026

.rest of tonight...south winds 10 to 15 knots becoming southwest
15 to 20 knots. showers and thunderstorms likely late this
evening, then showers with a chance of thunderstorms after
midnight. waves 1 to 3 feet. 
.tuesday...southwest winds 10 to 15 knots becoming northwest
15 to 20 knots. showers likely with a chance of thunderstorms
early, then a chance of showers with a slight chance of
thunderstorms from late morning on. waves 2 to 4 feet building to
3 to 5 feet. 
.tuesday night...northwest winds 15 to 25 knots becoming north.
showers likely with a chance of thunderstorms in the evening,
then a chance of showers overnight. waves 3 to 5 feet. 
.wednesday...north winds 15 to 25 knots becoming northwest. a
chance of showers. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.wednesday night...north winds 15 to 20 knots diminishing to
10 to 15 knots. a chance of showers in the evening. waves 2 to
4 feet subsiding to 1 to 3 feet. 
.thursday...north winds 5 to 15 knots. waves 2 feet or less. 
.friday...northwest winds less than 10 knots becoming south.
waves 1 foot or less. 
.saturday...south winds less than 10 knots becoming southeast. a
chance of showers saturday night. waves 1 foot or less. 

winds and waves higher in and near thunderstorms.

$$