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open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt sun mar 15 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 surface low over the mid-mississippi valley 
will track northeastward and deepen to 28.9 inches just to the west 
of the lake monday morning, before pushing northeastward across 
quebec through tuesday. this low will sweep a strong cold front 
across the lake monday afternoon, with a 30.4 inch high building 
across the great lakes and ohio valley tuesday. the high will then 
shift east of the lake wednesday and reach the east coast by 
wednesday evening. a 30.2 inch high will move into the great lakes 
region thursday.


loz062-152100-
lake ontario open waters from the niagara river to hamlin beach-
1003 am edt sun mar 15 2026

...gale watch in effect from monday afternoon through tuesday
morning...

.rest of today...east winds to 30 knots. snow likely late this
morning. waves 5 to 8 feet building to 6 to 9 feet. waves
occasionally around 11 feet. 
.tonight...southeast winds to 30 knots. a chance of showers late.
waves 5 to 8 feet. waves occasionally around 10 feet. 
.monday...southeast winds to 30 knots becoming southwest and
increasing to 35 knot gales in the afternoon. rain showers. waves
4 to 7 feet building to 9 to 12 feet. waves occasionally around
15 feet. 
.monday night...southwest gales to 35 knots becoming west. rain
showers with a chance of snow showers in the evening, then a
chance of snow showers overnight. waves 10 to 15 feet. waves
occasionally around 19 feet. 
.tuesday...west gales to 35 knots diminishing to 15 to 20 knots.
a chance of snow showers. waves 10 to 15 feet subsiding to 4 to
7 feet. waves occasionally around 19 feet. 
.wednesday...southwest winds 10 to 15 knots becoming south 15 to
20 knots. a chance of snow showers wednesday night. waves 1 to
3 feet. 
.thursday...south winds 10 to 15 knots becoming west. a chance of
rain and snow showers during the day, then a chance of rain
showers thursday night. waves 1 to 3 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
1003 am edt sun mar 15 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 surface low over the mid-mississippi valley 
will track northeastward and deepen to 28.9 inches just to the west 
of the lake monday morning, before pushing northeastward across 
quebec through tuesday. this low will sweep a strong cold front 
across the lake monday afternoon, with a 30.4 inch high building 
across the great lakes and ohio valley tuesday. the high will then 
shift east of the lake wednesday and reach the east coast by 
wednesday evening. a 30.2 inch high will move into the great lakes 
region thursday.


loz063>065-152100-
lake ontario open waters from hamlin beach to the saint lawrence
river-
1003 am edt sun mar 15 2026

...gale watch in effect from monday evening through tuesday
evening...

.rest of today...southeast winds 15 to 25 knots. snow likely late
this morning. waves 3 to 5 feet building to 5 to 8 feet. waves
occasionally around 10 feet. 
.tonight...southeast winds to 30 knots increasing to 35 knot
gales. a chance of rain showers late. waves 5 to 8 feet building
to 7 to 11 feet. waves occasionally around 14 feet. 
.monday...southeast gales to 35 knots becoming southwest and
diminishing to 30 knots in the afternoon. rain showers likely in
the morning, then rain showers, snow showers with a chance of
thunderstorms in the afternoon. waves 6 to 10 feet. waves
occasionally around 13 feet. 
.monday night...west winds to 30 knots increasing to 40 knot
gales. snow showers, rain showers with a chance of thunderstorms
in the evening, then lake effect snow showers overnight. waves
9 to 13 feet building to 13 to 17 feet. waves occasionally around
22 feet. 
.tuesday...west gales to 40 knots diminishing to 15 to 25 knots.
lake effect snow showers. waves 13 to 18 feet subsiding to 6 to
9 feet. waves occasionally around 23 feet. 
.wednesday...west winds 10 to 15 knots becoming south 15 to
20 knots. waves 3 to 5 feet. 
.thursday...south winds 15 to 20 knots becoming southwest. a
chance of rain showers. waves 3 to 5 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
1005 am edt sun mar 15 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 29.20 inches over the central plains this morning 
will deepen to 28.90 inches by monday morning as it lifts into the
northern great lakes. this will lift a warm front across lake erie
this morning followed by a strong cold front monday morning. a
trough averaging 29.80 inches will persist across the lake through
early tuesday before a ridge averaging 30.30 inches builds from 
the upper midwest late tuesday and tuesday night. the ridge will
exit slowly eastward from the lake erie region wednesday through 
thursday as another cold front crosses the lake.


lez061-168-169-152015-
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-
1005 am edt sun mar 15 2026

...gale watch in effect from monday morning through tuesday
morning...

.this afternoon...southeast winds 15 to 25 knots becoming south.
waves 2 to 4 feet building to 3 to 5 feet. 
.tonight...south winds to 30 knots. waves 3 to 6 feet building to
4 to 7 feet. waves occasionally around 9 feet. 
.monday...south winds to 30 knots becoming southwest and
increasing to 35 knot gales in the afternoon. rain showers in the
morning, then rain showers likely with a chance of snow showers
in the afternoon. waves 3 to 6 feet building to 10 to 13 feet.
waves occasionally around 16 feet. 
.monday night...west winds to 30 knots increasing to 35 knot
gales overnight. a chance of snow showers. waves 10 to 13 feet.
waves occasionally around 16 feet. 
.tuesday...west winds to 30 knots becoming southwest and
diminishing to 10 to 15 knots. a chance of snow showers. waves
9 to 12 feet subsiding to 3 to 5 feet. waves occasionally around
15 feet. 
.wednesday...southwest winds 10 to 15 knots becoming south. waves
1 to 3 feet. 
.thursday...south winds 5 to 15 knots becoming southwest. waves
2 feet or less. 

$$