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open lake forecast for lake ontario
national weather service buffalo ny
403 pm 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.


loz062-160300-
lake ontario open waters from the niagara river to hamlin beach-
403 pm edt sun mar 15 2026

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

.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. a chance of rain
showers early, then rain showers from late morning on. 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. snow
and rain showers likely in the evening, then snow showers likely
overnight. waves 10 to 15 feet. waves occasionally around
19 feet. 
.tuesday...west gales to 35 knots. waves 10 to 15 feet subsiding
to 8 to 11 feet. waves occasionally around 19 feet. 
.tuesday night...west winds to 30 knots diminishing to 10 to
15 knots. waves 6 to 10 feet subsiding to 3 to 5 feet. waves
occasionally around 13 feet. 
.wednesday...southwest winds 10 to 15 knots becoming south 15 to
20 knots. 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. 
.friday...west winds 10 to 15 knots increasing to 15 to 25 knots.
a chance of rain showers. waves 1 to 3 feet building to 3 to
6 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
403 pm 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>065-160300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 pm edt sun mar 15 2026

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

.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. a chance of rain
showers late in the morning. rain 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. rain showers, snow showers with a chance of thunderstorms
in the evening, then 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 35 knots. a
chance of snow showers. waves 13 to 18 feet subsiding to 12 to
16 feet. waves occasionally around 23 feet. 
.tuesday night...west gales to 35 knots becoming northwest and
diminishing to 15 to 25 knots. lake effect snow showers likely.
waves 11 to 15 feet subsiding to 4 to 7 feet. waves occasionally
around 19 feet. 
.wednesday...west winds 5 to 15 knots becoming south 15 to
20 knots. waves 3 to 5 feet. 
.thursday...south winds 15 to 20 knots becoming west. a chance of
rain showers. waves 3 to 5 feet subsiding to 2 to 4 feet. 
.friday...west winds 15 to 25 knots becoming south. a chance of
rain showers during the day, then rain showers likely friday
night. waves 2 to 4 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
558 pm 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...
a potent low deepens to 29.00 inches as it moves northeastward 
from northern illinois to near northern lake huron by midday 
monday. this will allow a strong cold front to sweep eastward 
across lake erie monday morning. during monday afternoon through 
monday night, a trough averaging 29.90 inches lingers over lake 
erie as the low moves north-northeastward toward northern quebec 
and deepens further to 28.50 inches. on tuesday through tuesday 
night, a ridge averaging 30.30 inches should build from the upper 
midwest. the ridge should exit slowly eastward from the region 
wednesday through wednesday night and allow a warm front to sweep 
northward across lake erie. on thursday, a very weak cold front 
should sweep eastward across lake erie and be followed by a ridge, 
averaging 30.10 inches, building from the west. on friday, the 
ridge should exit eastward and allow another warm front to sweep 
northward across lake erie. 


lez061-168-169-160230-
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-
558 pm edt sun mar 15 2026

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

.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. a chance of rain
showers through early afternoon, then a chance of snow and rain
showers late. waves 3 to 6 feet building to 10 to 14 feet. waves
occasionally around 18 feet. 
.monday night...west winds to 30 knots increasing to 35 knot
gales. snow showers likely. waves 10 to 14 feet. waves
occasionally around 18 feet. 
.tuesday...west winds to 30 knots diminishing to 15 to 25 knots.
a chance of snow showers. waves 9 to 12 feet subsiding to 5 to
8 feet. waves occasionally around 15 feet. 
.tuesday night...west winds 15 to 20 knots diminishing to 5 to
15 knots. waves 3 to 6 feet subsiding to 2 to 4 feet. 
.wednesday...southwest winds 5 to 15 knots becoming south. waves
1 to 3 feet. 
.thursday...south winds 5 to 15 knots becoming west less than
10 knots. a chance of rain during the day. waves 2 feet or less. 
.friday...southwest winds 5 to 15 knots increasing to 15 to
20 knots. a chance of rain. waves 2 feet or less building to 3 to
5 feet. 

winds and waves higher in and near thunderstorms.

$$