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open lake forecast for lake ontario
national weather service buffalo ny
403 am edt mon mar 16 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 surface low over southern michigan will 
track northeastward west of the lake this 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. a 29.8 inch low will move from james 
bay to the canadian maritimes friday. this may result in a cold 
front crossing the lake through friday.


loz062-161500-
lake ontario open waters from the niagara river to hamlin beach-
403 am edt mon mar 16 2026

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

.today...southeast winds to 30 knots becoming southwest. a chance
of rain showers late this morning. rain showers likely early this
afternoon, then rain and snow showers likely late. waves 5 to
8 feet building to 6 to 9 feet. waves occasionally around
11 feet. 
.tonight...southwest gales to 35 knots becoming west. snow
showers in the evening, then a chance of snow showers after
midnight. waves 8 to 11 feet building to 12 to 16 feet. waves
occasionally around 20 feet. 
.tuesday...west gales to 40 knots diminishing to 30 knots. a
chance of snow showers. waves 12 to 16 feet subsiding to 10 to
14 feet. waves occasionally around 20 feet. 
.tuesday night...west winds to 30 knots diminishing to 10 to
15 knots. a chance of snow showers in the evening. waves 7 to
10 feet subsiding to 2 to 4 feet. waves occasionally around
13 feet. 
.wednesday...southwest winds 10 to 15 knots becoming south. a
chance of snow showers wednesday night. waves 1 to 3 feet. 
.thursday...south winds 10 to 15 knots becoming west 15 to
20 knots. a chance of rain showers. waves 1 to 3 feet. 
.friday...west winds 15 to 20 knots becoming northeast. a chance
of rain showers during the day, then a chance of rain and snow
showers friday night. waves 2 to 3 feet building to 3 to 5 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
403 am edt mon mar 16 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 surface low over southern michigan will 
track northeastward west of the lake this 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. a 29.8 inch low will move from james 
bay to the canadian maritimes friday. this may result in a cold 
front crossing the lake through friday.


loz063>065-161500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 am edt mon mar 16 2026

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

.today...southeast gales to 35 knots becoming southwest and
diminishing to 30 knots this afternoon. a chance of rain showers
early. rain showers early this afternoon, then rain showers with
a chance of thunderstorms late. waves 7 to 11 feet subsiding to
5 to 8 feet. waves occasionally around 14 feet. 
.tonight...west winds to 30 knots becoming southwest and
increasing to 40 knot gales. rain showers, snow showers with a
chance of thunderstorms in the evening, then snow showers likely
after midnight. visibility one quarter mile or less at times
late. waves 6 to 9 feet building to 13 to 17 feet. waves
occasionally around 22 feet. 
.tuesday...west gales to 40 knots diminishing to 35 knots.
visibility one quarter mile or less at times. lake effect snow
showers. waves 15 to 20 feet subsiding to 12 to 16 feet. waves
occasionally around 26 feet. 
.tuesday night...west winds to 30 knots becoming northwest and
diminishing to 15 to 20 knots. lake effect snow showers. waves
10 to 14 feet subsiding to 4 to 7 feet. waves occasionally around
18 feet. 
.wednesday...west winds 5 to 15 knots becoming south 15 to
20 knots. a chance of snow showers during the day. waves 2 to
4 feet. 
.thursday...south winds 15 to 20 knots becoming west. a chance of
rain showers. waves 2 to 4 feet building to 3 to 5 feet. 
.friday...west winds 15 to 25 knots becoming northeast. a chance
of rain showers during the day, then a chance of rain and snow
showers friday night. waves 3 to 5 feet building to 3 to 6 feet. 

winds and waves higher in and near thunderstorms.

$$

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open lake forecast for lake erie
national weather service cleveland oh
347 am edt mon mar 16 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 
into the northern great lakes today. this will allow a strong 
cold front to sweep eastward across lake erie this morning. 
this afternoon through tonight, 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.


lez168-161430-
geneva-on-the-lake to conneaut oh beyond 5 nm off shoreline to us-
canadian border-
347 am edt mon mar 16 2026

...gale warning in effect from 8 am edt this morning through
tuesday morning...

.today...south winds to 30 knots becoming southwest. a chance of
rain this morning, then a slight chance of rain and snow early
this afternoon. a chance of snow late. waves 4 to 7 feet building
to 10 to 13 feet. waves occasionally around 16 feet. 
.tonight...west winds to 30 knots increasing to 35 knot gales
after midnight. snow likely through the early overnight, then a
chance of snow late. waves 10 to 14 feet. waves occasionally
around 18 feet. 
.tuesday...west winds to 30 knots diminishing to 15 to 20 knots.
a chance of snow. waves 9 to 12 feet subsiding to 4 to 6 feet.
waves occasionally around 15 feet. 
.tuesday night...west winds 10 to 15 knots. a chance of snow.
waves 3 to 5 feet subsiding to 2 to 3 feet. 
.wednesday...southwest winds 10 to 15 knots becoming south. waves
1 to 3 feet. 
.thursday...south winds 5 to 10 knots becoming west. a chance of
rain during the day. waves 2 feet or less. 
.friday...west winds 5 to 15 knots becoming east. a chance of
rain and snow friday night. waves 1 to 2 feet building to 3 to
5 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
347 am edt mon mar 16 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 
into the northern great lakes today. this will allow a strong 
cold front to sweep eastward across lake erie this morning. 
this afternoon through tonight, 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.


lez061-169-161430-
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-
347 am edt mon mar 16 2026

...gale warning in effect from noon edt today through tuesday
morning...

.today...south winds to 30 knots becoming southwest. a chance of
rain through early afternoon, then a chance of snow and rain
late. waves in ice free areas 5 to 8 feet building to 10 to
14 feet. waves in ice free areas occasionally around 18 feet. 
.tonight...west gales to 35 knots increasing to 40 knots. snow
likely through the early overnight, then a chance of snow late.
waves 10 to 15 feet. waves occasionally around 19 feet. 
.tuesday...west gales to 35 knots diminishing to 15 to 25 knots.
a chance of snow. waves 10 to 13 feet subsiding to 5 to 8 feet.
waves occasionally around 16 feet. 
.tuesday night...west winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of snow. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.wednesday...southwest winds 5 to 15 knots becoming south. waves
1 to 3 feet. 
.thursday...south winds 5 to 10 knots becoming southwest. a
chance of rain during the day. waves 2 feet or less. 
.friday...west winds 5 to 15 knots becoming northeast. a chance
of rain friday night. waves 2 feet or less building to 2 to
4 feet. 

wave heights are for ice free areas.

$$