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open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt fri mar 13 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 29.2 inch low over northern lower michigan will move 
to the ottawa valley tonight while weakening to 29.5 inches. this 
low will continue east to the canadian maritimes saturday as a 30.3 
inch high builds into the lower great lakes. a 30.3 inch high will 
then ridge across the lake saturday night, before moving east of the 
lake sunday. meanwhile, a 29.5 inch surface low over the mid 
mississippi valley sunday morning will track northeastward and 
deepen to 28.9 inches just to the west of the lake monday morning, 
before pushing northeastward across quebec through the remainder of 
monday and tuesday. this low will sweep a strong cold front across 
the lake monday afternoon, with a 30.3 inch high then 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.


loz062-140300-
lake ontario open waters from the niagara river to hamlin beach-
403 pm edt fri mar 13 2026

...gale warning in effect through saturday morning...

.tonight...south winds to 30 knots becoming west and increasing
to 40 knot gales after midnight. rain and snow showers. waves
4 to 7 feet building to 12 to 16 feet. waves occasionally around
20 feet. 
.saturday...west gales to 35 knots diminishing to 30 knots. snow
and rain showers likely early. waves 12 to 16 feet subsiding to
7 to 10 feet. waves occasionally around 20 feet. 
.saturday night...northwest winds 15 to 25 knots becoming east
and diminishing to 10 to 15 knots. a chance of snow overnight.
waves 5 to 8 feet subsiding to 1 foot or less. waves occasionally
around 10 feet. 
.sunday...east winds 15 to 25 knots. snow likely in the morning,
then rain and snow likely in the afternoon. waves 1 to 3 feet
building to 5 to 8 feet. waves occasionally around 10 feet. 
.sunday night...southeast winds to 30 knots becoming south. a
chance of showers overnight. waves 5 to 8 feet. waves
occasionally around 10 feet. 
.monday...southeast winds to 30 knots becoming west and
increasing to 40 knot gales. rain and snow showers. waves 5 to
8 feet building to 11 to 16 feet. waves occasionally around
20 feet. 
.tuesday...west gales to 35 knots diminishing to 15 to 25 knots.
waves 12 to 16 feet subsiding to 6 to 9 feet. waves occasionally
around 20 feet. 
.wednesday...west winds 15 to 20 knots becoming south. a chance
of snow and rain showers wednesday night. waves 3 to 6 feet
subsiding to 1 to 3 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
403 pm edt fri mar 13 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 29.2 inch low over northern lower michigan will move 
to the ottawa valley tonight while weakening to 29.5 inches. this 
low will continue east to the canadian maritimes saturday as a 30.3 
inch high builds into the lower great lakes. a 30.3 inch high will 
then ridge across the lake saturday night, before moving east of the 
lake sunday. meanwhile, a 29.5 inch surface low over the mid 
mississippi valley sunday morning will track northeastward and 
deepen to 28.9 inches just to the west of the lake monday morning, 
before pushing northeastward across quebec through the remainder of 
monday and tuesday. this low will sweep a strong cold front across 
the lake monday afternoon, with a 30.3 inch high then 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.


loz063>065-140300-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 pm edt fri mar 13 2026

...gale warning in effect through saturday afternoon...

.tonight...south winds to 30 knots becoming southwest and
increasing to 35 knot gales after midnight. rain and snow early,
then snow and rain showers from late evening on. waves 5 to
8 feet building to 12 to 16 feet. waves occasionally around
20 feet. 
.saturday...west gales to 40 knots diminishing to 35 knots. snow
showers likely early, then a chance of snow showers late in the
morning. waves 13 to 18 feet subsiding to 11 to 15 feet. waves
occasionally around 23 feet. 
.saturday night...west winds to 30 knots becoming northeast and
diminishing to 5 to 10 knots overnight. waves 10 to 14 feet
subsiding to 1 to 3 feet. waves occasionally around 18 feet. 
.sunday...east winds 10 to 15 knots becoming southeast and
increasing to 15 to 25 knots. a chance of snow. waves 2 feet or
less building to 5 to 8 feet. waves occasionally around 10 feet. 
.sunday night...southeast winds to 30 knots increasing to 35 knot
gales. waves 5 to 9 feet building to 7 to 10 feet. waves
occasionally around 13 feet. 
.monday...southeast gales to 35 knots becoming southwest to
40 knots. rain showers during the day, then snow and rain showers
monday night. waves 6 to 10 feet building to 13 to 17 feet. waves
occasionally around 22 feet. 
.tuesday...west gales to 40 knots diminishing to 30 knots. a
chance of snow showers. waves 12 to 17 feet subsiding to 10 to
13 feet. waves occasionally around 22 feet. 
.wednesday...west winds 15 to 20 knots becoming south. a chance
of snow showers wednesday night. waves 5 to 8 feet subsiding to
3 to 5 feet. waves occasionally around 10 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
354 pm edt fri mar 13 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 29.30 inches north of lake erie will push northeast
and extend a cold front through the area tonight. high pressure
30.30 inches will enter for saturday. low pressure 29.20 inches
will enter the central united states on saturday night and lift a
warm front toward the lake. this low will follow the front into
the great lakes region on sunday, extending a cold front across
the area on monday. high pressure 30.40 inches will build into the
region on tuesday.


lez061-168-169-140215-
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-
354 pm edt fri mar 13 2026

...gale warning in effect through late tonight...

.tonight...southwest gales to 35 knots becoming west. snow likely
early, then a chance of snow from late evening on. waves 10 to
14 feet. waves occasionally around 18 feet. 
.saturday...west winds to 30 knots diminishing to 15 to 20 knots.
a chance of snow early. waves 7 to 10 feet subsiding to 2 to
4 feet. waves occasionally around 13 feet. 
.saturday night...southwest winds 10 to 15 knots becoming east. a
chance of snow overnight. waves 2 feet or less. 
.sunday...east winds 10 to 15 knots becoming southeast and
increasing to 15 to 25 knots. a chance of snow in the morning.
waves 2 to 4 feet. 
.sunday night...south winds to 30 knots. a chance of rain
overnight. waves 3 to 6 feet building to 4 to 7 feet. waves
occasionally around 9 feet. 
.monday...south winds to 30 knots becoming west and increasing to
35 knot gales. rain with snow likely during the day, then a
chance of snow monday night. waves 5 to 8 feet building to 8 to
12 feet. waves occasionally around 15 feet. 
.tuesday...west winds to 30 knots diminishing to 15 to 25 knots.
a chance of snow during the day. waves 9 to 12 feet subsiding to
3 to 6 feet. waves occasionally around 15 feet. 
.wednesday...southwest winds 5 to 15 knots becoming south. waves
2 to 4 feet subsiding to 1 foot or less. 

$$