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open lake forecast for lake ontario
national weather service buffalo ny
403 am edt tue mar 17 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 central michigan this late 
morning will track northeastward west of the lake this 
afternoon, before pushing northeastward across quebec through 
tuesday. this low will sweep a strong cold front across the lake 
late this 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.


loz062-171500-
lake ontario open waters from the niagara river to hamlin beach-
403 am edt tue mar 17 2026

...gale warning in effect until 11 am edt this morning...

.today...west gales to 40 knots diminishing to 30 knots. lake
effect snow showers likely this morning, then a chance of snow
showers this afternoon. waves 12 to 17 feet subsiding to 8 to
11 feet. waves occasionally around 22 feet. 
.tonight...west winds 15 to 25 knots diminishing to 10 to
15 knots. snow showers likely early. waves 5 to 9 feet subsiding
to 3 to 6 feet. waves occasionally around 11 feet. 
.wednesday...southwest winds 10 to 15 knots becoming south. waves
1 to 3 feet. 
.wednesday night...south winds 10 to 15 knots increasing to 15 to
20 knots. a chance of snow showers overnight. waves 1 to 3 feet. 
.thursday...southwest 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...southwest winds 10 to 15 knots becoming northeast 15 to
20 knots. a chance of rain and snow showers. waves 1 to 2 feet
building to 2 to 4 feet. 
.saturday...northeast winds 15 to 25 knots becoming north. a
chance of rain and snow showers. waves 3 to 5 feet building to
5 to 8 feet. waves occasionally around 10 feet. 

$$

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open lake forecast for lake ontario
national weather service buffalo ny
403 am edt tue mar 17 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 central michigan this late 
morning will track northeastward west of the lake this 
afternoon, before pushing northeastward across quebec through 
tuesday. this low will sweep a strong cold front across the lake 
late this 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>065-171500-
lake ontario open waters from hamlin beach to the saint lawrence
river-
403 am edt tue mar 17 2026

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

.today...west gales to 40 knots diminishing to 35 knots. lake
effect snow showers. visibility one quarter mile or less at times
through early afternoon. waves 15 to 20 feet subsiding to 12 to
16 feet. waves occasionally around 26 feet. 
.tonight...west winds to 30 knots becoming northwest 15 to
25 knots. lake effect snow showers in the evening, then a chance
of lake effect snow showers after midnight. waves 10 to 14 feet
subsiding to 4 to 7 feet. waves occasionally around 18 feet. 
.wednesday...northwest winds 5 to 10 knots becoming south. lake
effect snow showers likely in the morning, then a chance of snow
showers in the afternoon. waves 3 to 5 feet subsiding to 1 to
3 feet. 
.wednesday night...southeast winds 10 to 15 knots becoming south
15 to 20 knots. waves 2 feet or less building to 3 to 5 feet. 
.thursday...south winds 15 to 20 knots becoming west 10 to
15 knots. a chance of snow showers during the day, then a chance
of rain showers thursday night. waves 3 to 5 feet subsiding to
2 feet or less. 
.friday...southwest winds around 10 knots becoming north and
increasing to 15 to 20 knots. a chance of rain and snow showers.
waves 2 feet or less building to 3 to 5 feet. 
.saturday...northeast winds 15 to 25 knots becoming south to
30 knots. a chance of rain and snow showers. waves 3 to 6 feet
building to 5 to 8 feet. waves occasionally around 10 feet. 

$$

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open lake forecast for lake erie
national weather service cleveland oh
740 am edt tue mar 17 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 trough averaging 29.50 inches will linger over the area this
morning before high pressure 30.40 inches pushes north across the
great lakes region late this afternoon into tonight. this high
will slow drift east on wednesday, allowing for a warm front to
lift north late wednesday. high pressure 30.10 inches should
persist for much of the remainder of the week before a weak low
pressure 29.80 inches moves east through the region this weekend.


lez061-168-169-172015-
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-
740 am edt tue mar 17 2026

...gale warning in effect until 8 am edt this morning...

.rest of today...west winds to 30 knots. a chance of snow. waves
10 to 14 feet subsiding to 5 to 8 feet. waves occasionally around
18 feet. 
.tonight...west winds 15 to 20 knots diminishing to 5 to
15 knots. a chance of snow. waves 3 to 6 feet subsiding to 2 to
4 feet. 
.wednesday...southwest winds 5 to 15 knots becoming south. a
chance of snow in the morning. waves 1 to 3 feet. 
.wednesday night...south winds 10 to 15 knots becoming southwest.
waves 1 to 3 feet. 
.thursday...southwest winds 5 to 10 knots. a chance of rain
during the day. waves 2 feet or less. 
.friday...southwest winds 5 to 10 knots becoming north. a chance
of rain. waves 1 to 3 feet. 
.saturday...northeast winds 10 to 15 knots becoming southwest.
waves 1 to 3 feet building to 3 to 5 feet. 

$$