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open lake forecast for lake ontario
national weather service buffalo ny
435 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-
435 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.

$$