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open lake forecast for lake ontario
national weather service buffalo ny
402 am est sun nov 30 2025

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 30.5 inch surface high will drift along the northeast 
coast to the canadian maritimes through tonight. a surface low will 
cut northeastward through the central great lakes sunday, slowly 
deepening from 29.6 inches sunday morning to 29.4 inches sunday 
night over western quebec. a cold front from this low will cross the 
lake late sunday night. a 30.4 inch surface high centered over the 
central plains will then build east across the great lakes monday, 
sliding quickly to new england on tuesday. a 29.7 inch surface low 
off the carolina coastline tuesday morning will deepen to 28.9 
inches over southern atlantic canada by early wednesday morning 
before going out to sea. a 30.2 inch surface high will build across 
the ohio valley and lower great lakes later wednesday into thursday 
morning before pushing off the coast. a large 29.2 inch surface low 
near hudson bay will push its cold front across the lake on thursday.


loz062-301600-
lake ontario open waters from the niagara river to hamlin beach-
402 am est sun nov 30 2025

...gale warning in effect from 10 am est this morning through
late tonight...

.today...south winds to 30 knots becoming southwest and
increasing to 35 knot gales this afternoon. snow showers early,
then rain and snow showers late this morning. rain showers this
afternoon. waves 3 to 6 feet building to 10 to 13 feet. waves
occasionally around 16 feet. 
.tonight...west gales to 35 knots becoming northwest and
diminishing to 30 knots after midnight. a chance of rain and snow
showers through the early overnight. waves 11 to 15 feet
subsiding to 6 to 9 feet. waves occasionally around 19 feet. 
.monday...northwest winds 15 to 20 knots becoming southwest 5 to
15 knots. waves 4 to 7 feet subsiding to 1 foot or less. waves
occasionally around 9 feet. 
.monday night...southwest winds 5 to 15 knots becoming south.
snow showers overnight. waves 2 feet or less. 
.tuesday...southwest winds 5 to 15 knots becoming west. snow
showers during the day. waves 2 feet or less. 
.wednesday...southwest winds 15 to 25 knots becoming west to
30 knots. snow showers likely wednesday night. waves 2 to 4 feet
building to 6 to 9 feet. waves occasionally around 11 feet. 
.thursday...west winds to 30 knots diminishing to 10 to 15 knots.
snow showers likely during the day, then a chance of snow showers
thursday night. waves 6 to 9 feet subsiding to 3 to 5 feet. waves
occasionally around 11 feet. 

$$

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open lake forecast for lake huron
national weather service detroit/pontiac mi
322 am est sun nov 30 2025

for waters beyond five nautical miles off shore on lake huron

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, 29.70 inches, will lift northeast over
central lake huron sunday morning before departing for ontario by
afternoon. a period of northwest gales behind the low is expected
over much of lake huron late in the afternoon and early evening
hours. a gale warning is in effect for much of lake huron during
this time.


lhz362-363-462>464-301630-
lake huron from presque isle light to sturgeon point mi beyond
5nm off shore-
lake huron from sturgeon point to alabaster mi beyond 5nm off
shore-
lake huron from port austin to harbor beach beyond 5nm off shore-
lake huron from harbor beach to port sanilac beyond 5nm off shore-
lake huron from port sanilac to port huron beyond 5nm off shore-
322 am est sun nov 30 2025

...gale warning in effect from 2 pm est this afternoon through
this evening...

.today...east winds 15 to 20 knots becoming northeast 10 to
15 knots late in the morning...then becoming north 15 to 20 knots
early in the afternoon becoming west to 30 knots with gusts to
35 knot gales late in the afternoon. rain and snow in the
morning...then snow and rain in the afternoon. waves 6 to 9 feet.
waves occasionally around 12 feet. 
.tonight...northwest winds to 30 knots with gusts to 35 knot
gales becoming west 15 to 20 knots. a chance of snow in the
evening. waves 12 to 16 feet subsiding to 8 to 12 feet early in
the morning. waves occasionally around 20 feet. 
.monday...west winds 10 to 15 knots becoming southwest 15 to
20 knots early in the afternoon. waves 5 to 7 feet subsiding to
3 to 5 feet in the late morning and afternoon. waves occasionally
around 10 feet. 
.monday night...southwest winds 15 to 20 knots. snow likely.
waves 5 to 7 feet. waves occasionally around 10 feet. 
.tuesday...west winds 10 to 15 knots increasing to 15 to 20 knots
late in the evening. waves 3 to 5 feet building to 4 to 6 feet
late in the evening. waves occasionally around 8 feet. 
.wednesday...southwest winds 20 to 25 knots with gusts to around
30 knots increasing to 30 knots early in the evening...then
decreasing to 20 to 25 knots in the late evening and early
morning. a chance of snow early in the morning...then snow likely
until early morning. waves 8 to 12 feet. waves occasionally
around 15 feet. 
.thursday...west winds to 30 knots decreasing to 20 to 25 knots
with gusts to around 30 knots. a chance of snow. waves 6 to
9 feet. waves occasionally around 12 feet. 


$$