dusting this thread off after a while...
Northern VT is a nexus of weather patterns- lake effect, clippers, and synoptic coastal events. Especially Jay-Smuggs-Stowe lie at this crossroad. The Spine of the Greens form a virtual wall- with just enough orographics to squeeze out 300-350" a year.
Smuggs, until the past year or so, under-reported their snowfalls in my opinion. they wouldn't be as liberal in their reporting (possibly reporting a mean, instead of a max snowfall). their marketing isn't so much snow-based, but a niche for families (which they do quite well with). smuggs receives about 330" of snow a year- on par with Stowe, probably getting a bit more or a bit less depending on the year.
Northern VT's crossroad factor, coupled with higher elevations than the Eastern Townships definitely correlate to higher snowfall- its a fact that at 2500ft in the greens, there is less snow than 3500ft.
As for the argument that Jay doesn't stay open any longer than the Eastern Township resorts to the north- a few things to say here. Firstly, anyone who skis Jay knows the trail system their is garbage- trails cut erratically, and without much thought as to expsosure to prevailing winds (Winds notoriously BLAST Jay). Storms leave jay virtually barren because of winds, depositing snow in the glades they so love to market.
Lastly, look at the UVM Mount Mansfield Snow graph @ www.uvm/skivt-l
. It's a 50 year compilation of snow at "The Stake" on Mansfield at around 3700-3800 ft. It's not marketing, but a study plot. If you examine even the truly great snowfall years for VT ('69, '78, and '01 I think- give or take a year) you will see how quickly the snowpack dissolves by mid-april.
it just plummets given eastern low altitude temps and increased sun. it's like clockwork- things just melt uber-fast in the Northeast, so Eastern Township resorts and Jay pretty much become one in the same when the sun is high in the sky. coupled with crappy trail layout and wind-scouring over a season- yeah, jay will close early. and yeah, they do likely average 350" a year.
all the same, I don't like Jay all that much as a place to reguarly ski. so i'm not big into defending the place.