I do include Tremblant among the Northeast areas where I have recorded percent of terrain open bimonthly since 2003-04. At that time I made an arbitrary decision which areas without adequate snowfall info were important enough to track percent of terrain open. Apologies to Harvey for not including Gore.
To track in-season snowfall I need certain info:
1) Past historical monthly records so at any date I can calculate percent of normal. Tremblant has season snowfall history on its website
here but I don't know for how long it's been online. I have put that into one of my spreadsheets, but have never used it publicly. Why? I distrust season totals because I don't know starting and ending dates, and I want to normalize data on a Nov. 1 - Apr. 30 basis for consistency. It's also much easier to curate monthly data for credibility.
2) The ski area needs to update season totals daily on its website. The Tremblant snow report page is in Alterra's format but it may not have been reporting in-season snowfall pre-Alterra.
There's also my personal perception of eastern Canada based upon:
1) My original
Powder Magazine contact Leslie Anthony in 1995. He was a huge fan of Le Massif dating back to it bus shuttle days so that why it's the one eastern Canadian place where I do track in-season snowfall. Leslie grew up in eastern Canada and for the
Powder cover story he had me call many upper New England areas to get historical snowfall but never asked me to call Trmeblant.
2) The Jay Peak discussion back in 2015 put the eastern townships and Mt. Sutton specifically on my radar. Sutton's data is also season totals, but opening and closing date history is available too. I had enough Jay daily data to project a Nov. 1 - Apr. 30 average of 243 inches for Sutton and put that on my
regional snowfall page.
My perception (see Leslie Anthony above) was that the Laurentians were mostly snowmaking dependent so that natural snow was less important, sort of like southern New England or the Catskills. Those kind of ski areas generally don't maintain accurate snowfall histories in any case.
The Tremblant annual data averages 175 inches, which is similar to Whiteface or Sugarloaf. I would have to model the in-season distribution of those annual totals in order to do in-season snowfall tracking. I'm inclined to get around to that sometime since Tremblant has similar prominence to eastern skiers as Whiteface or Sugarloaf, probably after adding Tremblant to the regional snowfall page at the end of this season.