Where exactly did you see it talked about, and when? I’m legitimately curious because I never/heard it mentioned anwhere, and I have a fairly large circle of peers/friends in wx/climate related fields.
In this case I assume this means BC, WA, OR, far northern CA, Idaho north of Riggins, and Western MT before the divide so including Mercurial (AL Tahoe is an honorary member even if not in the NW)?
I laughed. I really doubt it. We get warm nosed for the first half of the season. Of course, I don't doubt getting more in one month but not in a whole season.