Wow that's high CM.
To give you a comparable, in WA we've got 60 winter reports in the SSR.
Only 6 are above 2,500ft in elevation and all are from Eastern WA where obviously it's higher anyway.
In Western WA, the Olympics, in Winter especially, averages very low with only one report above 1,000ft in winter.
In the South Cascades we are generally low too.
As is the North Cascades.