I don’t expect we will ever return to the 20” avg. After doing that trend graph I did a month or so ago, I think that’s the writing on the wall. We may hold a 10” median / 15” mean, but certainly not a return to 20” in either averaging method.
Still expect some big winters ahead or at least some years with a HECS thrown in, though.
Best case scenario is we get a heater that resembles a warmer version of the 1960s with blocking. Less snow overall, but maybe some juiced up storms that drop 24” that would otherwise have produced 12” in a colder climate.