quoting Nessari:

…they must not have the California shifts then.

Really tho the PNW's dialect differences from everywhere else are damn subtle…I usually don't even notice them until we're discussing things and oddities emerge, and thankfully often enough Rad is able to confirm things so it's not just me being bizarre. They're also not usually pronunciation-based; so far as that goes the only difference from more eastern forms of GA is our /u:/ is only weakly centralized, if at all (mine certainly isn't.)

...I can confirm many things, but your statement about /u/ is not among them! Californian and PNW English have the most fronted /u/ of anyone on the continent; half the time people front it all the way to [y] or [Y] and you never even hear it because the rounding is the wrong type (i.e. European /y/ is always compressed-type rounding; ours is protruding-type, if I've got the terms the right way around).