In fact, weakening (and disappearing) La Nina indicates better prospects for another "normal" winter. As you noted, La Nina can also underdeliver.I'm always hopeful that the weather will be epic. La Nina could be wetter than normal or drier than normal. El Nino can be drier than normal or wetter than normal. Normal ocean temperature can have wetter than normal or drier than normal winters. What is normal?
You are correct that the La Nina is weakening. Still a snowy Tahoe possible. I'm still hopeful. Not superstitious but I'm sending our friends who ALWAYS bring snow up before Christmas. We'll have a fun winter.
Eric