What I am willing to say is that a deeply negative NAO October favors at least one month from DM to average a neg NAO, which only increases confidence in what I am already going with.
That may not sound like much, but if you consider the past several years, I think its pretty significant. Dating back to March 2013, the only DM month that has managed a neg NAO in the mean is March 2018...which I accurately predicted.
I'm pretty confident that I will also accurately predict the first neg NAO winter month since March 2018, this season.