HM (I'm paraphrasing here) basically said on Twitter yesterday that the N PAC pattern looks to remain solid for the foreseeable future and if you think the overall large scale pattern will break down, you're probably gonna be wrong.
@antmasiello "If you are expecting the North Pacific pattern to flip next month or take on some kind of 2012-like look, you're going to be disappointed. It's not happening."
"The Siberian stationary wave system and MQI should prevent a torch scenario. This doesn't mean zero periods of warmth or SE ridge. AAM propagation is one wildcard as well as any intraseasonal Indo pulse. But background state should limit their dominance... Gulp."
"One crazier scenario is that the IO forcing-->N Pac circulation lock, creates a looping RMM, weaker Indo response and right back to dual Pac mode forcing. If that occurs, more significant Arctic shots would be on the way next month after current one settles."