The -NAO in particular is weaker in CP winters (not significant), with less significant cold air anomalies over the east coast USA and northern Europe. Of course, if you by chance get a SSW, that could definitely swing things towards a more -NAO pattern. https://t.co/V8H3Wikr0L pic.twitter.com/G8xiuduJid

— Dr. Amy H Butler (@DrAHButler) October 30, 2018