Those compiling winter outlooks might consider trends in the NAO and PNA.

🔴 The last time the PNA was strongly positive during winter was 2014-16—when the warm North Pacific SST blob was occurring.

🔵 The NAO has been positive for 8 winters in a row.https://t.co/TzCn206LdS pic.twitter.com/yKI9MnZH1D

— Ben Noll (@BenNollWeather) October 5, 2019