As others have noted, the EPO index is close to an all-time record negative value, reflecting the extreme Alaska/NW Canada ridge. Winters following a negative EPO extreme in November show an interesting signal: negative AO/NAO in 6 of 8, but NOT the most recent two (14-15, 17-18) pic.twitter.com/yhy7W1LZH0

— World Climate Service (@WorldClimateSvc) November 16, 2022