The latest ECMWF Weeklies hint at a retrograding blocking ridge from Scandinavia into Greenland and then Canada (-NAO). Such an event is not just a fantasy, given the overall wave train progression, anticipated Pac forcing, and tropospheric state in the wake of the SSW event. pic.twitter.com/meDXPmsa8N

— John Homenuk (@jhomenuk) January 25, 2019