Until this anticyclonic wave break over the Bering Sea & the resulting high-latitude the cut-off blocking high are fully established, medium-long range NWP forecasts over N America will continue to be problematic + less skillful than usual https://t.co/yTv7ha1qhY pic.twitter.com/SRAZd0l3cq

— Eric Webb (@webberweather) December 30, 2021