Latest GEFS shows a significant change in early-mid-Mar vs the run you posted from two days earlier, with Alaskan ridge regime (a much colder one for eastern US) now about equally likely as with Arctic Low. Implies the subseasonal window of high predictability may be transient pic.twitter.com/qSFRzYnRVC

— Yaakov Cantor (@yconsor) February 13, 2022