Good indication of wave reflection in GEFS (+ve heat flux over Siberia, -ve heat flux over Canada) at the end of Week 1/early Week 2, likely reinforcing the "Western NA Ridge / Eastern NA Trough" regime and keeping the cold locked in through Week 2 and maybe Week 3. pic.twitter.com/UvUyeVFn5l

— Jason Furtado (@wxjay) October 13, 2022