Up at 10 hPa, the 60°N zonal mean zonal wind recovers (again) to westerly on Jan 24th - but there is subsequent wave activity which brings it down again, and the vortex is (in this forecast) a long way from hitting post-SSW radiative recovery mode. pic.twitter.com/QZpfPdj2YC

— Dr Simon Lee (@SimonLeeWx) January 16, 2021