And, if you have followed along with myself or other #S2S forecasters like my colleagues @judah47, @DrAHButler, and @SimonLeeWx, you know that the NH stratospheric #PolarVortex at 10 hPa has been strong to very strong this winter, including now (blue shading). 2/ pic.twitter.com/CFQP5G3EJt

— Jason Furtado (@wxjay) February 7, 2022