Polar vortex status

The SPV is currently stronger than all other years in the ERA5 record for todays date!!! . The zonal mean zonal wind at 10 hPa 60N is today (GFS analysis): -10.2 m/s Weakest zonal wind at 10 hPa 60N in ERA5 record for todays date is: -13.9 m/s 1997 Strongest zonal wind at 10 hPa 60N in ERA5 record for todays date is: -10.3 m/s 2017