Polar vortex status

The SPV is currently weaker than all other years in the ERA5 record (only 1979-2025 included) for todays date!!! The SSW probability in GEFS is: 100.%. The SSW probability in ECEPS is: 81%. The zonal mean zonal wind at 10 hPa 60N is today (GFS analysis): 4.9 m/s Weakest zonal wind at 10 hPa 60N in ERA5 record for todays date is: 12.2 m/s 2016 Strongest zonal wind at 10 hPa 60N in ERA5 record for todays date is: 35.4 m/s 1990 . (Only 1979-2025 included in this ERA5-dataset)