Polar vortex status

The SPV is currently stronger than ERA5 average and is forecasted to remain stronger than average (according to GEFS-mean) 23 of 31 members have stronger vortex than average at the last forecast step (2026-10-21T12:00:00) The SSW probability in GEFS is: 0%. The zonal mean zonal wind at 10 hPa 60N is today (GFS analysis): 16.0 m/s Weakest zonal wind at 10 hPa 60N in ERA5 record for todays date is: 9.2 m/s 1981 Strongest zonal wind at 10 hPa 60N in ERA5 record for todays date is: 20.2 m/s 1995