Polar vortex status

The SPV is currently weaker than ERA5 average and is forecasted to remain weaker than average (according to GEFS-mean) 9 of 31 members have stronger vortex than average at the last forecast step (2026-02-28 12:00:00) The SSW probability in GEFS is: 19%. The zonal mean zonal wind at 10 hPa 60N is today (GFS analysis): 21.9 m/s Weakest zonal wind at 10 hPa 60N in ERA5 record for todays date is: -15.5 m/s 2018 Strongest zonal wind at 10 hPa 60N in ERA5 record for todays date is: 70.4 m/s 1988