####------------------------------------ Polar vortex status ------------------------------------###

The strat. vortex is currently marginally weaker than ERA interim average 
and is forecasted to become stronger than average (according to GEFS-mean)
20 of 31 members have stronger vortex than average at the 
last forecast step (2021-08-08 06:00:00)

The zonal mean zonal wind at 10 hPa 60N is today (GFS analysis): -9.0 m/s 
Weakest zonal wind at 10 hPa 60N in ERA interim record for todays date is: -11.4 m/s 2007 
Strongest zonal wind at 10 hPa 60N in ERA interim record for todays date is: -8.2 m/s 1992