Polar vortex status
Zonal mean u-wind 60°N 10hPa ERA5
Zonal mean zonalwind and EP-flux
Single wave components 300/30hPa Wave components VCS Wave series
Geopot.height multi levels Geopot.height temp. ERA5 Zonal mean u-wind 60°N 10hPa GEFS Zonal mean u-wind 60°N VCS Eddy heat flux and GPH
Single wave components 300/30hPa Wave components VCS Wave series
Geopot.height multi levels Geopot.height temp. ERA5 Zonal mean u-wind 60°N 10hPa GEFS Zonal mean u-wind 60°N VCS Eddy heat flux and GPH
Polar vortex status
The SPV is currently stronger than ERA5 average
but is forecasted to weaken compared to average (according to GEFS-mean)
1 of 31 members have stronger vortex than average at the
last forecast step (2023-02-18 18:00:00)
The SSW probability in GEFS is: 77%
The zonal mean zonal wind at 10 hPa 60N is today (GFS analysis): 32.0 m/s
Weakest zonal wind at 10 hPa 60N in ERA5 record for todays date is: -15.5 m/s 2009
Strongest zonal wind at 10 hPa 60N in ERA5 record for todays date is: 62.3 m/s 1989
