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 weaker than ERA5 average
and is forecasted to remain weaker than average (according to GEFS-mean)
16 of 31 members have stronger vortex than average at the
last forecast step (2023-12-22 00:00:00)
The SSW probability in GEFS is: 0%
The zonal mean zonal wind at 10 hPa 60N is today (GFS analysis): 30.4 m/s
Weakest zonal wind at 10 hPa 60N in ERA5 record for todays date is: 1.0 m/s 1987
Strongest zonal wind at 10 hPa 60N in ERA5 record for todays date is: 55.7 m/s 2015
