Forecast User Guide: https://confluence.ecmwf.int/display/FUG/Plumes
Forecast User Guide: Meteograms
For background and discussion around different regime products, see: https://www.ecmwf.int/en/newsletter/165/meteorology/how-make-use-weather-regimes-extended-range-predictions-europe
Forecast User Guide: Medium Range Regime Charts
Forecast User Guide: Clustering - ENS Medium-Range
Forecast User Guide: Extratropical Cyclone Diagrams
Forecast User Guide: Extreme Forecast Index - EFI, and Shift of Tails - SOT