Advancing global NWP through international collaboration

EFI and SOT 2 metre temperature over Extended range

Base Time: Thu 18 Apr 2024 00 UTC T+264 Valid time: Mon 22 Apr 2024 00 UTC - Mon 29 Apr 2024 00 UTC

The Extended Forecast Index (EFI) represented by the colour shading provides specialized forecast guidance for anomalous or extreme weather events by comparing the ensemble forecast members with the model climate for the chosen location, time of year and forecast lead time.
The Shift of Tails (SOT) index complements the EFI by providing information about how extreme an anomalous event might be. Note that the charts indicate an average of the 2m temperature over successive one-week periods.

A detailed description of the extended range Extreme forecast Index and Shift of Tails products can be found in ECMWF Forecast User Guide.

View all chartschevron_right

Forecast charts and data

We provide current forecasts, climate reanalyses and specific datasets. These are available via the web, point-to-point dissemination, data servers and broadcasting.

Datasets

Forecasts, analyses, climate re-analyses, reforecasts and multi-model data are available from our archive (MARS) or via dedicated data servers or via point-to-point dissemination.

 Access to forecasts

Researchers, WMO members, commercial users and satellite data providers can gain access to ECMWF forecast products under one of our various license agreement types.

Workshops and education

Education is a key element of our work at ECMWF, enabling our partners to get the most from ECMWF's services and develop an advanced understanding of forecasting.

Full calendar

ECMWF workshops are open to the worldwide meteorological community, though some training is restricted to member states.