EFI and SOT 2 metre temperature over Extended range
Base Time: Thu 07 May 2026 00 UTC T+264 Valid time: Mon 11 May 2026 00 UTC - Mon 18 May 2026 00 UTC
The Extreme 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 Sub-seasonal range Extreme forecast Index and Shift of Tails products can be found in ECMWF Forecast User Guide.
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