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Multi-parameter EFI (24-h up to valid time)

Base Time: Thu 05 Aug 2021 12 UTC T+36 Valid time: Sat 07 Aug 2021 00 UTC

This chart shows where the ENS system expects anomalous weather to occur using symbols - pink for wind and green for rain, and shading for the temperature.
The basis for the symbols is the Extreme forecast index (EFI), which compares the ENS distributions from a particular ENS run with the model climate.
ENS mean of Mean sea level pressure contours are overlaid to aid the interpretation.

Detailed description of EFI products can be found in ECMWF Forecast User Guide.

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ECMWF has implemented an upgrade of its Integrated Forecasting System, including a move from double to single precision and an increase in the vertical resolution of ensemble forecasts. #IFS47r2 #newfcsystem Find out more here: https://www.ecmwf.int/en/about/media-centre/news/2021/forecast-upgrade-i...

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