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User Guide to ECMWF Forecast Products > Derived products from the EPS > The Extreme Forecast Index (EFI) > 
The interpretation of the EFI Plans  
   

EFI maps

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The EFI reference climate
The cumulative distribution function
Calculating the EFI
The interpretation of the EFI
EFI maps
Plans
 
 

On the ECMWF web site, the EFI is presented in maps, either for each parameter separately or on a composite map for all parameters (see Figure 54)

Europe_All32parameters_3

Figure 54:  The global “anomalous weather” or “interactive EFI” chart from 17 August 2011, 00 UTC between +48 and +72 hours. It shows the geographical distribution of the EFI of the principal weather parameters: maximum wind gust, 24 h precipitation and 2 m temperature, overlaid with the ensemble mean of the 1000 hPa Z field.

Attached to each grid point of the global EFI maps there is a CDF diagram for each of the EFI parameters, with information on climate at the grid point and the available forecast distributions, including the corresponding EFI values. These diagrams can be displayed by clicking on the desired location.




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The interpretation of the EFI Plans  
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