The EFAS CEMS-Flood medium-range (EFAS) and 30days (GloFAS) flood forecasts provide an overview of flood probability over the coming 10 (EFAS) or 30 days (GloFAS). They are created by comparing the EFAS CEMS-Flood forecast simulations with EFAS CEMS-Flood flood threshold levels. These flood threshold levels are calculated for every grid cell, based on a discharge time series simulated by the operational LISFLOOD hydrological model from observed (EFAS) and proxy observed (GloFAS) meteorological data.
Results are shown as the 'Reporting Points' summary layer in EFAS-ISeach dedicated EFAS and GloFAS Information System, and as associated products (see EFAS medium-range forecast products and GloFAS medium-range forecast products).
Additionally, the river discharge medium-range (EFAS) and 30 days (GloFAS) forecasts are also provided as time series through the Copernicus Climate Data Store and other means, described in the CEMS-Flood Data Access pages.
Two additional Additional processing are undertaken on EFAS CEMS-Flood medium-range forecasts:
- Estimation of the potential level of impact caused by the floodings, for both EFAS and GloFAS.
- For stations with river discharge observation available in near-real time, a statistical post-processing to correct the forecasts., for EFAS only
Note there are restrictions regarding accessibility to EFAS medium-range forecasting described in the EFAS-IS dedicated pages.