Hydrological forecasts are produced by forcing meteorological forecasts through a hydrological model or conceptual algorithm. In EFAS, meteorological forecasts from different numerical weather prediction systems are used for different forecasting ranges.
| Product | Forecast Name | Provider | EFAS acronym | Maximum lead time | N. of Ensembles | Spatial Resolution |
|---|---|---|---|---|---|---|
| Flash flood | COSMO | 5 days | 20 | ~ 7 km | ||
| Flash flood | Opera nowcasting | UPC | Opera | 4 hours | 1 | ~ 2 km |
| Medium range | DWD | Det. DWD | 5 days | 1 | ~ 6.5 km | |
| Medium range | ICON* | DWD | Det. DWD | 7 days | 1 | ~ 13 km |
| Medium range | HRES | ECMWF | ECMWF-HRES | 10 days | 1 | ~ 9 km |
| Medium range | ENS | ECMWF | ECMWF-ENS | 15 days | 51 | ~ 18 km |
| Seasonal outlook | SEAS5 | ECMWF | SEAS5 | 8 weeks | 51 | ~ 36 km |