This page summarises the important features of the GloFAS sub-seasonal outlook products. Further information on the details of the different steps generating these products is available at CEMS-flood sub-seasonal and seasonal forecast product generation methodology.
'Sub-seasonal Outlook' and 'Sub-seasonal Outlook - Basins'
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layers
The GloFAS sub-seasonal outlook layers shows show maps of the 'expected to happen' forecast anomaly and related uncertainty for the next 5-6 calendar weeks for all river pixels over 1000 km2 (river network layer called 'Sub-seasonal Outlook' on the map viewer) and for 942 major river basins over the GloFAS domain (basin layer called 'Sub-seasonal Outlook - Basins' on the map viewer), using colour-coded categories (see Figure 1). The products are updated once a day and published around mid afternoon, showing:
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Figure 1: GloFAS sub-seasonal outlook maps on the GloFAS-IS map viewer. A lead-time selection panel on the mapviewer allows the users to select the forecast period.
Reporting point pop-up window product
From the river network summary map, the reporting point pop-up products can be accessed by clicking on the point markers on the river network layer (grey squares showing the GloFAS fixed reporting points - see more in CEMS-Flood reporting points and dynamic point generation algorithm, and the black circles showing the basin-representative points). The pop-up products contain metadata information about the stations, a hydrograph with the evolution of the climatological, antecedent and forecast conditions, and the probability values for the extended 7-value anomaly categories (the 5 main categories shown on the maps and hydrographs, extended by two additional categories within the 'Near normal' category) and the evolution of these probabilities from previous forecast runs.
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