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The forecast signal is shown by colouring of all river pixels above a certain minimum catchment area (currently 50 km2 in EFAS and 250 km2 in GloFAS). The 15 pre-defined anomaly and uncertainty category combinations are used with the 15 colours, as described in the previous section (see e.g. Figure 1).
Figure 2 shows an exampleexamples, which highlights highlight some river sections with the explanation of the assigned colours and the corresponding anomaly and uncertainty levels. Both Figure 2a and 2b All three include the colour legend with the 15 categories and the corresponding colours (same as in Figure 1), for easier interpretation. a) and b) and from the EFAS seasonal, while c) is from the EFAS sub-seasonal, but the difference in appearance will only be the frame navgation panel in the bottom left corner, which will have the corresponding lead times.
The river network map also contains the reporting points, which are labelled in Figure 2b. These are river locations, where detailed information is provided about the evolution of the forecast signal over the forecast horizon. These reporting points are either fixed points, which are also used in the medium-range flood products and the basin-representative points, which are selected locations on a one point per basin basis. Further details about the basins and the representative points are available here: Placeholder CEMS-flood sub-seasonal and seasonal basins and representative stations.
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Figure 2. Example snapshots of the river network maps with the reporting points, lead time navigation indicated and categories and colours explained. The examples in a) and b) are from the EFAS seasonal, while c) from the EFAS sub-seasonal.
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