The Flood Summary layers show where GloFAS forecasts a flood is forecasted within the full 30-day forecast horizon (days 1-30) or within 3 distinct time periods : (days 1-3, days 4-10 , and or days 11-30. For ) for GloFAS model river network with upstream area larger than 1000km2, the layer has different colour depending on the forecast value during the forecast period:
- Purple: maximum of the ensemble mean discharge is >20 year (purple)
- Red: maximum of the ensemble mean discharge is between 5-20 year
- Dark yellow: maximum of the ensemble mean discharge is between 2-5 year
- Light yellow: total probability >20% exceeds 2-year
1000 km2. The colours are defined according to the dominant flood signal in the probability of exceedance of the 2-, 5- and 20-year flood thresholds as follows:
- Dark purple: 20-year probability exceeds 75%
- Medium purple: 20-year probability between 50-75%
- Light purple: 20-year probability between 30-50%
- Dark red: 20-year probability is below 30% and 5-year probability exceeds 75%
- Medium red: 20-year probability is below 30% and 5-year probability is between 50-75%
- Light red: 20-year probability is below 30% and 5-year probability is between 30-50%
- Dark yellow: 5-year probability is below 30% and 2-year probability exceeds 75%
- Medium yellow: 5-year probability is below 30% and 2-year probability is between 50-75%
- Light yellow: 5-year probability is below 30% and 2-year probability is between 30-50%
