Return period exceedance map showing The AIFS Single layer shows the highest return period exceedance within the 15-day forecast range based on the AIFS single forecast. River cells above 250km2 are shown by colouring, if they are in one of the flood levels. Yellow pixels show maximum river discharge in the 15-day period exceeding the 2-year flood threshold (at any point in the 15-day horizon), red pixels show 5-year exceedance, while purple pixels show 20-year exceedance.
