The forecaster on duty at the SIDC produces each day (nominal issue time 12:30UT) a probabilistic forecast for the occurrence of X-ray flares over the next 24h time span. Probabilities are provided for flare classes C, M and X separately. A full disk as well as an active region specific forecast is provided. The forecast is based on a combination of statistical techniques based on the active region properties and expert judgment on the evolution of active regions on the solar disk including regions rotating onto or off the disk.