In order to identify the best ICs, statistical indicators such as forecast accuracy, frequency
bias, false alarm rate and equitable threat score for the accumulated precipitation
are used. The results show that the assimilation of DWR data has a positive
impact on the prediction of the heavy rainfall of this event, both assimilating reflectivity
and radial velocity, together with conventional observations. Finally, warm start results
20 in more accurate experiments as well as the outer loops strategy.