Climatological radar rainfall dataset of 5 minute precipitation depths at a 1-km grid, which have been adjusted employing validated and complete rain gauge data from both KNMI rain gauge networks. Same dataset as "RAD_NL25_RAC_MFBS_5min", except that now an Extended Mask (EM) has been applied to this dataset. As a result, data are also available up to tens of kilometers away from the land surface of the Netherlands, i.e. above Belgium, Germany, and above open water. This dataset is updated once a month providing data up to a few months ago.