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Spatiotemporal patterns of rainfall are important characteristics that influence runoff generation and\udflash-flood magnitude and require high-resolution measurements to be\udadequately represented. This need is further emphasized in arid climates,\udwhere rainfall is scarce and highly variable. In this study, 24 years of\udcorrected and gauge-adjusted radar rainfall estimates are used to (i)\udidentify the spatial structure and dynamics of convective rain cells in a dry\udclimate region in the Eastern Mediterranean, (ii) to determine their\udclimatology, and (iii) to understand their relation with the governing\udsynoptic systems and with flash-flood generation. Rain cells are extracted\udusing a segmentation method and a tracking algorithm, and are clustered into\udthree synoptic patterns according to atmospheric variables from the\udERA-Interim reanalysis. On average, the cells are about 90 km<sup>2</sup> in size, move 13 m s<sup>−1</sup> from west to\udeast, and live for 18 min. The Cyprus low accounts for 30 % of the\udevents, the low to the east of the study region for 44 %, and the Active\udRed Sea Trough for 26 %. The Active Red Sea Trough produces shorter rain\udevents composed of rain cells with higher rain intensities, longer lifetime,\udsmaller area, and lower velocities. The area of rain cells is positively\udcorrelated with topographic height. The number of cells is negatively\udcorrelated with the distance from the shoreline. Rain-cell intensity is\udnegatively correlated with mean annual precipitation. Flash-flood-related\udevents are dominated by rain cells of large size, low velocity, and long\udlifetime that move downstream with the main axis of the catchments. These\udresults can be further used for stochastic simulations of convective rain\udstorms and serve as input for hydrological models and for flash-flood\udnowcasting systems

Convective rainfall in a dry climate: relations with synoptic systems and flash-flood generation in the Dead Sea region