This study proposes an original approach for predicting shallow translational slide hazards, which are triggered by irregular rainfall events, via the method of zonation at a regional scale in emergency situations. The proposed model incorporates the infinite slope method in a GIS platform to assess hazard and risk associated with slope instability. This application can be integrated into the emergency management software SIMGE 1.0., SGE 2.0. The objective of the work is to provide a quick tool for managing emergencies and predicting shallow rainfall-induced landslides (RILs). The originality of this approach includes the relationship between two variables (m, Z)—with m being a hydrological pattern of steady state simulating the effects of rain that cause translational slides and Z being the characteristic sliding depth based on the bounded lithological unit. This method provides hazard maps, including zonation based on a factor of safety towards shallow landslides, where stable and unstable conditions (depending on precipitation) are determined for managing emergencies. This approach was applied in the Guadalmansa River basin, in Benahavis, Málaga (Andalusia), where numerous shallow landslides occurred in 2010, caused by extreme rainfall events, and a lithological unit has been isolated for this research (Alpujarride schist). The results obtained through this method have been verified after analysing the studied area's landslide inventory. •Determinist methodology to predict stable and unstable areas of shallow slopes.•Evaluation of Rainfall infiltration triggering unstable areas.•Characterization and geomechanical study of the failure of the top-soil mica-schist Alpujarride.