We present a revised and comprehensive macroseismic dataset of the 5 May 1990 earthquake that occurred in southern Italy (Mw 5.77). By re-evaluating all sources, we compiled a new dataset of 1393 macroseismic data points. This revised dataset shows a general decrease in higher intensity values compared to previous assessments. Additionally, we collect extensive observations of seismically-induced hydrological changes.

We present the results of a rapid and reliable study of 45 Italian earthquakes characterized by datasets with potential inconsistencies or inhomogeneities. The used methodology obviates the need for exhaustive earthquake re-evaluation, and it is particularly effective for the updating of medium and low events, with a large amount of low-intensity data. The result is a new dataset very useful in improving “seismic histories” and in contributing to the enhancement of the seismic hazard of an area.

Through the analysis of the morphostructural setting in which the seismicity of Rome is framed, we explain why the city should not expect to suffer damage from a big earthquake.