The INGV real time strong motion data sharing during the 2016 Amatrice (central Italy) seismic sequence

During the August-September 2016 Amatrice, Mw 6.0, seismic sequence, the real time INGV strong mo-tion data sharing was assured by the INGV Strong Motion database (ISMD). Starting on August 24th, the main task of the web portal was to archive, process and distribute the strong-motion waveforms rec-orded by the permanent and temporary INGV accelerometric stations for the earthquakes with magnitude ≥ 3.0, occurring in the Amatrice area and surroundings. At present (i.e. September 30th, 2016), ISMD freely provides more than 21.000 strong motion waveforms to all users. In particular, about 2.200 strong motion waveforms were recorded by the temporary network installed for the earthquake sequence monitor-ing in the epicentral area by SISMIKO and EMERSITO working groups. In addition, for each permanent and temporary recording site, the web portal provides a comprehensive description of the necessary infor-mation to properly use the strong motion data.