An earthquake of M magnitudeL 4.0 it happened this morning 08 hours: Italian 21 (9 December 2016 07:21 UTC) between the provinces of Reggio Emilia and Modena. The epicenter was located by National Seismic Network of INGV to one depth of about 8 km.
I municipalities within 20 km of the epicenter are as follows (the columns following the names respectively indicate the province, the distance from the epicenter in km, the inhabitants):
More information about the event on the information page of the National Earthquake Center: http://cnt.rm.ingv.it/event/11272441
According to the questionnaires arrived so far on the site http://www.haisentitoilterremoto.it/, the earthquake this morning it was slightly affected in the provinces of Modena and neighboring provinces. Below is the map (updated at 09:39) with the distribution of the seismic effect expressed in MCS scale (Mercalli-Cancani-Sieberg).
Map of seismic effect in MCS scale (Mercalli-Cancani-Sieberg) showing the distribution of the effects of the earthquake on the territory as reconstructed from the online questionnaires. The map contains a legend (on the right). The purple star indicates the epicenter of the earthquake, the colored circles refer to the intensities associated with each municipality. The caption above shows the characteristics of the earthquake: date, magnitude (ML), depth (Prof) and local time. The number of questionnaires processed to obtain the map itself is also indicated.