Additional info:
The earthquake was felt also in southern Moravia and Bohemia with intensity III-IV on the EMS-98 macroseismic scale. If you felt it too you can report your experience here. The maximum epicentral intensity according to the ZAMG Austria reached level V-IV.
It presented no threat to any of the Czech NPPs.
The earthquake was followed by a number of aftershocks, the strongest were recorded on 24.9.2013 at 15:53 with magnitude 2.8, the strongest so far on 2.10.2013 at 19:17 with magnitude 4.3 and at 21:42 with magnitude 3.0, and on 23.10.2013 at 21:34 with magnitude 2.8.
More details can be found at ZAMG Austria or here.