**Acknowledgements**

The development of the MacroSeismic Sensor (MSS) in cooperation with teachers and students of the polytechnic TGM Wien was funded by the Federal Ministry of Education, Science and Research, Austria, the Austrian Academy of Sciences, and the Natural History Museum Vienna. Funds of the Federal State Government of Lower Austria allowed for the buildup of the MSS network in cooperation with teachers and students of the polytechnic HTBLuVA Wiener Neustadt. Additional sponsoring granted the Baumit GmbH (operator of a large quarry). Funding of the new MSS data visualizations is granted by netidee (https:// www.netidee.at/) for MSS Outreach. Map images in this publication have been created using data from OpenStreetMap (www.openstreetmap.org, © OpenStreetMap-Contributors), OE3D (www.oe3d.at, © Rechenraum e.U.) and BEV (www.bev.gv.at, © BEV 2020). We express our thanks to mayors, officials, and private persons who supported the installation of the MSS stations in their communities. Furthermore we thank Wolfgang Lenhardt for critically reading and commenting the manuscript.
