In the US the USGS has set up a partnership with amateur radios in order to complement the questionnaires they collect.
Indeed, when a severe event happen, there may not be enough bandwith or network to collect information thourgh online tools… so they turned to amateur radios for that!
Smart and cool!
Looks like citizen seismology is finding another path!
Did i read donut ? 
Yes indeed… we also observe it sometimes with LastQuake when there’s a damaging earthquake.
Because people in the affected area are preocupied for their relatives or their own safety, or because network are down they don’t report the earthquake through the app… which then create a whole when we map data.
This is a nice metaphore for a potentially terrible event 
Read more about it: https://pubs.geoscienceworld.org/ssa/srl/article-abstract/89/1/138/523098/Felt-Reports-for-Rapid-Mapping-of-Global