When I lived in California I would often do a twitter search after feeling a small earthquake. If there weren't any results, I would usually assume it was a tru

When I lived in California I would often do a twitter search after feeling a small earthquake. If there weren't any results, I would usually assume it was a truck passing by or something like that. Very often there would be tweets about the earthquake several minutes before the official USGS page for the earthquake was created.