2020.4.18 Bonin deep earthquake 2020-04-19 20:49:53 | Weblog Deep earthquake at Bonin islands on Apr.18,2020. M(JMA) : 6.9 M(USGS) : 6.6 Maximum Intensity : 4 (JMA, Haha-jima) New sensor (TOGS) works well. OGS sensor locates on same ground table.