| MAP | 5.6 | 2011/04/21 16:11:17 | 37.508 | 141.268 | 36.6 | NEAR THE EAST COAST OF HONSHU, JAPAN |
| MAP | 6.1 | 2011/04/21 13:37:04 | 35.617 | 140.452 | 42.9 | NEAR THE EAST COAST OF HONSHU, JAPAN |
| MAP | 5.3 | 2011/04/21 08:18:15 | 38.332 | 142.207 | 27.8 | NEAR THE EAST COAST OF HONSHU, JAPAN |
| MAP | 5.0 | 2011/04/21 03:08:41 | 37.286 | 142.337 | 44.3 | OFF THE EAST COAST OF HONSHU, JAPAN |
| MAP | 6.0 | 2011/04/21 01:54:41 | 40.306 | 143.629 | 7.0 | OFF THE EAST COAST OF HONSHU, JAPAN |
| MAP | 5.8 | 2011/04/21 00:39:05 | 40.498 | 143.479 | 15.0 | OFF THE EAST COAST OF HONSHU, JAPAN |
Source: USGS