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Sequence · 2016-11-21

M 6.9 · Observed seismic cluster · 35 km ESE of Namie, Japan

Explore clusters of M4.5+ events observed around significant earthquakes. These clusters are descriptive and are not presented as earthquake predictions.

M4.5+ events in cluster63
M6+1
Analysis radius324 km
Observation window14 days
Largest secondary eventM 5.9
Quake Pulse

Sequence timeline

Within first 24 hours42
Within first 7 days55
Observed duration13.0 d
Gap from reference eventM 1.0
0 h13.0 d
Quake Pulse

Main-event impact

478 Felt reports · PAGER GREEN · Tsunami indicator · Shallow

79/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.935 km ESE of Namie, Japan9.0 km2016-11-21 20:59:49 UTCView event →
M 5.052 km SE of Namie, Japan10.0 km2016-11-21 21:08:08 UTCView event →
M 5.4near the east coast of Honshu, Japan10.0 km2016-11-21 21:10:20 UTCView event →
M 4.531 km NE of Iwaki, Japan14.5 km2016-11-21 21:15:49 UTCView event →
M 5.034 km SSE of Namie, Japan10.0 km2016-11-21 21:16:16 UTCView event →
M 4.649 km SE of Namie, Japan10.0 km2016-11-21 21:17:32 UTCView event →
M 4.640 km ESE of Namie, Japan10.0 km2016-11-21 21:17:51 UTCView event →
M 4.859 km ESE of Namie, Japan10.0 km2016-11-21 21:20:34 UTCView event →
M 4.843 km ESE of Namie, Japan10.0 km2016-11-21 21:28:23 UTCView event →
M 5.326 km SE of Namie, Japan24.9 km2016-11-21 21:39:44 UTCView event →
M 5.051 km E of Iwaki, Japan10.0 km2016-11-21 21:42:37 UTCView event →
M 5.134 km ENE of Iwaki, Japan10.0 km2016-11-21 21:43:07 UTCView event →
M 4.645 km ESE of Namie, Japan10.0 km2016-11-21 21:49:05 UTCView event →
M 4.954 km ESE of Namie, Japan10.0 km2016-11-21 21:50:55 UTCView event →
M 4.558 km ESE of Namie, Japan10.0 km2016-11-21 22:17:16 UTCView event →
M 4.745 km SE of Namie, Japan10.0 km2016-11-21 22:48:24 UTCView event →
M 4.641 km ESE of Namie, Japan17.9 km2016-11-21 23:23:17 UTCView event →
M 4.946 km SE of Namie, Japan23.7 km2016-11-21 23:39:54 UTCView event →
M 4.541 km ESE of Namie, Japan33.9 km2016-11-21 23:52:07 UTCView event →
M 4.855 km E of Namie, Japan10.0 km2016-11-22 00:03:08 UTCView event →
M 4.951 km ENE of Iwaki, Japan10.0 km2016-11-22 00:08:01 UTCView event →
M 4.557 km SE of Namie, Japan10.0 km2016-11-22 00:28:04 UTCView event →
M 4.646 km SE of Namie, Japan10.0 km2016-11-22 00:32:40 UTCView event →
M 4.544 km E of Namie, Japan15.1 km2016-11-22 00:47:11 UTCView event →
M 4.550 km ESE of Namie, Japan10.0 km2016-11-22 01:09:28 UTCView event →
M 4.536 km SE of Namie, Japan27.4 km2016-11-22 01:10:04 UTCView event →
M 4.747 km SE of Namie, Japan10.0 km2016-11-22 01:31:27 UTCView event →
M 4.658 km SE of Namie, Japan5.6 km2016-11-22 01:37:58 UTCView event →
M 4.652 km ESE of Namie, Japan10.0 km2016-11-22 03:05:52 UTCView event →
M 4.553 km ESE of Namie, Japan10.0 km2016-11-22 03:32:10 UTCView event →
M 4.743 km SE of Namie, Japan10.0 km2016-11-22 04:26:11 UTCView event →
M 4.548 km ESE of Namie, Japan10.0 km2016-11-22 07:32:25 UTCView event →
M 4.66 km WSW of Namie, Japan30.7 km2016-11-22 07:44:38 UTCView event →
M 4.6near the east coast of Honshu, Japan8.7 km2016-11-22 08:49:41 UTCView event →
M 4.544 km ESE of Namie, Japan21.1 km2016-11-22 11:01:32 UTCView event →
M 4.641 km SE of Namie, Japan10.0 km2016-11-22 13:34:40 UTCView event →
M 5.242 km SE of Namie, Japan15.9 km2016-11-22 14:03:59 UTCView event →
M 4.751 km ESE of Namie, Japan10.0 km2016-11-22 14:14:29 UTCView event →
M 4.852 km ESE of Namie, Japan10.0 km2016-11-22 15:04:51 UTCView event →
M 5.137 km SE of Namie, Japan31.6 km2016-11-22 17:41:16 UTCView event →
M 4.549 km ESE of Namie, Japan27.5 km2016-11-22 20:09:52 UTCView event →
M 4.663 km ESE of Namie, Japan32.9 km2016-11-22 20:12:09 UTCView event →
M 4.548 km SE of Namie, Japan10.0 km2016-11-22 21:05:52 UTCView event →
M 4.652 km ESE of Namie, Japan10.0 km2016-11-23 09:36:36 UTCView event →
M 4.842 km E of Namie, Japan13.9 km2016-11-23 14:20:06 UTCView event →
M 4.636 km SE of Namie, Japan10.0 km2016-11-23 18:13:00 UTCView event →
M 4.652 km E of Iwaki, Japan16.9 km2016-11-23 20:49:33 UTCView event →
M 5.941 km SE of Namie, Japan9.0 km2016-11-23 21:23:36 UTCView event →
M 4.540 km ENE of Iwaki, Japan10.0 km2016-11-23 21:42:30 UTCView event →
M 4.841 km ENE of Iwaki, Japan10.0 km2016-11-24 04:48:07 UTCView event →
M 4.749 km SE of Namie, Japan10.0 km2016-11-24 16:55:55 UTCView event →
M 4.741 km ESE of Namie, Japan13.6 km2016-11-25 00:20:02 UTCView event →
M 4.633 km ESE of Namie, Japan17.0 km2016-11-27 10:17:55 UTCView event →
M 4.651 km ESE of Namie, Japan9.2 km2016-11-27 12:50:16 UTCView event →
M 4.629 km SE of Namie, Japan22.0 km2016-11-27 22:16:55 UTCView event →
M 4.5109 km E of Miyako, Japan21.8 km2016-11-29 00:26:24 UTCView event →
M 4.634 km E of Namie, Japan34.7 km2016-12-01 23:03:27 UTCView event →
M 4.72 km SSW of Chiba, Japan73.2 km2016-12-02 20:16:24 UTCView event →
M 4.852 km SE of Namie, Japan10.0 km2016-12-03 23:34:40 UTCView event →
M 4.737 km ESE of Namie, Japan31.9 km2016-12-04 05:33:10 UTCView event →
M 4.944 km SE of Namie, Japan14.9 km2016-12-04 05:36:11 UTCView event →
M 4.761 km ESE of Namie, Japan2.7 km2016-12-04 11:42:21 UTCView event →
M 4.558 km NE of Namie, Japan62.9 km2016-12-04 20:43:35 UTCView event →

Interpretation

Explore clusters of M4.5+ events observed around significant earthquakes. These clusters are descriptive and are not presented as earthquake predictions. Historical small-earthquake detection varies through time. Long-term comparisons are most robust at higher magnitude thresholds.

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