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Sequence · 2011-06-22

M 6.7 · Observed seismic cluster · 41 km NNE of Miyako, 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 cluster23
M6+1
Analysis radius292 km
Observation window14 days
Largest secondary eventM 5.5
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Sequence timeline

Within first 24 hours3
Within first 7 days12
Observed duration13.1 d
Gap from reference eventM 1.2
0 h13.1 d
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Main-event impact

101 Felt reports · Shallow

56/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.741 km NNE of Miyako, Japan33.0 km2011-06-22 21:50:52 UTCView event →
M 4.759 km NE of Miyako, Japan35.0 km2011-06-23 10:15:57 UTCView event →
M 5.313 km ENE of Ishinomaki, Japan35.0 km2011-06-23 10:35:00 UTCView event →
M 4.7219 km ESE of Yamada, Japan35.0 km2011-06-24 15:31:02 UTCView event →
M 5.535 km SSE of Shizunai-furukawach?, Japan58.1 km2011-06-24 17:39:27 UTCView event →
M 4.716 km NE of Miyako, Japan71.8 km2011-06-25 00:44:20 UTCView event →
M 4.5117 km ENE of Miyako, Japan35.0 km2011-06-25 15:04:17 UTCView event →
M 4.786 km E of Hachinohe, Japan35.0 km2011-06-26 10:11:34 UTCView event →
M 4.8132 km E of Yamada, Japan35.0 km2011-06-27 12:12:07 UTCView event →
M 5.2186 km ENE of Miyako, Japan27.2 km2011-06-28 07:42:55 UTCView event →
M 4.964 km ESE of Ishinomaki, Japan60.9 km2011-06-28 13:22:59 UTCView event →
M 4.6271 km ESE of Kamaishi, Japan3.9 km2011-06-29 18:21:31 UTCView event →
M 4.7236 km ESE of ?funato, Japan21.4 km2011-06-30 06:22:27 UTCView event →
M 4.8175 km ESE of Ishinomaki, Japan14.5 km2011-06-30 16:57:09 UTCView event →
M 4.8148 km ENE of Miyako, Japan30.0 km2011-06-30 21:47:59 UTCView event →
M 4.675 km ENE of Namie, Japan18.9 km2011-07-01 04:19:50 UTCView event →
M 4.650 km ESE of Kamaishi, Japan35.0 km2011-07-03 07:48:49 UTCView event →
M 4.7126 km ESE of Ishinomaki, Japan35.0 km2011-07-03 20:41:08 UTCView event →
M 4.9132 km ESE of Yamada, Japan43.4 km2011-07-03 21:47:23 UTCView event →
M 4.782 km NE of Miyako, Japan35.0 km2011-07-04 10:45:14 UTCView event →
M 4.770 km NNE of Miyako, Japan65.6 km2011-07-04 16:06:44 UTCView event →
M 4.7233 km ESE of Kamaishi, Japan35.0 km2011-07-05 06:39:04 UTCView event →
M 4.6157 km E of Namie, Japan34.4 km2011-07-06 00:29:01 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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