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Sequence · 2008-06-13

M 6.9 · Observed seismic cluster · 24 km WSW of Mizusawa, 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 cluster25
M6+1
Analysis radius324 km
Observation window14 days
Largest secondary eventM 5.5
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Sequence timeline

Within first 24 hours22
Within first 7 days24
Observed duration12.6 d
Gap from reference eventM 1.4
0 h12.6 d
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Main-event impact

213 Felt reports · Shallow

63/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 6.924 km WSW of Mizusawa, Japan7.8 km2008-06-13 23:43:45 UTCView event →
M 5.116 km W of Mizusawa, Japan11.5 km2008-06-13 23:49:05 UTCView event →
M 4.514 km WSW of Mizusawa, Japan10.3 km2008-06-13 23:53:10 UTCView event →
M 4.914 km W of Mizusawa, Japan12.1 km2008-06-13 23:56:45 UTCView event →
M 4.718 km W of Mizusawa, Japan11.4 km2008-06-14 00:00:35 UTCView event →
M 4.522 km W of Ichinoseki, Japan7.7 km2008-06-14 00:01:43 UTCView event →
M 4.526 km WNW of Ichinoseki, Japan10.9 km2008-06-14 00:06:22 UTCView event →
M 4.821 km W of Mizusawa, Japan11.3 km2008-06-14 00:07:20 UTCView event →
M 4.529 km WSW of Ichinoseki, Japan5.0 km2008-06-14 00:08:01 UTCView event →
M 4.717 km W of Mizusawa, Japan10.8 km2008-06-14 00:18:13 UTCView event →
M 5.535 km SSE of Yuzawa, Japan6.4 km2008-06-14 00:20:11 UTCView event →
M 5.427 km WSW of Mizusawa, Japan10.2 km2008-06-14 00:20:47 UTCView event →
M 4.534 km W of Ichinoseki, Japan6.9 km2008-06-14 00:30:48 UTCView event →
M 4.820 km WSW of Mizusawa, Japan12.9 km2008-06-14 00:52:42 UTCView event →
M 4.722 km WSW of Mizusawa, Japan12.2 km2008-06-14 01:00:16 UTCView event →
M 4.816 km WSW of Mizusawa, Japan11.8 km2008-06-14 01:39:47 UTCView event →
M 4.624 km WNW of Ichinoseki, Japan9.6 km2008-06-14 02:35:16 UTCView event →
M 4.723 km W of Mizusawa, Japan8.8 km2008-06-14 03:10:31 UTCView event →
M 4.916 km W of Mizusawa, Japan10.8 km2008-06-14 03:27:32 UTCView event →
M 4.7eastern Honshu, Japan10.0 km2008-06-14 05:39:17 UTCView event →
M 4.619 km W of Mizusawa, Japan11.5 km2008-06-14 12:48:28 UTCView event →
M 4.822 km WNW of Ichinoseki, Japan10.0 km2008-06-14 14:42:32 UTCView event →
M 5.126 km WNW of Ichinoseki, Japan10.8 km2008-06-16 14:14:38 UTCView event →
M 4.516 km W of Mizusawa, Japan11.0 km2008-06-16 19:05:03 UTCView event →
M 4.523 km NE of Obanazawa, Japan35.0 km2008-06-26 14:34:04 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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