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Sequence · 2007-12-19

M 7.2 · Observed seismic cluster · 207 km WSW of Adak, Alaska

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 cluster30
M6+2
Analysis radius372 km
Observation window14 days
Largest secondary eventM 6.3
Quake Pulse

Sequence timeline

Within first 24 hours22
Within first 7 days28
Observed duration13.7 d
Gap from reference eventM 0.9
0 h13.7 d
Quake Pulse

Main-event impact

5 Felt reports · Shallow

52/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 7.2207 km WSW of Adak, Alaska34.0 km2007-12-19 09:30:27 UTCView event →
M 5.6211 km WSW of Adak, Alaska15.9 km2007-12-19 09:35:16 UTCView event →
M 5.4202 km WSW of Adak, Alaska47.0 km2007-12-19 09:44:21 UTCView event →
M 5.3203 km WSW of Adak, Alaska30.0 km2007-12-19 09:46:48 UTCView event →
M 5.4201 km WSW of Adak, Alaska30.0 km2007-12-19 09:47:09 UTCView event →
M 4.9200 km WSW of Adak, Alaska30.0 km2007-12-19 09:55:05 UTCView event →
M 5.1208 km WSW of Adak, Alaska30.0 km2007-12-19 10:01:01 UTCView event →
M 4.6210 km WSW of Adak, Alaska29.7 km2007-12-19 10:05:16 UTCView event →
M 4.9208 km WSW of Adak, Alaska30.0 km2007-12-19 10:05:35 UTCView event →
M 5.3189 km WSW of Adak, Alaska30.0 km2007-12-19 10:24:13 UTCView event →
M 5.5206 km WSW of Adak, Alaska30.0 km2007-12-19 10:24:33 UTCView event →
M 4.8180 km WSW of Adak, Alaska30.0 km2007-12-19 11:15:23 UTCView event →
M 4.8199 km WSW of Adak, Alaska30.0 km2007-12-19 11:46:41 UTCView event →
M 4.6161 km WSW of Adak, Alaska20.5 km2007-12-19 12:30:29 UTCView event →
M 5.4206 km WSW of Adak, Alaska12.4 km2007-12-19 12:30:47 UTCView event →
M 4.7210 km WSW of Adak, Alaska30.0 km2007-12-19 12:35:35 UTCView event →
M 4.6199 km WSW of Adak, Alaska56.3 km2007-12-19 13:04:21 UTCView event →
M 4.8200 km WSW of Adak, Alaska54.2 km2007-12-19 14:04:42 UTCView event →
M 5.6207 km WSW of Adak, Alaska60.3 km2007-12-19 14:51:39 UTCView event →
M 4.9196 km WSW of Adak, Alaska19.9 km2007-12-19 18:16:56 UTCView event →
M 4.7202 km WSW of Adak, Alaska19.7 km2007-12-19 20:51:19 UTCView event →
M 5.0189 km WSW of Adak, Alaska14.7 km2007-12-20 02:18:20 UTCView event →
M 4.9183 km WSW of Adak, Alaska49.0 km2007-12-20 16:55:54 UTCView event →
M 5.7178 km WSW of Adak, Alaska30.0 km2007-12-21 07:23:35 UTCView event →
M 6.3171 km WSW of Adak, Alaska25.0 km2007-12-21 07:24:34 UTCView event →
M 4.9198 km WSW of Adak, Alaska30.0 km2007-12-21 15:03:25 UTCView event →
M 4.6188 km WSW of Adak, Alaska59.5 km2007-12-21 15:16:33 UTCView event →
M 4.7Andreanof Islands, Aleutian Islands, Alaska30.0 km2007-12-22 13:43:13 UTCView event →
M 4.6203 km WSW of Adak, Alaska15.5 km2007-12-27 17:42:43 UTCView event →
M 4.7244 km WSW of Adak, Alaska24.2 km2008-01-02 01:28:44 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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