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Sequence · 2003-08-21

M 7.2 · Observed seismic cluster · 56 km NW of Te Anau, New Zealand

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 cluster32
M6+1
Analysis radius372 km
Observation window14 days
Largest secondary eventM 5.9
Quake Pulse

Sequence timeline

Within first 24 hours15
Within first 7 days28
Observed duration13.9 d
Gap from reference eventM 1.3
0 h13.9 d
Quake Pulse

Main-event impact

Shallow

54/100
Impact and context →

M4.5+ events in cluster

MagnitudeLocationDepthTime
M 7.256 km NW of Te Anau, New Zealand28.0 km2003-08-21 12:12:49 UTCView event →
M 5.125 km NNW of Te Anau, New Zealand12.0 km2003-08-21 12:29:02 UTCView event →
M 5.363 km WNW of Te Anau, New Zealand23.0 km2003-08-21 12:41:48 UTCView event →
M 5.756 km NW of Te Anau, New Zealand33.0 km2003-08-21 12:45:40 UTCView event →
M 5.164 km W of Te Anau, New Zealand26.0 km2003-08-21 13:03:22 UTCView event →
M 4.570 km WNW of Te Anau, New Zealand12.0 km2003-08-21 13:12:39 UTCView event →
M 5.953 km W of Te Anau, New Zealand33.0 km2003-08-21 14:12:27 UTCView event →
M 5.066 km NW of Te Anau, New Zealand25.0 km2003-08-21 14:46:26 UTCView event →
M 4.668 km WNW of Te Anau, New Zealand12.0 km2003-08-21 15:05:26 UTCView event →
M 4.665 km NW of Te Anau, New Zealand21.0 km2003-08-21 16:50:04 UTCView event →
M 5.172 km W of Te Anau, New Zealand23.0 km2003-08-21 17:55:43 UTCView event →
M 5.071 km WNW of Te Anau, New Zealand33.0 km2003-08-21 19:56:22 UTCView event →
M 4.963 km WNW of Te Anau, New Zealand12.0 km2003-08-21 20:22:13 UTCView event →
M 4.969 km WNW of Te Anau, New Zealand24.0 km2003-08-22 00:02:22 UTCView event →
M 4.966 km NW of Te Anau, New Zealand12.0 km2003-08-22 03:22:55 UTCView event →
M 4.766 km WNW of Te Anau, New Zealand12.0 km2003-08-22 14:00:27 UTCView event →
M 4.570 km W of Te Anau, New Zealand24.0 km2003-08-22 15:08:40 UTCView event →
M 5.166 km WNW of Te Anau, New Zealand24.0 km2003-08-22 15:29:32 UTCView event →
M 4.568 km W of Te Anau, New Zealand25.0 km2003-08-22 17:23:22 UTCView event →
M 4.769 km W of Te Anau, New Zealand24.0 km2003-08-22 18:51:01 UTCView event →
M 4.566 km W of Te Anau, New Zealand27.0 km2003-08-23 07:00:59 UTCView event →
M 5.164 km WNW of Te Anau, New Zealand33.0 km2003-08-23 09:13:53 UTCView event →
M 4.7106 km WNW of Te Anau, New Zealand12.0 km2003-08-23 20:08:30 UTCView event →
M 4.6off the west coast of the South Island of New Zealand12.0 km2003-08-24 12:05:22 UTCView event →
M 4.585 km NW of Te Anau, New Zealand10.0 km2003-08-24 16:52:25 UTCView event →
M 4.569 km NW of Te Anau, New Zealand33.0 km2003-08-25 03:36:30 UTCView event →
M 5.571 km W of Te Anau, New Zealand43.5 km2003-08-26 23:56:29 UTCView event →
M 4.663 km W of Te Anau, New Zealand25.0 km2003-08-27 01:42:54 UTCView event →
M 4.668 km W of Te Anau, New Zealand25.0 km2003-08-28 15:07:58 UTCView event →
M 5.553 km WNW of Te Anau, New Zealand33.0 km2003-09-04 08:40:44 UTCView event →
M 4.679 km WNW of Te Anau, New Zealand25.0 km2003-09-04 09:29:51 UTCView event →
M 4.962 km W of Te Anau, New Zealand27.0 km2003-09-04 10:49:24 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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