Explore clusters of M4.5+ events observed around significant earthquakes. These clusters are descriptive and are not presented as earthquake predictions.
After the M 7.8 reference event, Quake Pulse counts 36 M4+ event(s) in the first 24 hours and 64 in the first 7 days. Fourteen-day M4.5+ activity is about 138.0× the average equivalent derived from the previous year. The largest secondary event is M 2.1 below the reference event.
Descriptive comparison with M4.5+ events observed in the same radius during the 365 days before the sequence.
A ratio above 1 means denser M4.5+ activity than the average equivalent derived from the previous 365 days. It is not a risk measure or a forecast.
Earlier events are shown as context only. They are not labelled precursors and should not be interpreted as predictive signals.
Shows M4+ cluster events according to elapsed time after the reference event.
Dots represent M4+ events retained by the sequence detector. Dot size depends on magnitude.
Sequences are descriptive groupings based on spatial and temporal proximity. Quake Pulse does not establish a causal link between every event here and does not provide earthquake forecasts.
363 Felt reports · Shallow
| Magnitude | Location | Depth | Time | |
|---|---|---|---|---|
| M 7.8 | 97 km WSW of Te Anau, New Zealand | 12.0 km | 2009-07-15 09:22:29 UTC | View event → |
| M 5.7 | 154 km WSW of Te Anau, New Zealand | 12.0 km | 2009-07-15 09:41:53 UTC | View event → |
| M 5.0 | 172 km W of Riverton, New Zealand | 12.8 km | 2009-07-15 09:52:16 UTC | View event → |
| M 5.3 | 105 km WSW of Te Anau, New Zealand | 5.0 km | 2009-07-15 10:01:49 UTC | View event → |
| M 4.6 | 156 km W of Riverton, New Zealand | 19.3 km | 2009-07-15 10:21:33 UTC | View event → |
| M 4.8 | 78 km WSW of Te Anau, New Zealand | 12.0 km | 2009-07-15 10:32:46 UTC | View event → |
| M 5.0 | 146 km WSW of Te Anau, New Zealand | 10.0 km | 2009-07-15 10:36:40 UTC | View event → |
| M 4.5 | 97 km W of Te Anau, New Zealand | 10.0 km | 2009-07-15 11:17:16 UTC | View event → |
| M 4.8 | 69 km W of Te Anau, New Zealand | 13.5 km | 2009-07-15 11:21:55 UTC | View event → |
| M 4.5 | 128 km WSW of Te Anau, New Zealand | 10.0 km | 2009-07-15 11:27:48 UTC | View event → |
| M 4.8 | 82 km WNW of Riverton, New Zealand | 12.0 km | 2009-07-15 11:31:29 UTC | View event → |
| M 4.6 | 89 km W of Te Anau, New Zealand | 10.0 km | 2009-07-15 11:35:42 UTC | View event → |
| M 5.2 | 93 km W of Te Anau, New Zealand | 12.0 km | 2009-07-15 11:44:13 UTC | View event → |
| M 4.9 | 77 km SW of Te Anau, New Zealand | 5.0 km | 2009-07-15 11:49:42 UTC | View event → |
| M 4.7 | 86 km W of Te Anau, New Zealand | 4.4 km | 2009-07-15 12:09:25 UTC | View event → |
| M 4.6 | 153 km WSW of Te Anau, New Zealand | 10.0 km | 2009-07-15 13:45:21 UTC | View event → |
| M 5.4 | 95 km W of Te Anau, New Zealand | 5.0 km | 2009-07-15 13:50:38 UTC | View event → |
| M 4.9 | 150 km WSW of Te Anau, New Zealand | 10.0 km | 2009-07-15 14:15:26 UTC | View event → |
| M 4.6 | 84 km W of Te Anau, New Zealand | 5.0 km | 2009-07-15 16:17:29 UTC | View event → |
| M 4.9 | 116 km W of Te Anau, New Zealand | 10.0 km | 2009-07-15 16:19:22 UTC | View event → |
| M 4.7 | 117 km WSW of Te Anau, New Zealand | 12.0 km | 2009-07-15 16:51:21 UTC | View event → |
| M 4.5 | 93 km W of Te Anau, New Zealand | 6.7 km | 2009-07-15 16:55:12 UTC | View event → |
| M 4.6 | 95 km WSW of Te Anau, New Zealand | 5.0 km | 2009-07-15 19:27:51 UTC | View event → |
| M 4.8 | 163 km W of Riverton, New Zealand | 12.0 km | 2009-07-15 20:45:24 UTC | View event → |
| M 4.5 | 125 km WSW of Te Anau, New Zealand | 5.0 km | 2009-07-15 20:59:27 UTC | View event → |
| M 5.4 | 159 km W of Riverton, New Zealand | 12.0 km | 2009-07-15 21:36:00 UTC | View event → |
| M 4.7 | 87 km WSW of Te Anau, New Zealand | 12.0 km | 2009-07-15 23:14:26 UTC | View event → |
| M 4.9 | 54 km WSW of Te Anau, New Zealand | 65.0 km | 2009-07-15 23:41:20 UTC | View event → |
| M 5.2 | 144 km W of Riverton, New Zealand | 5.0 km | 2009-07-16 00:24:07 UTC | View event → |
| M 4.7 | 165 km W of Riverton, New Zealand | 12.0 km | 2009-07-16 00:39:11 UTC | View event → |
| M 5.3 | 165 km W of Riverton, New Zealand | 5.0 km | 2009-07-16 00:44:46 UTC | View event → |
| M 4.9 | 99 km WSW of Te Anau, New Zealand | 5.0 km | 2009-07-16 02:07:33 UTC | View event → |
| M 4.6 | 75 km W of Te Anau, New Zealand | 12.0 km | 2009-07-16 02:13:09 UTC | View event → |
| M 5.2 | 184 km W of Riverton, New Zealand | 12.0 km | 2009-07-16 03:19:08 UTC | View event → |
| M 4.5 | 93 km WSW of Te Anau, New Zealand | 12.0 km | 2009-07-16 05:35:55 UTC | View event → |
| M 4.8 | 154 km W of Riverton, New Zealand | 15.9 km | 2009-07-16 05:47:56 UTC | View event → |
| M 4.7 | 96 km WSW of Te Anau, New Zealand | 5.0 km | 2009-07-16 06:30:01 UTC | View event → |
| M 4.5 | 172 km W of Riverton, New Zealand | 12.0 km | 2009-07-16 13:14:00 UTC | View event → |
| M 4.9 | 149 km W of Riverton, New Zealand | 30.0 km | 2009-07-16 16:13:45 UTC | View event → |
| M 5.0 | 92 km W of Te Anau, New Zealand | 12.0 km | 2009-07-16 17:27:40 UTC | View event → |
| M 5.7 | 146 km W of Riverton, New Zealand | 30.4 km | 2009-07-16 22:18:23 UTC | View event → |
| M 5.0 | 130 km W of Riverton, New Zealand | 12.0 km | 2009-07-16 23:01:08 UTC | View event → |
| M 4.7 | 102 km WSW of Te Anau, New Zealand | 12.0 km | 2009-07-17 00:13:07 UTC | View event → |
| M 4.5 | 147 km WSW of Te Anau, New Zealand | 11.9 km | 2009-07-17 01:02:25 UTC | View event → |
| M 4.6 | 158 km WSW of Te Anau, New Zealand | 5.1 km | 2009-07-17 01:03:57 UTC | View event → |
| M 4.8 | 82 km W of Te Anau, New Zealand | 8.4 km | 2009-07-17 01:20:04 UTC | View event → |
| M 4.7 | 160 km W of Riverton, New Zealand | 18.2 km | 2009-07-17 03:39:24 UTC | View event → |
| M 4.8 | 81 km W of Te Anau, New Zealand | 11.7 km | 2009-07-17 06:32:46 UTC | View event → |
| M 5.2 | 92 km W of Te Anau, New Zealand | 5.0 km | 2009-07-17 06:39:23 UTC | View event → |
| M 4.5 | 89 km W of Te Anau, New Zealand | 4.8 km | 2009-07-17 07:52:31 UTC | View event → |
| M 4.5 | 148 km WSW of Te Anau, New Zealand | 12.0 km | 2009-07-17 12:34:04 UTC | View event → |
| M 5.1 | 178 km W of Riverton, New Zealand | 11.8 km | 2009-07-17 16:40:03 UTC | View event → |
| M 4.5 | 83 km W of Te Anau, New Zealand | 9.6 km | 2009-07-17 20:25:08 UTC | View event → |
| M 4.9 | 83 km W of Te Anau, New Zealand | 7.9 km | 2009-07-18 00:57:24 UTC | View event → |
| M 4.8 | 83 km W of Te Anau, New Zealand | 12.4 km | 2009-07-18 01:25:04 UTC | View event → |
| M 4.6 | 115 km WSW of Te Anau, New Zealand | 12.0 km | 2009-07-18 09:16:17 UTC | View event → |
| M 4.5 | 95 km WSW of Te Anau, New Zealand | 6.5 km | 2009-07-18 11:12:42 UTC | View event → |
| M 5.1 | 85 km W of Te Anau, New Zealand | 7.8 km | 2009-07-18 15:33:46 UTC | View event → |
| M 4.5 | 83 km W of Te Anau, New Zealand | 8.2 km | 2009-07-18 17:35:35 UTC | View event → |
| M 5.4 | 126 km W of Te Anau, New Zealand | 5.0 km | 2009-07-19 05:11:32 UTC | View event → |
| M 5.2 | 112 km W of Te Anau, New Zealand | 12.0 km | 2009-07-19 08:48:45 UTC | View event → |
| M 4.5 | 106 km WSW of Te Anau, New Zealand | 5.0 km | 2009-07-20 07:04:38 UTC | View event → |
| M 4.5 | 125 km WSW of Te Anau, New Zealand | 12.0 km | 2009-07-21 02:45:00 UTC | View event → |
| M 4.5 | 175 km W of Riverton, New Zealand | 33.0 km | 2009-07-22 06:14:04 UTC | View event → |
| M 4.6 | 88 km W of Te Anau, New Zealand | 5.0 km | 2009-07-22 09:01:12 UTC | View event → |
| M 4.7 | 75 km W of Te Anau, New Zealand | 12.0 km | 2009-07-24 13:28:40 UTC | View event → |
| M 4.5 | 158 km W of Riverton, New Zealand | 12.0 km | 2009-07-26 03:51:11 UTC | View event → |
| M 4.6 | 119 km SW of Te Anau, New Zealand | 12.0 km | 2009-07-26 19:37:37 UTC | View event → |
| M 4.7 | 90 km W of Te Anau, New Zealand | 12.6 km | 2009-07-27 18:02:48 UTC | View event → |
| M 4.5 | 121 km WSW of Te Anau, New Zealand | 15.7 km | 2009-07-29 08:15:05 UTC | View event → |
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.
Guides, explainers and practical reading to go beyond the live data.
Magnitude is only one part of the story. Depth, distance, local ground conditions and building vulnerability help explain why shaking can differ so much from one earthquake to another.
Read article →
Earthquake-resistant design is not about making buildings immovable. It is about controlling forces, deformation and failure so people have a much better chance of staying safe.
Read article →
Early-warning systems detect an earthquake after it starts and try to send an alert before the strongest shaking arrives. The difference between warning and prediction matters.
Read article →
