Explore clusters of M4.5+ events observed around significant earthquakes. These clusters are descriptive and are not presented as earthquake predictions.
After the M 7.6 reference event, Quake Pulse counts 11 M4+ event(s) in the first 24 hours and 20 in the first 7 days. Fourteen-day M4.5+ activity is about 46.0× the average equivalent derived from the previous year. The largest secondary event is M 1.9 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.
Shallow
| Magnitude | Location | Depth | Time | |
|---|---|---|---|---|
| M 7.6 | Carlsberg Ridge | 10.0 km | 2003-07-15 20:27:50 UTC | View event → |
| M 5.4 | Carlsberg Ridge | 10.0 km | 2003-07-15 20:36:25 UTC | View event → |
| M 4.7 | Carlsberg Ridge | 10.0 km | 2003-07-15 20:59:40 UTC | View event → |
| M 4.9 | Carlsberg Ridge | 10.0 km | 2003-07-15 21:09:50 UTC | View event → |
| M 4.7 | Carlsberg Ridge | 10.0 km | 2003-07-15 21:14:44 UTC | View event → |
| M 4.9 | Carlsberg Ridge | 10.0 km | 2003-07-15 21:42:25 UTC | View event → |
| M 5.1 | Carlsberg Ridge | 10.0 km | 2003-07-15 21:54:41 UTC | View event → |
| M 4.9 | Carlsberg Ridge | 10.0 km | 2003-07-16 01:24:13 UTC | View event → |
| M 5.6 | Carlsberg Ridge | 10.0 km | 2003-07-16 02:29:48 UTC | View event → |
| M 4.9 | Carlsberg Ridge | 10.0 km | 2003-07-16 03:16:39 UTC | View event → |
| M 4.5 | Carlsberg Ridge | 10.0 km | 2003-07-16 03:25:53 UTC | View event → |
| M 4.5 | Carlsberg Ridge | 10.0 km | 2003-07-16 04:46:34 UTC | View event → |
| M 4.7 | Carlsberg Ridge | 10.0 km | 2003-07-17 12:28:39 UTC | View event → |
| M 4.9 | Carlsberg Ridge | 10.0 km | 2003-07-18 04:21:03 UTC | View event → |
| M 4.6 | Carlsberg Ridge | 10.0 km | 2003-07-19 07:30:16 UTC | View event → |
| M 4.6 | Carlsberg Ridge | 10.0 km | 2003-07-21 04:26:13 UTC | View event → |
| M 5.1 | Carlsberg Ridge | 10.0 km | 2003-07-21 05:59:43 UTC | View event → |
| M 4.7 | Carlsberg Ridge | 10.0 km | 2003-07-21 23:08:40 UTC | View event → |
| M 4.5 | Carlsberg Ridge | 10.0 km | 2003-07-22 15:38:19 UTC | View event → |
| M 4.6 | Carlsberg Ridge | 10.0 km | 2003-07-22 16:49:02 UTC | View event → |
| M 4.8 | Carlsberg Ridge | 10.0 km | 2003-07-22 17:29:20 UTC | View event → |
| M 4.8 | Carlsberg Ridge | 10.0 km | 2003-07-26 14:34:08 UTC | View event → |
| M 5.4 | Carlsberg Ridge | 10.0 km | 2003-07-27 22:50:25 UTC | View event → |
| M 5.7 | Carlsberg Ridge | 10.0 km | 2003-07-28 03:28:41 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.
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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.
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