Explore clusters of M4.5+ events observed around significant earthquakes. These clusters are descriptive and are not presented as earthquake predictions.
After the M 6.2 reference event, Quake Pulse counts 7 M4+ event(s) in the first 24 hours and 14 in the first 7 days. Fourteen-day M4.5+ activity is about 3.3× the average equivalent derived from the previous year. The largest secondary event is M 0.3 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.
PAGER GREEN · Shallow
| Magnitude | Location | Depth | Time | |
|---|---|---|---|---|
| M 6.2 | 72 km SSE of Pangai, Tonga | 17.0 km | 2025-03-30 15:04:54 UTC | View event → |
| M 5.0 | 98 km SE of Pangai, Tonga | 10.0 km | 2025-03-30 15:26:13 UTC | View event → |
| M 5.9 | 53 km SSE of Pangai, Tonga | 27.1 km | 2025-03-30 15:33:49 UTC | View event → |
| M 4.8 | 51 km SSE of Pangai, Tonga | 10.0 km | 2025-03-30 16:10:08 UTC | View event → |
| M 4.6 | 91 km SE of Pangai, Tonga | 24.0 km | 2025-03-30 19:30:25 UTC | View event → |
| M 5.2 | 63 km SE of Pangai, Tonga | 10.0 km | 2025-03-30 21:51:41 UTC | View event → |
| M 4.7 | 100 km SE of Pangai, Tonga | 10.0 km | 2025-03-31 00:23:58 UTC | View event → |
| M 4.9 | 103 km SSE of Pangai, Tonga | 10.0 km | 2025-03-31 13:20:43 UTC | View event → |
| M 4.9 | 115 km SE of Pangai, Tonga | 10.0 km | 2025-03-31 22:25:56 UTC | View event → |
| M 4.7 | 68 km SE of Pangai, Tonga | 14.0 km | 2025-04-01 07:37:26 UTC | View event → |
| M 4.9 | 90 km SE of Pangai, Tonga | 10.0 km | 2025-04-02 00:59:30 UTC | View event → |
| M 4.5 | 31 km NE of Fangale’ounga, Tonga | 10.0 km | 2025-04-04 12:41:47 UTC | View event → |
| M 4.8 | 115 km SE of ‘Ohonua, Tonga | 10.0 km | 2025-04-05 01:57:03 UTC | View event → |
| M 4.5 | 122 km SE of Pangai, Tonga | 10.0 km | 2025-04-05 04:19:07 UTC | View event → |
| M 5.1 | 92 km ESE of Fangale’ounga, Tonga | 10.0 km | 2025-04-05 09:19:55 UTC | View event → |
| M 4.5 | 72 km SE of Pangai, Tonga | 10.0 km | 2025-04-11 20:59:57 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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