Explore clusters of M4.5+ events observed around significant earthquakes. These clusters are descriptive and are not presented as earthquake predictions.
After the M 7.5 reference event, Quake Pulse counts 10 M4+ event(s) in the first 24 hours and 15 in the first 7 days. Fourteen-day M4.5+ activity is about 4.6× the average equivalent derived from the previous year. The largest secondary event is M 2.3 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.
15 Felt reports · PAGER GREEN · Tsunami indicator · Shallow
| Magnitude | Location | Depth | Time | |
|---|---|---|---|---|
| M 7.5 | 2025 Southern Drake Passage Earthquake | 10.0 km | 2025-08-22 02:16:18 UTC | View event → |
| M 4.9 | Drake Passage | 10.0 km | 2025-08-22 02:33:23 UTC | View event → |
| M 4.6 | Drake Passage | 10.0 km | 2025-08-22 03:08:44 UTC | View event → |
| M 4.8 | Drake Passage | 10.0 km | 2025-08-22 03:14:13 UTC | View event → |
| M 5.1 | Drake Passage | 10.0 km | 2025-08-22 03:17:24 UTC | View event → |
| M 4.6 | Drake Passage | 10.0 km | 2025-08-22 03:54:07 UTC | View event → |
| M 5.1 | Drake Passage | 10.0 km | 2025-08-22 05:18:54 UTC | View event → |
| M 4.5 | Drake Passage | 10.0 km | 2025-08-22 08:19:37 UTC | View event → |
| M 4.7 | Drake Passage | 10.0 km | 2025-08-22 13:15:32 UTC | View event → |
| M 4.9 | Drake Passage | 10.0 km | 2025-08-22 15:05:58 UTC | View event → |
| M 4.7 | 270 km SSE of Ushuaia, Argentina | 10.0 km | 2025-08-22 17:31:23 UTC | View event → |
| M 4.8 | Drake Passage | 10.0 km | 2025-08-23 14:34:30 UTC | View event → |
| M 5.0 | Drake Passage | 10.0 km | 2025-08-23 18:52:51 UTC | View event → |
| M 4.8 | Drake Passage | 10.0 km | 2025-08-24 15:45:38 UTC | View event → |
| M 5.2 | Drake Passage | 10.0 km | 2025-08-27 00:04:37 UTC | View event → |
| M 4.5 | Drake Passage | 10.0 km | 2025-08-28 18:58:40 UTC | View event → |
| M 4.9 | Drake Passage | 10.0 km | 2025-09-03 07:34:26 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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