Explore clusters of M4.5+ events observed around significant earthquakes. These clusters are descriptive and are not presented as earthquake predictions.
After the M 6.0 reference event, Quake Pulse counts 3 M4+ event(s) in the first 24 hours and 8 in the first 7 days. Fourteen-day M4.5+ activity is about 7.1× the average equivalent derived from the previous year. The largest secondary event is M 0.2 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.
1 Felt reports · PAGER GREEN · Shallow
| Magnitude | Location | Depth | Time | |
|---|---|---|---|---|
| M 6.0 | 78 km S of Kushiro, Japan | 21.0 km | 2025-05-31 08:37:17 UTC | View event → |
| M 4.5 | 78 km SSE of Kushiro, Japan | 35.0 km | 2025-05-31 08:49:49 UTC | View event → |
| M 4.8 | 68 km S of Kushiro, Japan | 48.6 km | 2025-05-31 11:37:06 UTC | View event → |
| M 4.8 | 79 km S of Kushiro, Japan | 35.5 km | 2025-05-31 12:29:02 UTC | View event → |
| M 5.8 | 68 km SSE of Hiroo, Japan | 27.0 km | 2025-06-01 18:51:52 UTC | View event → |
| M 4.7 | 60 km SSE of Hiroo, Japan | 37.3 km | 2025-06-01 19:08:34 UTC | View event → |
| M 5.1 | 57 km SSE of Hiroo, Japan | 42.8 km | 2025-06-03 13:18:28 UTC | View event → |
| M 4.5 | 77 km SSE of Kushiro, Japan | 41.9 km | 2025-06-04 19:55:19 UTC | View event → |
| M 4.5 | 98 km ENE of Yokohama, Japan | 54.6 km | 2025-06-07 05:40:19 UTC | View event → |
| M 4.6 | 75 km S of Kushiro, Japan | 37.6 km | 2025-06-11 09:30:42 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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