Explore clusters of M4.5+ events observed around significant earthquakes. These clusters are descriptive and are not presented as earthquake predictions.
After the M 6.1 reference event, Quake Pulse counts 2 M4+ event(s) in the first 24 hours and 3 in the first 7 days. Fourteen-day M4.5+ activity is about 1.6× the average equivalent derived from the previous year. The largest secondary event is M 1.4 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 6.1 | 147 km NNE of Hirara, Japan | 10.0 km | 2026-07-03 04:04:48 UTC | View event → |
| M 4.5 | 145 km NNE of Hirara, Japan | 10.0 km | 2026-07-03 07:33:10 UTC | View event → |
| M 4.5 | 146 km N of Hirara, Japan | 10.0 km | 2026-07-03 09:01:33 UTC | View event → |
| M 4.7 | 63 km NNW of Hirara, Japan | 97.9 km | 2026-07-09 16:21:43 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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