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 13 M4+ event(s) in the first 24 hours and 32 in the first 7 days. Fourteen-day M4.5+ activity is about 5.3× the average equivalent derived from the previous year. The largest secondary event is M 0.9 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.
259 Felt reports · PAGER YELLOW · Tsunami indicator · Shallow
| Magnitude | Location | Depth | Time | |
|---|---|---|---|---|
| M 7.6 | 2025 Aomori Prefecture, Japan Earthquake | 40.7 km | 2025-12-08 14:15:09 UTC | View event → |
| M 5.5 | 93 km ENE of Hachinohe, Japan | 35.0 km | 2025-12-08 14:33:39 UTC | View event → |
| M 5.0 | 132 km S of Honchō, Japan | 39.1 km | 2025-12-08 15:57:56 UTC | View event → |
| M 4.8 | 123 km S of Honchō, Japan | 44.9 km | 2025-12-08 17:58:28 UTC | View event → |
| M 6.0 | 127 km S of Honchō, Japan | 22.8 km | 2025-12-08 18:56:28 UTC | View event → |
| M 5.1 | 138 km S of Honchō, Japan | 31.3 km | 2025-12-08 19:01:10 UTC | View event → |
| M 4.6 | 128 km S of Honchō, Japan | 48.9 km | 2025-12-08 21:24:31 UTC | View event → |
| M 6.6 | 129 km S of Honchō, Japan | 19.0 km | 2025-12-08 21:52:41 UTC | View event → |
| M 5.0 | 112 km S of Honchō, Japan | 49.6 km | 2025-12-08 22:07:18 UTC | View event → |
| M 5.6 | 109 km NE of Kuji, Japan | 47.8 km | 2025-12-08 23:59:06 UTC | View event → |
| M 4.9 | 76 km E of Yokohama, Japan | 54.9 km | 2025-12-09 00:18:27 UTC | View event → |
| M 4.6 | 88 km S of Honchō, Japan | 52.9 km | 2025-12-09 05:15:51 UTC | View event → |
| M 5.0 | 89 km E of Mutsu, Japan | 60.1 km | 2025-12-09 09:09:47 UTC | View event → |
| M 4.5 | 106 km S of Honchō, Japan | 43.5 km | 2025-12-09 09:20:03 UTC | View event → |
| M 4.5 | 119 km ENE of Hachinohe, Japan | 49.3 km | 2025-12-09 22:20:05 UTC | View event → |
| M 4.6 | 98 km ENE of Yokohama, Japan | 53.8 km | 2025-12-09 23:04:36 UTC | View event → |
| M 4.5 | 113 km ENE of Misawa, Japan | 51.6 km | 2025-12-10 06:23:49 UTC | View event → |
| M 4.7 | 142 km E of Yamada, Japan | 10.0 km | 2025-12-10 10:55:12 UTC | View event → |
| M 4.5 | 97 km E of Yokohama, Japan | 50.8 km | 2025-12-10 14:01:30 UTC | View event → |
| M 5.7 | 108 km ENE of Hachinohe, Japan | 33.0 km | 2025-12-10 14:52:24 UTC | View event → |
| M 4.5 | 131 km NE of Kuji, Japan | 42.8 km | 2025-12-11 01:22:57 UTC | View event → |
| M 4.8 | 98 km SSW of Honchō, Japan | 43.1 km | 2025-12-11 18:11:05 UTC | View event → |
| M 5.0 | 111 km S of Honchō, Japan | 29.0 km | 2025-12-11 22:09:19 UTC | View event → |
| M 6.7 | 117 km NE of Kuji, Japan | 19.0 km | 2025-12-12 02:44:12 UTC | View event → |
| M 4.6 | 126 km NE of Kuji, Japan | 35.0 km | 2025-12-12 03:06:35 UTC | View event → |
| M 5.3 | 125 km S of Honchō, Japan | 32.6 km | 2025-12-12 03:21:39 UTC | View event → |
| M 4.7 | 131 km S of Honchō, Japan | 38.9 km | 2025-12-12 03:26:12 UTC | View event → |
| M 4.6 | 126 km NE of Kuji, Japan | 35.0 km | 2025-12-12 04:58:22 UTC | View event → |
| M 4.6 | 106 km E of Yokohama, Japan | 60.7 km | 2025-12-12 07:55:43 UTC | View event → |
| M 4.6 | 76 km ENE of Misawa, Japan | 66.8 km | 2025-12-13 05:59:44 UTC | View event → |
| M 4.5 | 166 km ENE of Noda, Japan | 31.8 km | 2025-12-13 21:49:37 UTC | View event → |
| M 5.0 | 145 km E of Miyako, Japan | 10.0 km | 2025-12-14 07:58:11 UTC | View event → |
| M 4.7 | 106 km SSW of Honchō, Japan | 45.7 km | 2025-12-14 18:09:28 UTC | View event → |
| M 4.5 | 29 km S of Ōfunato, Japan | 94.3 km | 2025-12-16 02:45:35 UTC | View event → |
| M 5.1 | 133 km S of Honchō, Japan | 35.0 km | 2025-12-16 05:38:51 UTC | View event → |
| M 5.0 | 94 km E of Mutsu, Japan | 52.0 km | 2025-12-17 09:50:18 UTC | View event → |
| M 4.6 | 96 km ENE of Miyako, Japan | 42.2 km | 2025-12-18 00:50:42 UTC | View event → |
| M 4.6 | 100 km E of Miyako, Japan | 41.6 km | 2025-12-18 05:20:11 UTC | View event → |
| M 4.7 | 113 km E of Miyako, Japan | 36.2 km | 2025-12-19 21:40:07 UTC | View event → |
| M 5.2 | 78 km SSE of Nemuro, Japan | 10.0 km | 2025-12-20 12:30:27 UTC | View event → |
| M 4.8 | 75 km SE of Nemuro, Japan | 30.4 km | 2025-12-20 12:33:54 UTC | View event → |
| M 5.2 | 70 km SSE of Nemuro, Japan | 35.0 km | 2025-12-20 12:58:54 UTC | View event → |
| M 5.4 | 57 km ENE of Misawa, Japan | 57.2 km | 2025-12-21 01:29:03 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.
Magnitude is only one part of the story. Depth, distance, local ground conditions and building vulnerability help explain why shaking can differ so much from one earthquake to another.
Read article →
Earthquake-resistant design is not about making buildings immovable. It is about controlling forces, deformation and failure so people have a much better chance of staying safe.
Read article →
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.
Read article →
