Explore clusters of M4.5+ events observed around significant earthquakes. These clusters are descriptive and are not presented as earthquake predictions.
After the M 6.8 reference event, Quake Pulse counts 16 M4+ event(s) in the first 24 hours and 17 in the first 7 days. Fourteen-day M4.5+ activity is about 38.2× 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.
28 Felt reports · PAGER GREEN · Tsunami indicator · Shallow
| Magnitude | Location | Depth | Time | |
|---|---|---|---|---|
| M 6.8 | 100 km SE of Nikolski, Alaska | 20.0 km | 2022-01-11 11:35:43 UTC | View event → |
| M 4.5 | 91 km SE of Nikolski, Alaska | 10.0 km | 2022-01-11 11:41:21 UTC | View event → |
| M 4.8 | 83 km SE of Nikolski, Alaska | 16.5 km | 2022-01-11 11:41:40 UTC | View event → |
| M 4.6 | 53 km ESE of Nikolski, Alaska | 26.2 km | 2022-01-11 11:42:12 UTC | View event → |
| M 5.4 | 88 km SE of Nikolski, Alaska | 17.0 km | 2022-01-11 11:45:53 UTC | View event → |
| M 4.7 | 93 km SE of Nikolski, Alaska | 22.3 km | 2022-01-11 11:54:04 UTC | View event → |
| M 4.7 | 81 km SE of Nikolski, Alaska | 8.6 km | 2022-01-11 12:37:51 UTC | View event → |
| M 6.6 | 53 km SE of Nikolski, Alaska | 19.0 km | 2022-01-11 12:39:32 UTC | View event → |
| M 4.7 | 81 km SE of Nikolski, Alaska | 24.8 km | 2022-01-11 12:49:05 UTC | View event → |
| M 5.8 | 82 km SE of Nikolski, Alaska | 16.7 km | 2022-01-11 12:53:45 UTC | View event → |
| M 5.3 | 95 km SE of Nikolski, Alaska | 15.2 km | 2022-01-11 12:55:18 UTC | View event → |
| M 4.7 | 75 km SE of Nikolski, Alaska | 20.5 km | 2022-01-11 13:22:53 UTC | View event → |
| M 4.7 | 81 km SE of Nikolski, Alaska | 10.0 km | 2022-01-11 14:43:25 UTC | View event → |
| M 4.8 | 92 km SE of Nikolski, Alaska | 10.0 km | 2022-01-11 15:27:13 UTC | View event → |
| M 4.9 | 95 km SE of Nikolski, Alaska | 10.0 km | 2022-01-11 18:18:13 UTC | View event → |
| M 4.6 | 96 km SE of Nikolski, Alaska | 10.0 km | 2022-01-11 22:15:41 UTC | View event → |
| M 4.7 | Fox Islands, Aleutian Islands, Alaska | 5.6 km | 2022-01-12 02:31:59 UTC | View event → |
| M 4.6 | 92 km SE of Nikolski, Alaska | 16.9 km | 2022-01-12 14:28:12 UTC | View event → |
| M 4.6 | 120 km W of Nikolski, Alaska | 121.5 km | 2022-01-20 17:23:30 UTC | View event → |
| M 6.2 | 71 km S of Unalaska, Alaska | 29.0 km | 2022-01-22 05:17:04 UTC | View event → |
| M 4.6 | 75 km SSW of Unalaska, Alaska | 35.0 km | 2022-01-22 05:19:05 UTC | View event → |
| M 4.6 | 83 km S of Unalaska, Alaska | 39.0 km | 2022-01-23 19:10:42 UTC | View event → |
| M 4.7 | Fox Islands, Aleutian Islands, Alaska | 43.6 km | 2022-01-24 06:09:21 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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