Explore earthquake activity year by year and month by month using the historical Quake Pulse database.
| Magnitude | Location | Depth | Time | |
|---|---|---|---|---|
| M 5.8 | 280 km SW of Vaini, Tonga | 157.0 km | 2021-08-17 17:24:49 UTC | View event → |
| M 5.6 | 127 km SSE of ‘Ohonua, Tonga | 10.0 km | 2021-08-14 09:50:13 UTC | View event → |
| M 5.2 | 99 km E of Neiafu, Tonga | 10.0 km | 2021-08-29 08:50:42 UTC | View event → |
| M 5.1 | 161 km SE of Pangai, Tonga | 10.0 km | 2021-08-19 11:48:17 UTC | View event → |
| M 5.0 | 113 km SSE of ‘Ohonua, Tonga | 10.0 km | 2021-08-19 20:45:33 UTC | View event → |
| M 5.0 | south of Tonga | 10.0 km | 2021-08-13 20:39:00 UTC | View event → |
| M 5.0 | 102 km SSE of Hihifo, Tonga | 35.0 km | 2021-08-07 23:16:21 UTC | View event → |
| M 4.9 | 108 km NE of Hihifo, Tonga | 10.0 km | 2021-08-28 17:08:52 UTC | View event → |
| M 4.9 | 125 km N of Neiafu, Tonga | 56.5 km | 2021-08-17 07:54:32 UTC | View event → |
| M 4.9 | 53 km NE of Hihifo, Tonga | 78.0 km | 2021-08-08 23:41:19 UTC | View event → |
| M 4.8 | 158 km SSE of ‘Ohonua, Tonga | 10.0 km | 2021-08-23 04:34:36 UTC | View event → |
| M 4.8 | 98 km NE of Hihifo, Tonga | 10.0 km | 2021-08-06 19:13:11 UTC | View event → |
| M 4.8 | 189 km NE of Neiafu, Tonga | 10.0 km | 2021-08-04 01:41:31 UTC | View event → |
| M 4.7 | 232 km SE of Hihifo, Tonga | 10.0 km | 2021-08-31 02:41:50 UTC | View event → |
| M 4.7 | 151 km ESE of ‘Ohonua, Tonga | 15.9 km | 2021-08-29 10:05:34 UTC | View event → |
| M 4.7 | 66 km ENE of Pangai, Tonga | 10.0 km | 2021-08-11 16:16:23 UTC | View event → |
| M 4.6 | 157 km SSE of ‘Ohonua, Tonga | 10.0 km | 2021-08-30 14:48:21 UTC | View event → |
| M 4.6 | 138 km W of Neiafu, Tonga | 176.4 km | 2021-08-30 02:43:59 UTC | View event → |
| M 4.6 | Tonga | 69.3 km | 2021-08-24 13:21:30 UTC | View event → |
| M 4.6 | south of Tonga | 10.0 km | 2021-08-14 04:18:29 UTC | View event → |
| M 4.6 | 291 km SSW of ‘Ohonua, Tonga | 10.0 km | 2021-08-09 10:39:10 UTC | View event → |
| M 4.6 | Tonga | 130.0 km | 2021-08-09 04:22:53 UTC | View event → |
| M 4.6 | 157 km SSE of ‘Ohonua, Tonga | 10.0 km | 2021-08-08 11:49:16 UTC | View event → |
| M 4.6 | 66 km S of Hihifo, Tonga | 69.6 km | 2021-08-08 02:23:55 UTC | View event → |
| M 4.6 | 105 km NNE of Hihifo, Tonga | 10.0 km | 2021-08-01 14:45:59 UTC | View event → |
| M 4.5 | 35 km N of Hihifo, Tonga | 82.7 km | 2021-08-30 18:25:54 UTC | View event → |
| M 4.5 | 68 km N of Hihifo, Tonga | 132.8 km | 2021-08-21 07:18:30 UTC | View event → |
| M 4.5 | 45 km N of Hihifo, Tonga | 66.6 km | 2021-08-20 04:06:31 UTC | View event → |
| M 4.5 | 127 km E of Neiafu, Tonga | 10.0 km | 2021-08-19 05:13:13 UTC | View event → |
| M 4.5 | 146 km WNW of Neiafu, Tonga | 234.8 km | 2021-08-19 03:42:36 UTC | View event → |
| M 4.5 | 154 km SE of ‘Ohonua, Tonga | 10.0 km | 2021-08-15 13:47:15 UTC | View event → |
| M 4.5 | 223 km W of Haveluloto, Tonga | 384.8 km | 2021-08-14 13:21:24 UTC | View event → |
| M 4.5 | 51 km SE of Hihifo, Tonga | 64.8 km | 2021-08-09 14:01:21 UTC | View event → |
| M 4.5 | 122 km N of Neiafu, Tonga | 103.5 km | 2021-08-07 17:36:55 UTC | View event → |
| M 4.5 | south of Tonga | 10.0 km | 2021-08-01 05:50:47 UTC | View event → |
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 →
