Explore earthquake activity year by year and month by month using the historical Quake Pulse database.
| Magnitude | Location | Depth | Time | |
|---|---|---|---|---|
| M 5.5 | south of Tonga | 10.0 km | 2021-07-23 23:13:52 UTC | View event → |
| M 5.4 | 122 km WNW of Pangai, Tonga | 215.5 km | 2021-07-18 00:36:33 UTC | View event → |
| M 5.4 | 152 km NE of Neiafu, Tonga | 10.0 km | 2021-07-16 10:01:59 UTC | View event → |
| M 5.3 | 87 km SSE of Hihifo, Tonga | 10.0 km | 2021-07-30 22:39:16 UTC | View event → |
| M 5.2 | 43 km N of Neiafu, Tonga | 10.0 km | 2021-07-14 02:08:04 UTC | View event → |
| M 5.1 | 228 km SE of Hihifo, Tonga | 10.0 km | 2021-07-20 21:19:51 UTC | View event → |
| M 5.0 | 85 km N of Hihifo, Tonga | 10.0 km | 2021-07-25 04:01:41 UTC | View event → |
| M 5.0 | 75 km E of Hihifo, Tonga | 10.0 km | 2021-07-09 09:47:30 UTC | View event → |
| M 4.8 | 81 km NE of Hihifo, Tonga | 32.2 km | 2021-07-27 20:26:15 UTC | View event → |
| M 4.8 | 75 km NW of Hihifo, Tonga | 175.0 km | 2021-07-26 06:29:47 UTC | View event → |
| M 4.8 | 96 km N of Hihifo, Tonga | 92.9 km | 2021-07-25 18:48:24 UTC | View event → |
| M 4.8 | 208 km SE of Hihifo, Tonga | 10.0 km | 2021-07-24 02:55:44 UTC | View event → |
| M 4.8 | 43 km SSE of Hihifo, Tonga | 50.6 km | 2021-07-23 01:16:38 UTC | View event → |
| M 4.7 | 127 km SW of Vaini, Tonga | 141.4 km | 2021-07-26 19:20:00 UTC | View event → |
| M 4.7 | 219 km S of ‘Ohonua, Tonga | 10.0 km | 2021-07-19 05:49:13 UTC | View event → |
| M 4.7 | Tonga | 10.0 km | 2021-07-14 21:43:30 UTC | View event → |
| M 4.7 | 172 km ESE of Hihifo, Tonga | 10.0 km | 2021-07-12 11:48:08 UTC | View event → |
| M 4.7 | 53 km ENE of Hihifo, Tonga | 35.0 km | 2021-07-11 10:24:29 UTC | View event → |
| M 4.7 | 106 km N of Hihifo, Tonga | 10.0 km | 2021-07-02 09:04:56 UTC | View event → |
| M 4.6 | 132 km NW of Nuku‘alofa, Tonga | 255.8 km | 2021-07-30 02:40:22 UTC | View event → |
| M 4.6 | 20 km WSW of Hihifo, Tonga | 113.5 km | 2021-07-25 00:21:23 UTC | View event → |
| M 4.6 | 198 km WNW of Hihifo, Tonga | 10.0 km | 2021-07-13 13:03:01 UTC | View event → |
| M 4.6 | 104 km ESE of ‘Ohonua, Tonga | 10.0 km | 2021-07-08 09:35:37 UTC | View event → |
| M 4.6 | 90 km NNE of Hihifo, Tonga | 10.0 km | 2021-07-06 16:41:21 UTC | View event → |
| M 4.6 | 123 km NW of Hihifo, Tonga | 10.0 km | 2021-07-05 06:44:03 UTC | View event → |
| M 4.5 | south of Tonga | 10.0 km | 2021-07-25 10:57:47 UTC | View event → |
| M 4.5 | 79 km SE of Hihifo, Tonga | 67.7 km | 2021-07-25 04:28:49 UTC | View event → |
| M 4.5 | 70 km N of Hihifo, Tonga | 74.0 km | 2021-07-24 14:37:48 UTC | View event → |
| M 4.5 | 187 km NW of Neiafu, Tonga | 261.5 km | 2021-07-22 03:58:29 UTC | View event → |
| M 4.5 | 108 km NE of Hihifo, Tonga | 10.0 km | 2021-07-17 02:18:10 UTC | View event → |
| M 4.5 | 64 km SW of Neiafu, Tonga | 10.0 km | 2021-07-11 14:37:29 UTC | View event → |
| M 4.5 | 283 km WNW of Haveluloto, Tonga | 457.9 km | 2021-07-09 14:22:03 UTC | View event → |
| M 4.5 | 282 km SW of Vaini, Tonga | 184.4 km | 2021-07-01 02:37:13 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.
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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.
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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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