Explore earthquake activity year by year and month by month using the historical Quake Pulse database.
| Magnitude | Location | Depth | Time | |
|---|---|---|---|---|
| M 5.6 | 129 km S of ‘Ohonua, Tonga | 10.0 km | 2011-08-20 01:24:59 UTC | View event → |
| M 5.5 | 200 km WSW of Haveluloto, Tonga | 218.8 km | 2011-08-12 03:15:09 UTC | View event → |
| M 5.2 | 66 km NNE of Hihifo, Tonga | 44.7 km | 2011-08-24 19:41:06 UTC | View event → |
| M 5.2 | 31 km S of Hihifo, Tonga | 95.4 km | 2011-08-10 19:39:22 UTC | View event → |
| M 5.0 | 185 km WSW of Haveluloto, Tonga | 201.7 km | 2011-08-23 19:53:30 UTC | View event → |
| M 5.0 | 175 km NW of Neiafu, Tonga | 264.0 km | 2011-08-07 11:01:58 UTC | View event → |
| M 4.8 | 142 km SSW of ‘Ohonua, Tonga | 35.0 km | 2011-08-31 20:17:02 UTC | View event → |
| M 4.8 | Tonga | 10.0 km | 2011-08-30 06:12:42 UTC | View event → |
| M 4.8 | 80 km WNW of Neiafu, Tonga | 68.5 km | 2011-08-29 21:59:16 UTC | View event → |
| M 4.8 | 77 km E of Hihifo, Tonga | 10.0 km | 2011-08-26 15:42:55 UTC | View event → |
| M 4.8 | 86 km N of Hihifo, Tonga | 35.0 km | 2011-08-21 22:51:28 UTC | View event → |
| M 4.8 | 205 km SSW of ‘Ohonua, Tonga | 96.2 km | 2011-08-06 20:55:57 UTC | View event → |
| M 4.8 | 241 km SW of ‘Ohonua, Tonga | 106.9 km | 2011-08-03 10:53:45 UTC | View event → |
| M 4.7 | 128 km SW of Hihifo, Tonga | 136.2 km | 2011-08-31 00:57:25 UTC | View event → |
| M 4.7 | 268 km WNW of Haveluloto, Tonga | 512.8 km | 2011-08-24 14:12:41 UTC | View event → |
| M 4.7 | 253 km W of Haveluloto, Tonga | 379.8 km | 2011-08-20 17:28:52 UTC | View event → |
| M 4.7 | 164 km WNW of Pangai, Tonga | 207.2 km | 2011-08-10 13:09:51 UTC | View event → |
| M 4.7 | 182 km WNW of Pangai, Tonga | 231.2 km | 2011-08-05 10:38:24 UTC | View event → |
| M 4.6 | 161 km W of Pangai, Tonga | 247.2 km | 2011-08-16 02:07:58 UTC | View event → |
| M 4.6 | 132 km W of Haveluloto, Tonga | 229.9 km | 2011-08-01 06:51:28 UTC | View event → |
| M 4.5 | 47 km ESE of Neiafu, Tonga | 10.0 km | 2011-08-18 23:59:10 UTC | View event → |
| M 4.5 | 81 km NNW of Hihifo, Tonga | 96.5 km | 2011-08-13 15:42:22 UTC | View event → |
| M 4.5 | 260 km W of Neiafu, Tonga | 65.8 km | 2011-08-06 23:00:01 UTC | View event → |
| M 4.5 | 262 km SSW of ‘Ohonua, Tonga | 55.4 km | 2011-08-04 17:44:58 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 →
