Explore earthquake activity year by year and month by month using the historical Quake Pulse database.
| Magnitude | Location | Depth | Time | |
|---|---|---|---|---|
| M 5.5 | 243 km SW of Haveluloto, Tonga | 168.3 km | 2003-08-03 19:04:25 UTC | View event → |
| M 5.3 | 146 km NE of Neiafu, Tonga | 10.0 km | 2003-08-13 01:43:15 UTC | View event → |
| M 5.3 | 147 km NE of Neiafu, Tonga | 33.0 km | 2003-08-07 04:07:34 UTC | View event → |
| M 5.2 | 155 km W of Neiafu, Tonga | 227.2 km | 2003-08-11 11:39:03 UTC | View event → |
| M 5.2 | 82 km ENE of Hihifo, Tonga | 33.0 km | 2003-08-06 14:57:51 UTC | View event → |
| M 5.1 | 112 km NNW of Nuku‘alofa, Tonga | 33.0 km | 2003-08-26 11:35:04 UTC | View event → |
| M 5.1 | 145 km NE of Neiafu, Tonga | 33.0 km | 2003-08-11 06:01:03 UTC | View event → |
| M 5.1 | 115 km NNW of Neiafu, Tonga | 81.0 km | 2003-08-03 17:10:28 UTC | View event → |
| M 4.9 | 80 km NE of Hihifo, Tonga | 33.0 km | 2003-08-06 20:45:33 UTC | View event → |
| M 4.8 | 152 km SW of Haveluloto, Tonga | 33.0 km | 2003-08-14 08:41:17 UTC | View event → |
| M 4.8 | 278 km WNW of Haveluloto, Tonga | 502.3 km | 2003-08-04 04:09:33 UTC | View event → |
| M 4.7 | 244 km SSW of ‘Ohonua, Tonga | 33.0 km | 2003-08-07 11:14:45 UTC | View event → |
| M 4.7 | 162 km WNW of Pangai, Tonga | 33.0 km | 2003-08-07 00:48:19 UTC | View event → |
| M 4.6 | 136 km N of Neiafu, Tonga | 33.0 km | 2003-08-29 16:00:10 UTC | View event → |
| M 4.6 | 72 km NE of Neiafu, Tonga | 33.0 km | 2003-08-22 05:38:41 UTC | View event → |
| M 4.6 | 130 km SSW of Hihifo, Tonga | 33.0 km | 2003-08-09 14:22:39 UTC | View event → |
| M 4.5 | 182 km WNW of Neiafu, Tonga | 250.0 km | 2003-08-25 19:35:12 UTC | View event → |
| M 4.5 | 194 km SE of Hihifo, Tonga | 33.0 km | 2003-08-19 06:25:17 UTC | View event → |
| M 4.5 | 166 km SW of Hihifo, Tonga | 33.0 km | 2003-08-05 06:35:14 UTC | View event → |
| M 4.5 | 117 km WNW of Hihifo, Tonga | 224.0 km | 2003-08-03 11:46:53 UTC | View event → |
| M 4.5 | 55 km E of Hihifo, Tonga | 33.0 km | 2003-08-01 20:28:21 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 →
