The city of Christchurch experienced a major earthquake centred south of the city; severe damage and casualties occurred.
| When | Tue Feb 22 2011 12:51 PM |
| Where | 5 km south-east of Christchurch |
| Shaking | Extreme |
| Magnitude | 6.2 |
| Depth | 5 km |
| Quality | best |
| Extreme | 331 | |
| Severe | 450 | |
| Strong | 302 | |
| Moderate | 331 | |
| Light | 2067 | |
| Weak | 297 | |
| Total | 3778 |
| Extreme | 331 | |
| Severe | 450 | |
| Strong | 302 | |
| Moderate | 331 | |
| Light | 2067 | |
| Weak | 297 | |
| Total | 3778 |