  | |
| Local date | August 2, 1733 |
|---|---|
| Magnitude | Ms 7.75 |
| Epicenter | 26°12′N 103°06′E / 26.2°N 103.1°E |
| Areas affected | Yunnan, China |
| Max. intensity | MMI X (Extreme) |
| Casualties | Dozens |
The 1733 Dongchuan earthquake affected Yunnan in China on August 2. The earthquake, which had an estimated surface-wave magnitude of 7.75, damaged homes across the province. There were dozens of fatalities and more deaths occurred in mines. The earthquake was the result of faulting along the Xiaojiang Fault Zone.