1988 Lancang–Gengma earthquakes
1988 Lancang–Gengma earthquakes (China) 1988 Lancang–Gengma earthquakes (Yunnan) | |
| UTC time | 1988-11-06 13:03:19 |
|---|---|
| 1988-11-06 13:15:43 | |
| ISC event | 419867 |
| 419869 | |
| USGS-ANSS | ComCat |
| ComCat | |
| Local date | 6 November 1988 |
| Local time | 21:03 |
| 21:15 | |
| Magnitude | Mw 7.0 |
| Mw 6.9 | |
| Depth | 18 km (11 mi) |
| 15 km (9.3 mi) | |
| Epicenter | China–Myanmar border region 22°47′20″N 99°36′40″E / 22.789°N 99.611°E |
| Type | Strike-slip |
| Areas affected | China, Burma and Thailand |
| Total damage | US$270 million in 1988 |
| Max. intensity | CSIS IX (1st shock) CSIS X (2nd shock) |
| Landslides | Yes |
| Foreshocks | Yes |
| Aftershocks | 600+ |
| Casualties | 748–939 fatalities, 7,700+ injured |
On 6 November 1988, two earthquakes struck Lancang and Gengma counties, Yunnan, near the China–Myanmar border. These earthquakes measured moment magnitude (Mw ) 7.0 and 6.9, respectively, spaced 12 minutes apart. These earthquakes were assigned a maximum China seismic intensity of IX and X, respectively. Between 748 and 939 people were killed; more than 7,700 were injured. Both earthquakes caused damage and economic losses estimated at CN¥ 2.05 billion (CN¥8 billion in 2024). Moderately large aftershocks continued to rock the region, causing additional casualties and damage.