| 1622 North Guyuan earthquake | |
| Pre-1900: | yes |
| Magnitude: | 7.0 |
| Location: | 36.5°N 106.3°W |
| Casualties: | 12,000 |
The 1622 North Guyuan earthquake struck Ningxia, China on 25 October with a magnitude of 7.0 and a maximum Mercalli intensity of X (Extreme). It was the only recorded big earthquake in western China for 148 years, between 1561 and 1709.[1] The earthquake occurred on the "rake of the Zhongwei-Tongxin fault", with a mid-seismogenic depth of about .[2]