1622 North Guyuan earthquake
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| Date | October 25, 1622 |
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| Magnitude | 7.0 |
| Epicenter | 36°30′N 106°18′E / 36.5°N 106.3°ECoordinates: 36°30′N 106°18′E / 36.5°N 106.3°E |
| Max. intensity | X (Extreme) |
| Casualties | 12,000 |
The 1622 North Guyuan earthquake struck Ningxia, China on 25 October with a Richter 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. The earthquake occurred on the "rake of the Zhongwei-Tongxin fault", with a mid-seismogenic depth of about 15 kilometres (9.3 mi).
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