BEIJING, Aug. 30 -- Chinese authorities on Wednesday issued a yellow alert for possible geological disasters triggered by heavy rainfall in parts of southwest China.

The Ministry of Natural Resources and the China Meteorological Administration have warned of the risks of rain-induced geological disasters in western parts of Yunnan from 8 p.m. Wednesday to 8 p.m. Thursday.

Residents have been advised to take precautions, especially in areas with potential dangers.

China has a four-tier, color-coded warning system for geological disasters, with red representing the most severe warning, followed by orange, yellow and blue.