The bridge over the Hukou Waterfall in North China's Shanxi province has been impaired by seasonal floods caused by continuous rain weather, forcing the closure of the sightseeing area at the famous tourist attraction on Aug 6, 2020. (Photo: Xinhua)

China's national observatory on Saturday renewed a blue alert for rainstorms in several provinces and regions, where incessant downpours have already wreaked havoc.

From Saturday morning to Sunday morning, torrential rains are expected in parts of Inner Mongolia, Heilongjiang, Jiangsu, Anhui, Henan, Hubei, Hunan, Guizhou, Sichuan, Yunnan and Tibet, the National Meteorological Center said in a statement on its website.

Some of the aforementioned regions will see more than 70 mm of hourly precipitation, accompanied by thunderstorms and strong winds, the center said.

The center advised local authorities to remain alert for possible flooding, landslides and mudslides, and recommended halting outdoor operations in hazardous areas.

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