BEIJING, June 28 -- China's meteorological authority on Saturday continued a blue alert for rainstorms in the country's multiple regions.

From 8:00 a.m. Saturday to 8:00 a.m. Sunday, heavy rains and rainstorms are forecast to hit parts of the provincial-level regions of Hebei, Shandong, Henan, Jiangsu, Anhui, Hubei, Hunan, Zhejiang, Yunnan, Guangxi, Guangdong and Heilongjiang, the National Meteorological Center said.

North parts of Jiangsu are expected to experience torrential rains, with precipitation up to 150 mm, the center added.

The center has advised local authorities to take precautions for heavy rainstorms, and suggested that necessary drainage measures should be taken in urban areas and across farmlands.

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