Rainstorms was expected to pelt south China during the next three days as Typhoon Nalgae approached, forecasters said Sunday.

Nalgae, the second typhoon in a week, was centered about 940 km southeast of Sanya City, Hainan Province at at 8:00 a.m. Sunday, and was forecast to move westward at 10-15 km per hour, the National Meteorological Center (NMC) said.

Rainfalls spawn by the typhoon are expected to sweep the eastern areas of south of the Yangtze River, Taiwan and south China over the next three days, with downpours hitting the southernmost Hainan island and eastern Taiwan, according to the NMC.

The weather agency urged people in typhoon-affected areas avoid outdoor activities and suggested large assemblies be canceled.

Meanwhile, a cold wave was forecast to grip parts of the Yangtze-Huaihe region, regions south of the Yangtze River, and south China over the coming three days, bringing down temperatures by 3-6 degrees Celsius, the NMC said.