Residents wade on waterlogging Keji Road in Xi'an, capital city of Northwest China's Shaanxi province, July 24, 2016. Rainstorm hit Xi'an on Sunday evening, causing waterlogging and traffic congestion. [Photo/Xinhua]

XI'AN - Northwest China's Xi'an City has issued a red storm alert, the highest in China's four-tier color-coded warning system, as heavy rain has battered the city since Sunday.

The city has seen waterlogging in some regions, and maximum precipitation in parts of the city exceeded 100 mm in 5 hours.

About 100 flights were disrupted at Xi'an Xianyang International Airport and a subway station was temporarily closed due to the rain.

Torrential rain has swept across northern China since last week and had left 130 people dead and 110 others missing in Hebei as of Sunday.