How heavy was the rain in Guangdong on the evening of May 2 1?

To be exact, it started on the morning of 22nd 12.

Basic situation of "5.22" torrential rain in Dongguan

Affected by the vortex shear line, from the night of May 2/Kloc-0 to the morning of May 22, there was a heavy rainstorm in our city, with an average rainfall of 137.6 mm, in Guancheng Street of Gaobu Town, Dongcheng Street, Wanjiang Street, Shijie Town, Tang Zhong Town, Wangniudun Town and Daojiao Town. From 20: 00 on 2 1 day to 08: 00 on 22/day, the rainfall in 27 towns and streets in the city exceeded 50 mm, 2 1 town and street exceeded 100 mm, and 8 towns and streets exceeded 250 mm. The maximum rainfall was 399.3 mm in Gaobu, 390.7 mm in Dongcheng and 372.3 mm in John Wan.