Is it normal to rain 142 ml for an hour?

Not normal. According to Xiaohongshu's inquiry, according to the meteorological regulations, rain with precipitation of more than 50 mm in 24 hours is called rainstorm, which is divided into three grades according to its precipitation intensity, namely, 24-hour precipitation of 50 to 99.9 mm is called rainstorm, 100 to 250 mm is called rainstorm, and 250 mm is called torrential rain.