Traditional Culture Encyclopedia - Weather inquiry - What does the weather forecast mean by how many millimeters of rain?
What does the weather forecast mean by how many millimeters of rain?
According to the regulations of China Meteorological Bureau, the rainfall within 24 hours is called daily rainfall, and any daily rainfall below10mm is called light rain,10.0-24.9mm is moderate rain, 25.0-49.9mm is heavy rain, 50.0-99.9mm is rainstorm, and100.0-250.
Due to China's vast territory, a few areas have other provisions according to the specific conditions of this province. For example, in rainy Guangdong, if the daily rainfall exceeds 80 mm, it is called rainstorm; In Yan 'an, Shaanxi, where there is little rain, it is called rainstorm when the daily rainfall reaches more than 30 mm.
Don't worry if you don't have a rain cone at hand. You can make one by yourself with some commonly used utensils, and the effect is quite good. Take a disposable plastic or paper bowl with a diameter of 20 cm (you can choose a convenient paper bowl with a suitable size), cut a small hole slightly larger than corn kernels at the bottom, and then put the bowl on a pot without a cover. There is a glass bottle in the jar, and the bottle mouth is connected with the small hole in the bottom of the bowl. The simple rain tube is ready. After the simple rainfall pipe is completed, it can be placed 70 cm above the ground (the distance between the nozzle and the ground) to receive rainwater. After the rain stops, weigh the water in the bottle with a scale. 30 grams of water is equivalent to 1 mm of rainfall.
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