Standard of rainstorm

The standard of rainstorm is that the rainfall reaches more than 250 mm?

According to China's meteorological regulations, rain with an hourly rainfall of more than 16 mm, or a continuous rainfall of more than 30 mm for 12 hours and a rainfall of more than 50 mm in 24 hours is called "rainstorm". According to its precipitation intensity, it is divided into three grades, namely, 24-hour precipitation of 50-99.9 mm is called "rainstorm", 100-249.9 mm is called "heavy rainstorm", and more than 250 mm is called "extraordinary rainstorm".

The rainstorm warning signal is divided into four levels, which are represented by blue, yellow, orange and red respectively. Rainstorm blue warning signal standard: 12 hours, the rainfall will reach more than 50 mm, or it has reached more than 50 mm and the rainfall may continue. Yellow rainstorm warning signal standard: within 6 hours, the rainfall will reach more than 50 mm, or it has reached more than 50 mm and the rainfall may continue.

Rainstorm orange warning signal standard: within 3 hours, the rainfall will reach more than 50 mm, or it has reached more than 50 mm and the rainfall may continue. Red warning signal standard of rainstorm: within 3 hours, the rainfall will reach 100 mm or above, or it has reached 100 mm and the rainfall may continue.

Matters needing attention in rainstorm weather

1. There is a lot of water in the low-lying areas during the rainstorm. Go back and forth and try to bypass the stagnant water. Don't rush through the stagnant water without confirmation. Pay attention to observation when walking in stagnant water. Prevent falling into a well or pit or hole.

2. If the residence is low-lying, measures of "small enclosure" can be taken according to local conditions, such as building fences, placing water baffles at the gate, and configuring small pumps.

3. Rainstorm weather reduces or directly cancels all outdoor activities. Outdoor activities are very dangerous in the case of heavy rain, especially in summer. Heavy rain is often accompanied by lightning and thunder, which may cause harm to people and is very likely. Therefore, in the event of heavy rain, try not to go outdoors. If you can cancel, you can reduce it.

Firstly, we should pay attention to the weather forecast. Now with the development of science and technology, meteorology has also improved, and the weather forecast is very close to the actual situation. Therefore, we should pay attention to the weather, make preparations before the rainstorm, arrange our own time and things in advance, and don't interrupt our plans because of the rainstorm.

Baidu encyclopedia-rainstorm