What are the hazards of heavy rain? What does the orange warning signal for heavy rain mean?

"The white rain reflects the cold mountain, and the dense forest looks like silver bamboo." "I am so greedy to watch the white rain sweeping the ground that I don't know my clothes are all wet." When you see these two lines of poetry, will you definitely think of rainstorms? In ancient times, rainstorms were also known as white rain, inverted wells, freezing rain, black rain, heavy rain, heavy rain, pouring rain, heavy rain, sudden rain, and Lingyu. Rainstorms are one of the meteorological disasters in my country. Long-term rainstorms are prone to waterlogging or runoff that floods low-lying areas, causing floods. Therefore, it does not help people's production and life. Rainstorms may cause many kinds of harm. Let's take a closer look below.

Contents of this article

1. Another name for ancient rainstorms

2. Hazards of heavy rain

3. Meaning of Orange Rainstorm Warning Signal

4. How to walk outdoors during heavy rain

Ancient rainstorm nickname

Other names for rainstorms in ancient times include white rain, inverted well, freezing rain, black rain, heavy rain, torrential rain, heavy rain, heavy rain, and Lingyu. Poems about white rain include: Li Bai's "Poems of Staying at Xiahu": "White rain reflects the cold mountain, dense like silver bamboo." Lu You's "Written in Heavy Rain": "I am so greedy to watch the white rain sweeping the ground, it falls without realizing that my clothes are all wet."

According to the size of its occurrence and impact area, rainstorms are divided into: local rainstorms, regional rainstorms, large-scale rainstorms, and extremely large-scale rainstorms.

It is divided into three levels according to the intensity of precipitation, namely, 24-hour precipitation of 50-99.9 mm is called "heavy rain", 100-249.9 mm is called "tony rain", and more than 250 mm is called "extremely heavy rain".

The levels of heavy rain warning signals are divided into four levels: Level IV (general), Level III (relatively severe), Level II (serious), and Level I (particularly severe), which are marked by blue, yellow, orange, and red Chinese and English icons respectively.

The hazards of heavy rain

Heavy rain may cause many kinds of damage, such as: 1. Flood disasters. If heavy rain occurs, poor drainage may easily cause waterlogging. 2. Reduced crop yields. Heavy rain may cause soil pores to be filled with water, causing terrestrial plant roots to lack oxygen, affecting crop yields.

During heavy rain, there will be a lot of water in low-lying areas. When traveling, try to avoid waterlogged areas. When walking in water, pay attention to your feet to avoid falling into wells, pits, or holes.

If the residential area is low-lying, safety measures should be taken, such as building a high wall, placing a flood retaining board at the front door, and installing a small water pump.

Try not to ride a bicycle in heavy rain. If your car stalls in a low-lying area, it is not recommended to wait in the car. You should get out and go to a higher place to wait for rescue.

Meaning of Orange Rainstorm Warning Signal

The orange rainstorm warning means that the rainfall will reach more than 50 mm within 3 hours, or more than 50 mm, and the rainfall may continue. The orange rainstorm warning signal is the third level of rainstorm warning signals. It is a warning signal made by the meteorological department before the arrival of heavy rain through meteorological monitoring.

There are four levels of rainstorm warning signals, namely blue, yellow, orange and red.

The blue warning standard is that the rainfall will reach more than 50 mm within 12 hours, or reach more than 50 mm, and the rainfall is likely to continue.

The yellow warning standard is that the rainfall will reach more than 50 mm within 6 hours, or reach more than 50 mm, and the rainfall may continue.

The red warning standard is that the rainfall will reach more than 100 mm within 3 hours, or reach more than 100 mm, and the rainfall may continue.

How to walk outdoors during heavy rain

When walking outdoors during heavy rain, pay attention to observation, avoid areas with serious water accumulation as much as possible, and walk close to solid buildings to prevent falling into manholes, pits, etc. Try not to walk close to weak walls or buildings to prevent collapse, falling objects, etc. Try not to go out during heavy rain, and do not stay under large trees or power lines.

Heavy rain refers to rain with very high precipitation intensity, which often forms in cumulonimbus clouds. According to Chinese meteorological regulations, heavy rainfall with a 24-hour precipitation of more than 50 mm is called "heavy rain".

Heavy rain is one of the major meteorological disasters in China. Long-term heavy rain can easily cause water accumulation or runoff to submerge low-lying areas, causing flood disasters.

Large-scale continuous heavy rain and concentrated torrential rain will affect industrial and agricultural production and may endanger life safety.