Precautions for heavy rain protection_What is the standard of heavy rain in millimeters?

Heavy rain refers to rainfall in which the amount of water falling from the atmosphere to the ground reaches or exceeds 50 mm per day. Heavy rain is often mixed with strong winds. The following are the precautions for heavy rain protection compiled by the editor. What is the standard of heavy rain in millimeters? You are welcome to read, share and learn from it. I hope it will be helpful to everyone.

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Precautions for heavy rain protection

Preventing intestinal infectious diseases

High temperatures in summer Continuous heavy rains will increase the air humidity, providing "excellent" soil for the growth and reproduction of bacteria and viruses. Food is prone to mold and spoilage. Severe rainfall can cause floods and may also cause water pollution. If you don't pay attention to your daily diet, you may easily develop acute intestinal infectious diseases after eating unclean food. Intestinal infectious diseases are diseases in which pathogens invade the intestines through the mouth and cause diarrhea or other organ and systemic infections. Common intestinal infectious diseases after heavy rains and floods mainly include bacillary dysentery, cholera, typhoid and paratyphoid, hepatitis A, bacterial infectious diarrhea, viral diarrhea, and parasitic diarrhea.

Therefore, if there are continuous heavy rains or floods, special attention should be paid to drinking water hygiene. Do not drink raw water, only drink boiled water or bottled water or bottled water that meets hygienic standards, wash your hands frequently, and do not eat raw or cold food. Wash or peel vegetables and fruits thoroughly before eating. Pay special attention to food hygiene. Do not eat spoiled food or food soaked in sewage; do not eat leftovers, raw or cold food; do not eat drowned or dead poultry and aquatic products; separate raw and cooked food; clean and disinfect bowls and chopsticks before use ; Do not buy food from stalls without health permits.

Prevent skin diseases

After a heavy rain, failure to drain the rainwater in time will cause water accumulation on the road. This water is often dirty. If the body is immersed in warm, humid and dirty water for a long time, it will cause Invasion by various microorganisms may cause infections and ulcers, and can easily lead to dipping of hands and feet, eczema, skin diseases, etc.

Therefore, go out as little as possible on rainy days and avoid staying in standing water for a long time. Do not wade into the water rashly. If you have to, apply waterproof ointment on your legs, especially between the toes, before wading into the water. After wading in water and returning home, immediately wash the water-exposed parts with clean water and soap and dry them. Sprinkle talcum powder on wrinkled parts such as between toes to keep them clean and dry. It is recommended to wear rain boots when going out on rainy days. If there is a break in the skin, apply antibacterial ointment on the wound first, and do not wade in the water with bare feet. Wearing rain boots or non-breathable shoes and socks can easily cause fungi to breed and spread. You should change your socks every day and brush your shoes frequently. Wash and dry wading shoes as soon as possible, and try not to wear them again before they are completely dry.

Prevent falling injuries

The ground is slippery during continuous heavy rains and it is easy to slip. The elderly, children or pregnant women should pay attention to safety when walking indoors. Heavy rains have caused serious water accumulation on the road, which may also cause manhole covers to be blown open and some road sections to collapse. Therefore, try to avoid going out. When wading in water, you must carefully observe the road surface and avoid unfamiliar road sections. When you have to go out, you can use a wooden stick or a long-handled umbrella to explore the way. This can not only maintain balance, but also help avoid potholes and avoid accidents. When walking, avoid places with serious water accumulation and do not walk along the current. Pay attention to your feet, because the pressure of accumulated water can break open the manhole cover. Therefore, if you find a whirlpool nearby, you should avoid it carefully to prevent being involved in or falling into hidden wells, manholes, pits, construction tunnels, etc. If trauma occurs, the skin should be disinfected with iodine or alcohol in time. If it is more serious, it should be bandaged with gauze, bandage, etc. If necessary, a tetanus shot should be injected or seek medical treatment in time.

Protection against lightning strikes and electric shock

Thunderstorms in summer are often accompanied by lightning. Therefore, do not go out during thunderstorms. It is best to cut off the power of household equipment at home, do not use solar water heaters to bathe, and do not touch various cables and metal pipes.

If you are already outdoors, do not use umbrellas with metal tips; do not swim, boat, or fish; do not stay under big trees, next to chimneys, tall billboards, or stand around wires, flagpoles, haystacks, tents, etc. without lightning protection Stay away from tall objects with equipment; do not get close to railroad tracks, metal railings and other large metal objects; wearing rain boots can provide insulation and prevent being hit by lightning or downed wires.

What is the standard of heavy rain in millimeters?

There are three standards for judging heavy rain. Generally, it refers to the rainfall reaching more than 16 mm per hour, or the continuous rainfall reaching 30 mm within 12 hours. mm or more, or more than 50 mm of continuous rainfall in 24 hours. According to my country's meteorological regulations, rain with a precipitation of 50 mm or more in 24 hours is called "heavy rain". According to the intensity of precipitation, it can be divided into three levels, namely "heavy rain", "heavy rain" and "extreme heavy rain". "Heavy rain" refers to precipitation reaching 50 to 99.9 mm in 24 hours; "heavy rain" refers to precipitation of less than 100 to 200 mm; and "extremely heavy rain" refers to precipitation of more than 200 mm.

Because regions and terrain characteristics are different, the standards for heavy rain and floods in each region are also different. Extremely heavy rain is a kind of disastrous weather that often causes floods and severe soil erosion, leading to major economic losses such as engineering failures, embankment failures, and crop flooding. Especially for some lower-lying and more restricted areas, heavy rains will cause more disasters to agriculture.

Knowledge of rainstorm warning color levels

The rainstorm warning signal has four levels, represented by four colors: blue, yellow, orange and red.

In the mainland, the red rainstorm warning signal is the highest level of warning signal;

In Hong Kong, there are only three levels of warning signals, of which the highest level of warning signal is the black rainstorm warning signal. It means that rainfall in some local areas has reached more than 100 millimeters in the past 3 hours, and the rain will continue.

The National Meteorological Administration is the department mainly responsible for the management of the issuance, cancellation and dissemination of early warning signals across the country.

Local meteorological authorities at all levels are responsible for the management of the issuance, cancellation and dissemination of early warning signals within their own regions.

Other relevant departments shall cooperate with the Meteorological Sentence in issuing and disseminating early warning signals in accordance with their responsibilities.

Extended information:

The warning levels are as follows

The blue warning standard is that the rainfall will reach more than 50 mm within 12 hours, or the rainfall will reach more than 50 mm. May last.

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 orange warning standard is that the rainfall will reach more than 50 mm within 3 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 more than 100 mm, and the rainfall may continue.

Precautions for rainstorm protection