Summer high!Two lightning accidents within a week, please take this lightning protection manual

Author:Beijing Science and Technology Time:2022.08.28

Summer thunderstorms are frequent, and two lightning strike accidents have occurred in the past week. How dangerous is hit by a thunder? Please collect this lightning protection manual >>

Organize/New Media Editor Lu Bingxin

On August 27, the Anhui Nanling County Emergency Administration reported that four people from Nanling Square in Zihan Town, Nanling County were hit by lightning, causing two people to die and two injuries. It is understood that at 17:20 pm that day, the Nanling County Meteorological Observatory issued a lightning yellow warning signal. Several local netizens posted "the thunderous loud noise".

On August 24th, a pair of newcomers in Lijiang, Yunnan were hit by lightning while taking wedding photos in Yulong Snow Mountain, and the groom died unfortunately.

Recently, thunderstorm weather is relatively frequent. In just one week, two lightning strike accidents have been exposed, which is distressed. How much is the power of lightning strikes, how does it cause casualties? What time is the highest when thunderstorms, and which places are prone to lightning strikes? In addition to paying attention to lightning warning information at any time, how to protect yourself in lightning and electricity? Look at it together.

How dangerous is hit by a thunder?

About 460 people died per year

In 2012, the article "Troubleshooting and Evolution Evaluation Zone of my country" published in 2012 pointed out that according to data analysis from 1997-2010, lightning strikes caused an average of 460 people in my country every year and 425 injuries.

The main manifestation of lightning strikes is lightning. During the lightning strike, the current of up to tens of thousands of ampels of ampere strikes the human body, and the moment when the current passes can cause damage to the body tissue or cause death. Lightning wound survivors often leave symptoms such as weakness, dizziness and memory loss.

Clinically, lightning wounds can be divided into three types: electrostatic injury, electric heating burns and lightning burn.

Electrical injury: The current through the human body can cause damage and dysfunction of the body tissue and organs.

Electric heating burns: The resistance of various tissues and organs of the human body is different, so the severity of the burns is also different.

Lightning burn: After the human body is hit by lightning, the skin blood vessels are shrinking, and the skin burns are mesh pattern.

After a lightning injury, in the case of ensuring environmental safety, the rescuer must judge the injury of the lightning injury. Once the lightning strike causes heartbeat and breathing, it should immediately call the "120" first -aid call and perform cardiopulmonary resuscitation on the spot. Until the patient's sober or professional ambulance staff arrived, the hospital was sent to the hospital for further treatment.

Summer thunderstorms

The highest peak from 15:00 to 17:00 afternoon

my country is vast, and thunderstorms occur in various places sooner or later. As far as the national average situation is concerned, there are obvious seasonal differences in thunderstorms. Summer is a high incidence period, and it rarely occurs in winter.

From the perspective of the number of thunderstorm days by month by month, my country's thunderstorms mainly occur from April to September. Among them, the highest peak in July, reaching 8.5 days, basically thunderstorms may occur every 4 days, and from November to February of the following year There are almost no thunderstorms across the country, with an average number of days less than 0.5 days.

Shi Yan, a meteorological analyst of China Weather Network, introduced that the peak of thunderstorms in my country is mainly from June to August, which is closely related to the current weather. At this time, after the outbreak of the summer wind in the south, the warm and humid airflow became more enhanced and the weather was more likely to appear. In the north, due to the frequent activity of the cold vortex in the northeast, the number of streams in North China and Northeast China increased, and the number of thunderstorms was more. After September, the rainy season in the northeast and North China of my country ended, and the number of thunderstorms declined significantly; in the south, with the retreat of the southwest monsoon, the warm and humid air flow decreased, the temperature decreased, and the probability of thunderstorms also decreased rapidly.

During the day, thunderstorms in all parts of my country are generally concentrated in the afternoon to the evening, and the highest peak at 15:00 to 17:00. According to statistics from the Chinese Academy of Meteorological Sciences, in the 10 years from 1997 to 2006, the daily change characteristics of thunderstorms showed a typical single -peak type, which began to rise rapidly at 13:00, and reached a high value at 15:00 to 17:00. It reached the peak at 16:00, accounting for 17.1%.

The south is more likely to occur than the north

There are more mountains than plains

In terms of meteorology, an observation station heard the thunder observation day as a thunderstorm day. China Weather Network studied big data from thunderstorms from 1981 to 2013 to find that there are more likely thunderstorms in southern my country than north, and there are more thunderstorm days than the plain.

From the national thunderstorm map released by China Weather Network, it can be seen that the areas with the highest thunderstorms in my country are in southern Yunnan, Hainan, most of Guangdong, southeast of Guangxi, and parts of the central Tibet. The land exceeds 100 days; the average number of thunderstorm days in the west of Yunnan, west of Guangxi and north, Jiangxi, Fujian, and southern Zhejiang is between 50-70 days.

Most of Zhejiang, central and southern Anhui, Hunan, Chongqing, Guizhou, western and southern Sichuan, Shanxi, Beijing, northern Hebei, Jilin, eastern Qinghai, and western Xinjiang are between 30-50 days. Most of the northwest region, Inner Mongolia and Huanghuai Plain are areas with lower thunderstorms. The average annual thunderstorm is less than 30 days.

Check this lightning protection manual

You need to avoid it to hear the thunderous sound

Wei Ke, an associate researcher at the Institute of Atmospheric Physics of the Chinese Academy of Sciences, reminded in Chinese science newspapers that if thunder can be heard, the scope of lightning at this time is about 10 kilometers. Therefore, as long as the thunder is heard, the thunderstorm cloud is about 1 km to 10 kilometers above the head. At this time, you need to quickly avoid it, because the lightning is very close.