Lightning knowledge

This year's thunderstorms have caused more than one million yuan in economic losses.

At 7 pm on April 22 this year, thundery thunders rang through the sky, and soon the heavy rains poured down. That night, due to thunderstorms, the equipment of several enterprises in our districts of Kanshan, Qianqian and Xinjie Towns was damaged and the direct loss amounted to several hundred thousand yuan; at 9:00 pm on April 29, due to a sudden thunderstorm, the Puyi suffered a lightning strike and suffered a direct economic loss of 30,000 yuan.

According to incomplete statistics, more than 10 lightning disasters have occurred in our region since this year, resulting in direct economic losses of RMB 681,000 and indirect economic losses of RMB 400,000; in the past year, there have been 58 total lightning disasters in our region, resulting in a direct economy. The loss amounted to 2.96 million yuan, and the indirect economic loss amounted to 1.55 million yuan.

The staff of the District Lightning Protection Agency introduced that in the past year, the number of days of lightning disaster in our district reached 17 days, showing the trend of concentrated thunderstorms on strong thunderstorm days, and the peak period of thunderstorms from July to September, including July and August. The number of lightning strikes has been the most concentrated. From 15 to 20 o'clock, it is the relative concentration period of thunderstorms, of which 15 to 17 o'clock is the period of high incidence of thunderstorms.

From the spatial distribution of thunderstorm flash density, the region is unevenly distributed, with the high frequency of lightning strikes in the northeast region. Strong thunderstorms have caused great impact on transformers, computers and other power and communication facilities and household appliances.

Thunderstorms increased this week

The characteristics of the plum rainy season this week will be more obvious. There are showers almost every day. The difference lies in the length of the rain and the area down. Because of the rain, this week's temperature is unlikely to reach the 35°C high temperature line, and the maximum temperature will fluctuate around 30°C.

It is expected that there will be showers this morning, and there will be moderate to heavy rain between the afternoon and the night. Tomorrow there will be showers or thunderstorms. The rainfall will be moderate. There will be showers after days and the rainfall will be moderate. There will be showers or thunderstorms from Thursday to Sunday. Due to the recent thunderstorms, we went out and watched out for lightning protection.

According to the staff of the District Lightning Protection Agency, lightning strikes mainly include direct lightning, induced lightning and electrostatic induction. Direct strikes directly hit the building structure, causing damage to buildings and casualties.

Inductive lightning is the effect of thunder and lightning on overhead lines or metal pipes. The resulting transient voltage waves intrude into the room along these pipes, causing equipment damage and endangering personal safety. Electrostatic induction is a lightning strike that creates sparks between metal objects, igniting flammable and explosive materials, leading to fire and explosion accidents. According to the situation in our district, the probability of occurrence of induced lightning is greater.

Lightning should pay attention to these points

In the event of lightning storms, how should the public take?

The staff of the District Lightning Protection Bureau reminded that when lightning storms occur, the safest way is to return to the room with lightning protection devices as soon as possible. If you are outdoors, try not to reach objects such as poles, towers, outdoor billboards, and big trees. At the same time, to remove the metal stent umbrella and the body of metal objects, such as glasses, necklaces and so on.

If it is in the car, there will not be any lightning strikes. However, when you are in a thunderstorm, you should never put your head or hand out of the window.

In addition, when lightning occurs, it should be avoided as far as possible the use of home appliances, such as radios, televisions, computers, telephones, etc., the outdoor antenna and power cord should be well grounded, air-conditioning, refrigerators also have to stop using, in order to prevent the induction of thunder and lightning Wave violations. The doors and windows of the house should be closed to prevent lightning from entering the room.

A special reminder is: Do not use solar water heaters for bathing during thunder.

Once you feel that your body has a charge, such as when your hair is upright, or when your skin feels tremulous, be aware that you will receive an electric shock. You should immediately fall to the ground and wait for lightning to call someone for help.

People who have been struck by lightning may be burned or severely shocked, but they are not charged and can be safely treated. When the human body suffers a lightning strike, the lightning current will stop the human heart from beating and stop breathing. At this time, one must call the hospital or 120 emergency services in time; secondly, immediately use the cardiopulmonary resuscitation method and artificial respiration to conduct on-site emergency rescue; The Bureau of Meteorology and mine protection agencies reported that they could conduct the thunderstorm investigation as soon as possible.

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