Scientific lightning protection does not enter these "minefields"

According to the statistical analysis of lightning monitoring data over the years, after the thrilling solar terms, all parts of Guangxi have entered the period of frequent lightning. Thunderstorms may occur throughout the year, but the most common time period is from March to September. The Liuzhou Meteorological Disaster Prevention Plan, which was enacted in 2012, calculated that the average annual number of thunderstorms from 1952 to 2011 was 57-71.

According to meteorological observation records, the meteorological department counted the number of thunderstorm days in Liuzhou City and surrounding counties during the 10 years from 2004 to 2013. The most days of thunderstorms were in Liuzhou City, which reached 75 days, followed by Ronganhe. Liucheng, reached 45 days and 42 days respectively. According to the number of days of thunderstorm days, Liuzhou City should be regarded as a prone area of ​​lightning. However, in the "Meteorological Disaster Prevention Plan of Liuzhou City", the central part of Rong'an is classified as a high-risk area of ​​lightning, Rongshui Miao Autonomous County and Liucheng. County, Luzhai County, Liujiang County (now Liujiang District) are high-risk areas; Sanjiang Yi Autonomous County and Liuzhou City are lower risk areas.

Experts from the Liuzhou Lightning Protection Center said that the lightning-prone area is not the same as the high-risk area. The higher the risk, the more likely it is to cause accidents and disasters when lightning strikes. The urban area is tall and the buildings are mostly equipped with lightning protection. Tools, so there are very few accidents caused by lightning strikes. Relatively speaking, in suburban and rural areas, because there are no tall buildings, and some buildings do not have lightning protection devices installed, the ground is relatively empty, and the clouds are easily concentrated in this area, so it is most prone to casualties, so the risk will be Higher than the urban area.

Scientific lightning protection can save lives

Judging from the lightning strikes that occurred over the years, most accidents are related to the incorrect way of avoiding rain and lightning. According to experts from the Liuzhou Lightning Protection Center, thunder and lightning are generally generated in cumulon clouds with strong convection, so they are often accompanied by strong gusts and heavy rains, sometimes accompanied by hail and tornadoes.

In general, the upper part of the cumulonimbus is dominated by positive charges and the lower part is dominated by negative charges. Therefore, a potential difference is formed between the upper and lower portions of the cloud. When the potential difference reaches a certain level, it will produce a discharge. This is our common lightning phenomenon. In addition to being a bright electric spark, lightning is accompanied by a strong sound. This is thunder.

With the improvement of the weather forecasting system, it is now possible to make early predictions about the occurrence of lightning. For example, lightning activity may occur within six hours. When a lightning disaster may occur, the meteorological department will issue a yellow lightning warning; lightning will occur within two hours. The possibility of activity is very high, or it has been affected by lightning activities, and may continue. When the possibility of a lightning disaster is relatively high, an orange warning of lightning will be issued; the possibility of lightning activity within two hours is very high, or there is already Strong lightning activity occurs and may continue, and the possibility of a lightning disaster is very high. A red warning of level Z will be issued.

After the meteorological department issues lightning warnings, the public should reduce unnecessary outings, try to stay in the room with lightning protection devices and close the doors and windows. When lightning occurs, try to avoid the metal water pipes of the households and the water pipes connected to the roof; While charging, you can call hua or play ji, listen to music, and don’t go online and play ji.

Outdoor personnel should hide in buildings or cars with lightning protection facilities; do not shelter from rain under trees, under poles, or under tower cranes; if it is an open space where nowhere to hide, people should try to avoid becoming a commanding height and should find In places with lower terrain, your feet will be close together and you can reduce the harm caused by step voltage, and try not to wear umbrellas. Do not put metal conductive materials such as agricultural tools, badminton rackets and golf clubs on your shoulders.

If someone is struck by lightning, the rescuer should promptly perform artificial respiration and cardiopulmonary resuscitation and immediately send it to the doctor for medical treatment.