The casualties caused by lightning disasters are mainly concentrated in rural areas. This is because lightning has certain selectivity, and the geographical environment and characteristics of rural areas are just "appetite" for it. Generally speaking, the resistivity of soil and water is relatively small, and objects nearby are more vulnerable to lightning strikes. For example, solitary buildings in the wilderness, pavilions, grass sheds and water sheds for outdoor rest.

Towering buildings, factories with large metal bodies inside, and houses that are often wet inside, including some villas and suburban houses with inadequate lightning protection measures, all have potential safety hazards in thunderstorm weather.

Doesn't mean it's safe in the city. In thunderstorm weather, if household appliances are not handled properly, it may also cause great disasters. For example, solar water heaters, which are widely used now, are mostly located on the roof. On a thunderstorm day, a large amount of high-voltage lightning current can easily enter the bathroom along metal water pipes and hot water. When people soak in the bath, the impedance of the human body will be greatly reduced. At this time, even if the voltage introduced into the bathroom along the metal pipe is only 10 volts to 20 volts, it is fatal enough.

Without shielding and grounding, televisions, refrigerators and even telephones are time bombs. If you are not sure whether there are necessary lightning protection measures, then unplugging all electrical appliances is also a good emergency measure.