Thunderstorms are phenomena that both impress and frighten. Although they are part of typical storm landscapes, they continue to raise questions about what to do when lightning lights up the sky and thunder is heard.
According to Notícias ao Minuto, a thunderstorm forms when three elements combine: atmospheric instability, high humidity and the rise of air masses. The passage of cold fronts, like the one that crossed the continental territory this week, often creates ideal conditions for the phenomenon, responsible for thousands of electrical discharges in a few hours.
According to the municipal Civil Protection service, it is essential to adopt safe behavior during these storms, whether indoors or outdoors.
At home
The first step is to move away from anything that can conduct electricity. Pipes, metal doors, windows with metal frames, bathtubs or sinks should be avoided.
It is also not recommended to use the shower or use electrical devices such as computers, televisions or landline telephones. Contact with electrical plugs and cables increases the risk of discharge.
Not outside
If the interval between the lightning and the sound of thunder is less than 30 seconds, thunder is close. In this case, seek shelter immediately.
According to the same source, it should not remain in high places, open fields or near isolated trees. Communication towers, electricity poles, tents and metal structures should also be avoided.
Large buildings are the safest shelters. If you are on a mountain or steep terrain, you should sit on a rock or other non-metallic object, with your head down and your hands on the ground.
Cars with fully closed windows offer good protection, but it is important not to touch metal parts. Convertible vehicles and golf carts, on the other hand, are dangerous. Lakes, rivers and swimming pools should be avoided until the storm dissipates.
Civil Protection reminds us that lightning can persist for more than half an hour after the last thunder, even if the sky appears clear.
How to calculate the distance of the thunderstorm
There is a simple way to understand how far away a thunderstorm is. Count the seconds between the lightning and the thunder and multiply by 340, the speed of sound in the air. The result indicates the distance in meters. For example, if you count ten seconds, the discharge occurred about 3.4 kilometers away.
According to , specialized in current information, understanding how to react in these situations is essential to avoid accidents. According to the same source, prevention continues to be the most effective way to face the unpredictable power of thunderstorms.
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