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Violent storm, dark clouds, lightning

Severe winds, heavy rains, and dark cloud cover may be signs of the imminent cloud-to-ground lightning.The easiest way to determine when a thunderstorm will arrive: When you hear thunder, you can judge the distance between its location and the lightning strike by calculating the length of time between seeing the lightning.Since the speed of light is about 1 million times faster than the speed of sound, there will be a certain time difference between lightning and the accompanying thunder.If the time interval between seeing lightning and hearing thunder is 5 seconds, it means that the lightning strike occurred at a position about 1.5 kilometers away from you; if it is 1 second, that is, if you hear thunder in the blink of an eye, it means that the location of the lightning strike is right. It’s 300 meters near you.When encountering a thunderstorm, remember whether the time interval between hearing the thunder and seeing the lightning is getting longer or shorter each time, so as to judge whether the thunderstorm is gradually moving away or getting closer. .