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How to determine the distance to the epicenter of Rain
To determine the approximate distance to the epicenter of the storm, can be made quite simple calculations. It is known that light travels at about 300,000 kilometers per second, which is almost immediately you will see a flash of lightning. But sound propagates in air at about 330 meters per second. Therefore, immediately after the lightning flash or need to measure the time of thunder, or just moderately reckon. Multiplying the number of seconds for 330, you'll know about the distance to the epicenter of the storm.
If a flash of lightning and the rumble of thunder came together, it means that you are in the midst of the storm, and we should take all safety precautions!