how to tell how close a thunderstorm is
June 26th, 2007
It is actually very easy to calculate how close a thunderstorm is. Basically, for every 5 seconds between the sight of lightening and the sound of thunder, the storm is one mile away.* So for example, if you count 30 seconds between lightening and the sound of thunder, the storm is 6 miles away.
*Info obtained from the June 8-10 edition of USA Weekend, in the Weather Quiz.
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