One of the most interesting things I love about lightning is the rolling thunder that follows. Actually, as I write this I can hear the majestic thunder echo behind me. Some wonder where and how the lightning makes such a sound. It seems right for lightning to have thunder follow it but it is slightly more complicated than that.

Thunder

Because lightning is so hot and fast it actually heats up the air in front of it, leaving a sort of vacuum path to follow. The lightning follows this path but, because of the vacuum made, the path has to be filled with air very fast for a vacuum cannot exist in an opened environment. When that air fills the vacuum it gives off the resounding thunder. This was spoken of by in Job 28:26:

When He made a decree for the rain, and a way for the lightning of the thunder.

Amazing that Job knew about that thousands of years before people figured out about the making of this thunder.

That sound, traveling from the point where it was sucked in, travels more than 700 miles per hour and will reach you at a determined time picked out by the distance from you and the lightning. If you count the time from when the lightning strikes and when you hear it and then divide those seconds by five you have the mileage of how far away the lightning was.

When I found that out I was pretty frightened as I have heard thunder moments after seeing the lightning.