What is Lightning and What's the Worst Place to Watch a Thunderstorm

Lightning.

At any given time there are 2000 thunderstorms in progress around the world releasing 100 lightning bolts every second. A lightning bolt unleashes 20 million volts of electricity and heats the air around it to 50 thousand degrees, that's five times hotter than the surface temperature of the sun. Every year there are a hundred or so lightning related deaths, several hundred more people injured, and millions of dollars of property damage just in the United Stated along.

Exactly what lightning is and how it's caused has been a mystery for thousands of years. Ben Franklin with his infamous kite was the first to prove that lightning is electrical. Of course if old Ben was so terrifically smart, why was he out in the middle of a storm holding on to a metal wire attached to a kite? Makes ya wonder.

Lightning is caused by the separation of negative and positive charges in different regions of a cloud. Ice particles in the cloud grow, break apart and collide. The smaller ice particles acquire a more positive charge and the larger particles a negative charge. The smaller particles are lighter and have a tendency to be carried up into the higher regions of the cloud. The larger particles are heavier and accumulate in the lower regions of the cloud. When the electrical potential (the difference between the negative and positive charges) within the cloud and between the cloud and the ground, is great enough, the electrical resistance in the atmosphere breaks down and the flash begins. Lightning is the electrical discharge, think of it as Mother Nature restoring order.

Thunder is produced by the heating of the air along the electrical current and occurs simultaneously with the lightning flash. Sound travels much slower than light, so the farther away the lightning is, the longer the delay between the lightning flash and the thunder. You can guess roughly how far away a strike is by counting the seconds between when the flash is seen and when the thunder is heard. For every five seconds counted, the lightning is a mile away. If you see the lightning at the same time you hear the thunder, odds are: you're toast.