The average flash could light a 100-watt light bulb for more than three months.
Most lightning occurs within the cloud or between the cloud and the ground.
Your chances of being struck by lightning are estimated to be 1 in 600,000 but could be reduced by following safety rules. Most lightning deaths and injuries occur when people are caught outdoors. Most lightning casualties occur in the summer months and during the afternoon and early evening. Estimate the number of miles you are from a thunderstorm by counting the number of seconds between a flash of lightning and the next clap of thunder. Divide this number by 5.