A Research Guide for Students by I Lee

Wall Street Executive Library Feature Site - This is not an ad but a 

link to a world of wonderful resources.
Reference  Site Map
     
Google
 
     

Lightning Is a Hidden Killer

By Dr. Peter W. Kujtan, B.Sc., M.D., Ph.D.

Article originally appeared on page 15 in May 24-25, 2003 issue,
reprinted on page 14 in June 12-13, 2004 issue,
and reprinted on page 19 in June 11-12, 2005 issue of
The Mississauga News under the feature: Health & Wellness, Medical Matters.

As a Coroner, one of the saddest and potentially preventable death investigations that I encounter involves lightning deaths. Foolish disregard exists on our sports fields about this naturally occurring killer. There are at least 2000 thunderstorms and at least 100 bolts per second occurring on our planet at any given moment. Statistically, Ontario victims tend to be males involved in recreational activity who often ignore severe weather watches. Some 500 people will be struck by lightning in North America this year, and 30% will be fatal. Victims of minor strikes often don't realize or report it. Just ask my daughter Lesia and her friends who tried to finish a baseball game before "the rain came" and found their teeth buzzing, hair standing on end and tingling all over. The amusement was terminated by a quick flash and loud thunder. Everyone was fine, but it took days to piece together what happened. The greatest danger in our community comes from killer bolts. Lightning can kill before the rain starts! Examples abound of people being struck while watching distant storms believing it to be safe.

Just ask any pilot where the danger lies, and he or she will point ahead of the storm. As a quickly moving storm front approaches, the air ahead of and behind it gets a friction supercharge. This can result in "KILLER BOLTS" being launched ahead and also behind the storm front. These bolts have been known to travel as far as 12 km. They kill without rain and sometimes during a "sunny game". In cases with supervising adults present, be they coaches or golf starters, all claimed ignorance as a defense. Environment Canada issues regular weather warnings. No one has more respect for lightning than Texans and those living in the tornado belt. They use a simple rule: If you see lightning and hear thunder within TWENTY seconds, you are inside the five mile strike zone and need to find shelter fast. Rain has little to do with it. I am shocked that sports activities are called off only when the rain starts. There is a pressure in our fast-paced society to not postpone or cancel things. There is no safety in numbers, only ignorance. Employ the 20 second rule; take your children and your friends off the fields and leave. Cars tend not to get hit due to the rubber tires and can provide refuge. Wait 30 minutes after the last thunder sound to resume play or venture outdoors.

Lightning is a discharge of static electricity from clouds. The temperature in a bolt reaches 25,000 degrees Celsius. Bolts are attracted to objects or groups of objects offering little resistance. They may enter the body through a small metal entrance way such as a steel rivet in a hat, chain, ring, or zipper. The bolt will exit the body close to the ground. This force is tremendous and results in footwear being blown off. On its journey through the body it will sear, mangle and vaporize tissue. A victim may appear normal on the exterior, but have severe internal injuries. One survival strategy is to discard all metal and stay curled on the ground if you feel the tingling of an imminent strike, in the hopes that it will pass over your body surface and into the ground. The electrical charge is capable of stopping the heart. It is safe to immediately approach a victim and begin resuscitation. Surprisingly, many people are capable of surviving the strike with proper aid.

The enjoyment of sport must be tampered with a regard for safety. Please ensure that the adults supervising on our sports fields are aware of this hazard and how to recognize the danger zone. I consider it bordering on the criminal to openly endorse policies that require children to demonstrate a presence on a sports field during inclement weather, be in rain or heat to qualify for cancellation. Ignoring common sense will result in guilt, sorrow and regret that last a painful lifetime. What does one tell a parent whose child needlessly perished because the responsible adult "was just following rules"?? One death or injury from lightning during a sporting event is one too many. The rule of thumb is simple. If you can see lightning and hear thunder, it can kill you. Sufficient time must be allowed to reach safety.

Ontario recorded at least 5 new lightning victims in the last week alone. Lightning is the most common unexpected adverse weather threat in our region. The number of people that remain uninformed of this fact and play lightning roulette with their friends and children is astounding. Severe thunderstorm watches are seen as curious news items and continue to be ignored, particularly by recreational sport organizations. The rule is simple, the ability to see a bolt of lightning signals danger and you should move indoors immediately. There is no such thing as waiting for it to get "closer".

Q & A:

Dr. Kujtan has responded to the two questions received via Research Guide Search This Site:

Q: Where does lightning enter and exit the body?

A: There are no set entry points. Lightening will enter at the point of least resistance and exit in a similar fashion. That entry point could be moist surface, i.e. wet hands or hair ... metal, such as that found in a cap.

Q: Do sneakers help during a thunderstorm?

A: The charge is far too great for sneakers to have any benefit.


See also:

Previous Article     Next Article     Other Articles by Dr. Kujtan



1