When Lightning Strikes

Ever had a close call with a lightning bolt? In the United States, there are an estimated 25 million lightning flashes each year. Most of them happen in the summer months.

While lightning strikes are rare, they still pose a danger. Lightning kills about 62 people each year in the US, and injures at least 300 more. Some of these injuries and deaths could be prevented with planning and caution.

What happens when you are struck by lightning?
Some people survive lightning strikes with only minor injuries while others have long-lasting health problems. A lightning strike may not cause visible burns or other injuries, but you can have burns inside your body, to the organs and internal tissues.

Lightning strikes can also cause:

• Loss of eyesight
• Hearing loss
• Seizures
• Paralysis
• Cardiac arrest (heart stops beating)

Long-term effects can include:

• Cataracts (should be checked months after strike)
• Sleep disturbances
• Memory problems and headaches
• Irritability and fatigue
• Joint stiffness and muscle spasms
• Dry eyes

If lightning appears far away, am I safe?
Lightning can strike as far as 10 miles from where it is raining. If you hear thunder, you are probably at risk even if you don't see lightning.

Five ways to prevent lightning strikes

1. If you plan to be outdoors, check the local weather forecast, and keep an eye on the weather. Avoid outdoor activities during a thunderstorm.
2. Avoid tall structures, such as isolated trees and flagpoles. Don't be on or near the water during a thunderstorm.
3. If you are outside before or during a lightning storm, find shelter as soon as you can. An insulated building with plumbing and wiring is better than an open shed. If there's no building close by, seek shelter in a hardtop vehicle (not a convertible). Don't touch any metal inside the vehicle.
4. When inside, turn off and stay away from electrical appliances, fireplaces, televisions, computers and power tools. Do not use the telephone.
5. Wait 30 minutes from the last lightning flash before going outside.

What should I do if someone is struck by lightning?
Call 911. With the right treatment, including CPR if necessary, most people survive a lightning strike. You are in no danger helping a lightning victim. The electrical charge will not affect you.

Related Articles First Aid for Common Emergencies What Do You Know About CPR?

External Source National Weather Service. Lightning-the underrated killer. Accessed July 25, 2007.

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