Lightning Safety

-A A +A

Lightning kills more Americans each year than tornadoes. At least 10 percent of lightning occurs when there are no clouds overhead, meaning that children and adults who spend time outdoors need to learn not to wait until the last minute to head for shelter. One rule of thumb is that if thunder can be heard, there is a risk of being struck by lightning

Lightning Safety in Outdoor Recreation

Practice and training increase recreation performance. Similarly, preparedness can reduce the risk of the lightning hazard. Lightning is the number one weather hazard impacting athletics events. Baseball, football, swimming, soccer, golf, horseback riding, fishing and boating . . . all these and other outdoor sports have been visited by lightning.

Education is the single most important means to achieve lightning safety. A lightning safety program should be implemented at every facility. The following steps are suggested:

1.) A responsible person should be designated to monitor weather conditions. Local weather forecasts - from The Weather Channel, or NOAA Weather Radio - should be observed 24 hours prior to athletic events. An inexpensive portable weather radio is recommended for obtaining timely storm data

2.) Suspension and resumption of athletic activities should be planned in advance. Understanding of SAFE shelters is essential. SAFE evacuation sites include:

          1.) Fully enclosed metal vehicles with windows up.

          2.) Substantial buildings.

          3.) The low ground. Seek cover in clumps of bushes.

3.) UNSAFE SHELTER AREAS include all outdoor metal objects like flag poles, fences and gates, high mast light poles, metal bleachers, golf cars, machinery, etc. AVOID trees. AVOID water. AVOID open fields. AVOID the high ground.

4.) Lightning's distance from you is easy to calculate: if you hear thunder, it and the associated lightning are within audible range…about 6-8 miles away. The distance from Strike A to Strike B also can be 6-8 miles. Ask yourself why you should NOT go to shelter immediately. Of course, different distances to shelter will determine different times to suspend activities. A good lightning safety motto is:
"If you can see it (lightning) flee it; if you can hear it (thunder), clear it."

5.) If you feel your hair standing on end, and/or hear "crackling noises" - you are in lightning's electric field. If caught outside during close-in lightning, immediately remove metal objects (including baseball cap), place your feet together, duck your head, and crouch down low in baseball catcher's stance with hands on knees.

6.) Wait a minimum of 30 minutes from the last observed lightning or thunder before resuming activities.

7.) People who have been struck by lightning do not carry an electrical charge and are:

  1. Safe to handle. Apply first aid immediately if you are qualified to do so. Get emergency help promptly.
  2. We assume no responsibility for weather hazards and     provides this disclaimer as a reminder that you should follow the above guidelines.

Lightning Safety

National Weather Service

In the United States, there are an estimated 25 million cloud-to-ground lightning flashes each year. While lightning can be fascinating to watch, it is also extremely dangerous. During the past 30 years, lightning killed an average of 73 people per year in the United States based on documented cases. This is more than the average of 68 deaths per year caused by tornadoes and the average of 16 deaths per year caused by hurricanes. However, because lightning usually claims only one or two victims at a time, and because lightning does not cause the mass destruction left in the wake of tornadoes or hurricanes, lightning generally receives much less attention than the more destructive weather-related killers. While documented lightning injuries in the United States average about 300 per year, undocumented injuries caused by lightning are likely much higher.

Lightning Safety Awareness: An Educational Problem

Few people really understand the dangers of lightning. Many people don't act to protect their lives, property and the lives of others promptly because they don't understand all the dangers associated with thunderstorms and lightning. The first step in solving this problem is to educate people so that they become aware of the behavior that puts them at risk of being struck by lightning, and to let them know what they can do to reduce that risk. Coaches and other adults who make decisions affecting the safety of children must understand the dangers of lightning.

Beware of a Developing Thunderstorm

Thunderstorms are most likely to develop on warm summer days and go through various stages of growth, development and dissipation. On a sunny day, as the sun heats the air, pockets of warmer air start to rise in the atmosphere. When this air reaches a certain level in the atmosphere, cumulus clouds start to form. Continued heating can cause these clouds to grow vertically upward in the atmosphere into "towering cumulus" clouds. These towering cumulus may be one of the first indications of a developing thunderstorm.

The Lightning Discharge: Don't Be A Part of It

During a thunderstorm, each flash of cloud-to-ground lightning is a potential killer. The determining factor on whether a particular flash could be deadly depends on whether a person is in the path of the lightning discharge. In addition to the visible flash that travels through the air, the current associated with the lightning discharge travels along the ground. Although some victims are struck directly by the main lightning stroke, many victims arestruck as the current moves in and along the ground. While virtually all people take some protective actions during the most dangerous part of thunderstorms, many leave themselves vulnerable to being struck by lightning as thunderstorms approach, depart, or are nearby.

An Approaching Thunderstorm: When Should I Seek Safe Shelter?

Lightning can strike as much as 10 miles away from the rain area in a thunderstorm. That's about the distance you can hear thunder. When a storm is 10 miles away, it may even be difficult to tell a storm is coming.


The first stroke of lightning is just as deadly as the last. If the sky looks threatening, take shelter before hearing thunder.

The 30-30 Rule

Use the 30-30 rule where visibilty is good and there is nothing obstructing your view of the thunderstorm. When you see lightning, count the time until you hear thunder. If that time is 30 seconds or less, the thunderstorm is within 6 miles of you and is dangerous. Seek shelter immediately. The threat of lightning continues for much longer period than most people realize. Wait at least 30 minutes after the last lightning flash before leaving shelter. Don't be fooled by sunshine or blue sky!

Outdoor Activities: Minimizing The Risk Of Being Struck

The greatest number of lightning deaths and injuries in the United States occurs during the summer months when the combination of lightning and outdoor summertime activities reaches a peak. During the summer, people take advantage of the warm weather to enjoy a multitude of outdoor recreational activities. Unfortunately, those outdoor recreational activities can put them at greater risk of being struck by lightning. Those involved in activities such as boating, swimming, fishing, bicycling, golfing, jogging, walking, hiking, camping, or working out of doors all need to take the appropriate actions in a timely manner when thunderstorms approach. Where organized sports activities are taking place, coaches, umpires, referees, or camp counselors must protect the safety of the participants by stopping the activities sooner, so that the participants and spectators can get to a safe place before the lightning threat becomes significant. To reduce the threat of death or injury, those in charge of organized outdoor activities should develop and follow to a plan to keep participants and spectators safe from lightning.

Indoor Activities: Things To Avoid

Inside homes, people must also avoid activities which put their lives at risk from a possible lightning strike. As with the outdoor activities, these activities should be avoided before, during, and after storms. In particular, people should stay away from windows and doors and avoid contact with anything that conducts electricity. People may also want to take certain actions well before the storm to protect property within their homes, such as electronic equipment.

If Someone is Struck, What Do I Do?

In the unfortunate event that a person is struck by lightning, medical care may be needed immediately to save the person's life. Cardiac arrest and irregularities, burns, and nerve damage are common in cases where people are struck by lightning. However, with proper treatment, including CPR if necessary, most victims survive a lightning strike, although the long-term effects on their lives and the lives of family members can be devastating.

Have A Safe Summer!

Lightning is a dangerous threat to people in the United States, particularly those outside in the summer. With common sense, we can greatly reduce the number of lightning deaths. When thunderstorms threaten, get to a safe place, stay there longer than you think you need to, stay away from windows and doors and avoid contact with anything that conducts electricity. Have a safe and enjoyable summer.