Indoor/Outdoor Swimming Pool Safety
Lightnings behavior is random and unpredictable.
We recommend a very conservative attitude towards it. Preparedness and
quick responses are the best defenses towards the lightning hazard.
Swimming pools are connected to a much larger surface area via underground
water pipes, gas lines, electric and telephone wiring, etc. Lightning
strikes to the ground anywhere on this metallic network may induce shocks
The National Lightning Safety Institute recommends the following swimming
pool safety procedures:
- Designate a responsible person as the weather safety lookout. That
person should keep an eye on the weather. Use a "weather radio"
or the Weather Channel or other TV program to obtain good localized
advanced weather information.
- When thunder and/or lightning are first noticed, use the Flash-To-Bang
(F-B) method to determine its rough distance and speed. This
technique measures the time from seeing lightning to hearing associated
thunder. For each five seconds from F-B, lightning is one mile away.
Thus, a F-B of 10 = 2 miles; 15 = 3 miles; 20 = 4 miles; etc. At
a F-B count of thirty, the pool should be evacuated. People should
be directed to safe shelter nearby.
- Pool activities should remain suspended until thirty minutes after
the last thunder is heard. The distance from Strike A to Strike B
to Strike C can be some 5-8 miles away. And it can strike much farther
away. Why take a chance with lightning?
Teach this safety slogan:
"If you can see it, flee it; if you can
hear it, clear it."
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Prepared by the
National Lightning Safety Institute, Louisville,