The lightning associated with the thunderstorms we experience predominately during our summer months can be deadly. Florida leads the nation in lightning-caused deaths with about 10 a year - almost twice than any other state. Most of these people happened to be in open areas, such as beaches. Many people know to seek shelter once the storm clouds are overhead. Few realize, however that one of the most dangerous times for a fatal strike is before the storm arrives. Lightning can strike up to 20 miles away from the rain area of a thunderstorm, seeming to occur 'out of the clear blue sky' or when the sun is shinning. These ' bolts of blue' account for many fatalities. Lifeguards will clear and close all swimming and beach areas well before the storm arrives. It is very important to cooperate and follow the directives of the lifeguard during this period. Another time underestimated for its potential danger is at the end of a thunderstorm. This is why a beach which has been closed will not re-open immediately after a storm has passed and the sun comes out.
To estimate the distance lightning is from you use the 'Flash to Bang' formula. When you see a flash of lightning begin counting (1 missippippi, 2...,etc.) after hearing the thunder take the number you've counted and divide it by 5.This will give you have the approximate distance in miles the lightning is from your location. Here's an example. After spotting a flash of lightning you count to 10 and then hear the thunder- the lightning strike was 2 miles away (10/5=2).
The safest place to be if you are at the beach during a thunderstorm is in your car. Simply going under an open-sided shelter with a roof, such as a beach pavilion will not guarantee your safety.
Information provided by National Weather Service |