Relying on your eyes and ears is a most dangerous way to flirt with the awesome power of thunderstorms. As the diagram shows, the average size of a thunderstorm cell is four to six miles in diameter. And, while lightning strikes do emanate from within a storm cell directly overhead, warning you to stay inside, the most dangerous strikes emanate from the outer edges of the cell, and can strike from up to 10 miles away. This "POINT OF DANGER," due to topography, buildings and other obstructions in the area, is both invisible and inaudible.
On average, thunder can only be heard from a distance of 2 to 4 miles. Lightning can strike up to 10 miles from the outer edges of a cell. This occurs most often from the leading and trailing edge of a storm cell. This means that by the time you hear the first clap of thunder, you’ve been at risk from a direct hit from lightning for 30 minutes or more, depending on the speed of the storm.
Calculating the distance of a thunderstorm by counting seconds between lightning and thunderclap is a false and dangerous premise. Calculating the distance to a thunderstorm this way only works in situations where you are already at risk from a direct lightning strike.
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You could actually be standing in front of the Empire State Building, and be the victim of a strike "Out of a Clear Blue Sky" from the edge of a storm over Newark, N.J. You wouldn’t have seen it, and you couldn't have heard it. And the same dangerous fact is true about strikes from the trailing edge. This is why 60% of injuries and fatalities occur after it seems a storm has passed.
 ThunderBolt Storm Detector will warn you about what’s coming your way, and give you ample time to get safe, and remain safe until ThunderBolt Storm Detector tells you the danger has passed.
The text messages of ThunderBolt Storm Detector are easy to understand and are designed to warn you about each of these dangerous situations. By detecting storms well in advance of their arrival, you will have the time necessary to get safe and stay safe until the danger has passed.
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