Quick Answer
Open terrain is riskier during thunderstorms because it offers little protection against lightning strikes, and the open space allows lightning to strike the ground at a closer distance. This increases the danger of being hit directly. The risk is even higher if you're in a low-lying area or near a body of water.
Lightning Strikes and Distance
When a lightning bolt strikes the ground, it can create a conductive path for subsequent strikes. Open terrain allows lightning to strike the ground at a shorter distance, increasing the risk of being hit directly. In general, the safe distance from a lightning strike is about 100 yards or more. However, if you’re in an open area, the strike can occur much closer, and the risk of being hit increases exponentially.
Terrain Features and Risk Factors
Low-lying areas, such as valleys, depressions, and bodies of water, are particularly hazardous during thunderstorms. These areas tend to attract lightning due to their unique topography and the presence of conductive water. Additionally, metal objects, such as fences, power lines, and golf clubs, can conduct electricity from a lightning strike, increasing the risk of injury or death. When in an open area, look for natural features that can provide some protection, such as hills, forests, or rocky outcroppings.
Safety Techniques for Open Terrain
If you find yourself in open terrain during a thunderstorm, follow these safety techniques: stay low, avoid being the tallest object, and crouch down with your feet together. This will reduce your risk of being struck by a lightning bolt. Avoid seeking shelter under trees, power lines, or other conductive objects, as these can increase the risk of injury. Instead, seek shelter in a sturdy building or a hard-topped vehicle with the windows closed.
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