Lightning: Fact vs. Friction

You’ve probably heard the old proverb that **lightning never strikes the same place twice**. In reality, this is one of the most dangerous myths in meteorology. Lightning is essentially a massive static discharge looking for the **path of least resistance** to the ground. If a location was a good target once, it’s likely still a good target.

Take the **Empire State Building** in New York City, for example. It isn't just hit twice; it is struck by lightning roughly **25 times every year**. Because it is a tall, conductive needle reaching into the sky, it provides an easy shortcut for the electricity to reach the earth.

Lightning doesn't have a memory; it’s just physics. Tall, pointy, and isolated objects—like towers, trees, or even a person in an open field—act as **conductors** that attract the 'stepped leaders' coming down from the clouds. If you’re in a storm, never assume a spot is 'safe' just because it was already hit.

Many people believe they are safe inside a car because the **rubber tires** insulate them from the ground. Let’s look at the math: a lightning bolt has just traveled through miles of air, which is a fantastic insulator. If millions of volts can leap through kilometers of sky, a few inches of rubber tires won’t even slow it down!

So why are you actually safe in a car? It’s thanks to something called a **Faraday Cage**. When lightning hits a metal vehicle, the electricity travels along the **outer metal shell** rather than through the interior. This is known as the 'skin effect.' The charge is diverted around you and into the ground via the frame.

This means you are only safe in a **hard-topped metal vehicle**. If you’re in a convertible with a fabric roof, a fiberglass car, or on a motorcycle, you have no 'cage' to protect you. In those cases, the rubber tires are definitely not going to save the day.

Think you’re safe because the sun is shining and the storm is miles away? Think again. One of the most terrifying phenomena in nature is the **'Bolt from the Blue.'** These are lightning strikes that can travel horizontally away from a storm cloud for **up to 25 miles** before arching down to hit the ground.

These strikes usually originate from the top of the storm cloud, known as the **anvil**. Because they travel so far through clear air, they often catch people completely off guard. Even more dangerous, these 'positive' lightning strikes are often significantly **more powerful** and hotter than the typical negative strikes that happen directly under the rain.

The safest rule to follow is the **30/30 rule**: if you see lightning, count the seconds until you hear thunder. If it’s 30 seconds or less, you are within striking distance. More importantly, wait 30 minutes after the last clap of thunder before heading back outside.