Thunder then Lightning or Lightning then Thunder?
- rhwette2022
- Jul 22, 2025
- 1 min read
Updated: Aug 24, 2025

🌩️ Why do we see lightning before we hear thunder?
Next time a storm rolls in, try this cool trick: Count the seconds between the flash of lightning and the boom of thunder. Then divide by 5.
That gives you an estimate of how many miles away the lightning struck!(Example: 10 seconds ÷ 5 = 2 miles)
Why does this work?
⚡ Light travels super fast— so fast that we see the flash almost instantly.🔊 Sound travels slower— about 5,000 feet per second—so thunder takes time to reach us.
💥 So what is thunder, anyway?
When lightning streaks through the sky, it heats the air to over 30,000°C (54,000°F) in less than a second! That sudden heat causes the air to explode outward, creating a shockwave—that’s thunder!
⚡ But how does lightning happen in the first place?
As storm clouds form, tiny ice particles bump into each other and create electrical charges. The cloud becomes like a giant battery:– Positive charges gather at the top– Negative charges collect at the bottom.
When the difference becomes too great, zap! A giant spark—lightning—jumps through the air, either between clouds or down to the ground.
Storms may be noisy and dramatic, but they’re full of fascinating science!
📏✨ So next time you see a flash, start counting—science is in the air!

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