Does Counting Thunder Actually Work? | Smartest Year Ever (Oct 24, 2025)

Does counting the seconds between lightning and thunder actually tell you how far away a storm is? 🌩️ In this episode, Gordy breaks down the science behind thunder, the physics of sound vs. light, and why that old “One Mississippi” trick actually works — sort of. Discover how Benjamin Franklin, Count Volta, and modern meteorologists all helped turn a childhood storm superstition into a surprisingly accurate way to measure storm distance.

Learn how sound speed changes with temperature, humidity, and altitude — and why a thunderclap can sound like a growling monster one moment and a cannon blast the next. You’ll never look at a lightning storm the same way again.

So next time you hear thunder, remember: you’re casually calculating the difference between light-speed and sound-speed physics, one Mississippi at a time.

#ScienceFacts #WeatherExplained #Lightning #Thunder #StormFacts #DailyFacts #FunFacts #SmartestYearEver Music thanks to Zapsplat.

Sources: • National Weather Service. (n.d.). The 30/30 Rule. https://www.weather.gov/safety/lightning-faq • NASA Earth Observatory. (n.d.). Why Thunder Rolls. • National Oceanic and Atmospheric Administration. (n.d.). Lightning Science: Five Striking Facts. • Franklin, B. (1752). Experiments and Observations on Electricity. London: E. Cave. • Encyclopaedia Britannica. (n.d.). Speed of Sound. • Royal Meteorological Society. (n.d.). Estimating Lightning Distance by Counting Seconds.