• I think it's caused by storm clouds crashing together. They are like . . . in a fight. • Thunder follows lightning. It's an echo to lightning which really doesn't have a sound at all. Ruby Kollman, ...

AUSTIN (KXAN) – Have you ever wondered why thunder can have different sounds? A crack versus a rumble? Startlingly loud versus calmingly low? Let’s dive in … The basics: what is thunder? Electrical ...

(WLUK) -- If you were jolted awake early Wednesday morning as a line of storms rolled through Green Bay and the Fox Valley, you probably weren't alone. And there's a good reason why that thunder might ...