How do harmless puffy white clouds grow into towering, potentially dangerous cumulonimbus thunderstorms? On their surface, clouds appear to be an odd contradiction of nature — light enough to float on ...

"In the summer, thunderstorms typically develop in the afternoon when the sun heats air near the ground," the weather service ...

During springtime in Houston, a steamy afternoon can quickly give way to towering cumulonimbus clouds overhead. Often called "popcorn storms," these cells bubble up quickly and fade just as fast. But ...