Thunderstorms often begin to develop early in the day when the sun heats the air near the ground and pockets of warmer air start to rise in the atmosphere. When these pockets of air reach a certain ...

A thunderstorm with cloud to ground lightning rages during the day in China on July 21, 2025. CREDIT: Photo by Liu Wei/Xinhua via Getty Images. Get the Popular Science daily newsletter💡 Breakthroughs ...

After an unseasonably warm day Saturday with high temperatures in the upper 60s with plenty of sunshine, conditions started to change Sunday before a significant drop in temperatures arrives for next ...