A thunderstorm can look deceptively simple from the ground. Dark clouds gather, the wind changes, rain begins to fall and suddenly the sky flashes with lightning. But inside that enormous cloud, an ...

Add Yahoo as a preferred source to see more of our stories on Google. A derecho is a large cluster of thunderstorms that most commonly forms in late spring and summer, and causes widespread ...

For the first time, researchers have observed and measured weak electrical discharges, known as coronae, on trees during thunderstorms. A new study describes the near-invisible sparkles appearing ...

The sky was a very dangerous place in the early days of commercial aviation. By flying into storms to learn how they worked, these experts made air travel and weather forecasting much more predictable ...