In a typical summertime thunderstorm, warm, moist air rises rapidly into the atmosphere, where it hardens into ice crystals, ...

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 ...

With the latest storm on its way, the city of Pasadena is bracing for the possibility of lightning and thunder during the annual Rose Parade. Nicole Comstock reports. NASA astronauts to return from ...