Thunderstorm clouds have a lot of air moving around inside them, including updrafts and downdrafts, which can be strong. Updrafts transport tiny drops of rain and ice crystals to the top of the ...

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 ...

When thunder roars, head indoors. Lightning is one of the fastest and most dangerous weather threats, and it can strike miles away from a storm. If you can hear thunder, you’re close enough to be hit.

Lightning is one of the leading weather-related killers in the United States. Understanding the risks and knowing what to do can help prevent injuries and save lives. Lightning can strike several ...

An incoming low-pressure system that is supposed to bring the Bay Area its most significant rain since February — and thunder ...

Morning showers and a chance of thunderstorms in Sacramento; clearing and warmer by Thursday. Sierra passes will see snow and ...

Mainly dry weather tonight but shower chances grow early Saturday morning.