Thunderstorm chances increase on Wednesday and Thursday across Northern California. These storms could be strong and a few ...

As severe thunderstorms roll across California, the possibility of funnel clouds or a tornado can't be ruled out. A portion ...

A storm that moved into Northern California overnight is resulting in power outages, flooded roads and downed tree limbs.

A lot of weather will be impacting Northern California through the holiday, with valley winds and thunderstorms, and heavy Sierra snow.

On Wednesday at 3:05 a.m. the NWS San Francisco CA released an updated severe thunderstorm warning in effect until 3:15 a.m.

Portions of Northern California are bracing for a powerful atmospheric river storm beginning Tuesday night, with forecasters warning that the system is expected to be more disruptive due to its ...

The National Weather Service issued San Francisco with a tornado warning on Saturday, the first in the city's history. ABC7 News Meteorologist Lisa Argen says the closest San Francisco ever got to ...

A strong storm system known as a bomb cyclone is lining up to slam the U.S. on Christmas Eve, possibly complicating holiday travel and bringing gusty winds that could cause power outages.