The cold weather is impacting parts of California and Oregon as fears grow that the polar vortex could cause temperatures to ...

Snow showers on Friday will linger over the Sierra as rain at lower elevations weakens in Northern California.

A Pineapple Express forms when the jet stream dips south into the tropical Pacific near Hawaii, scooping up warm, moist air ...

Claps of thunder hit Tuolumne County just south of Bear Valley on Thursday morning as snow began to accumulate across the Sierra Nevada foothills. A winter storm hitting Northern California prompted ...

After a relatively weak storm expected to arrive in L.A. late Thursday, forecasters say a potentially more powerful storm ...

A wind advisory was issued by the NWS San Francisco CA on Thursday at 4:32 a.m. valid from 10 a.m. until Friday 4 a.m. The ...

Two atmospheric rivers dumped heavy rain from the valley to the Sierra resulting in rises on area waterways. Here's how the ...

Two atmospheric rivers have ended Northern California's dry spell, bringing heavy rains and setting records in San Francisco.

California remains in the grip of an unrelenting atmospheric river delivering record-breaking rainfall, heavy mountain snow ...

Forecasters say 'Pineapple Express' storm will probably be beneficial for Los Angeles and Ventura counties, helping to reduce ...