On Thursday at 8:46 a.m. the NWS Sacramento CA issued a winter storm warning in effect until Friday at 4 a.m. The warning is for Shasta Lake and Mountains Southwestern Shasta County to Western Colusa County as well as Shasta County.

As a powerful winter storm moves into Northern California, foothill communities in Placer and Nevada counties are gearing up for heavy rainfall and strong winds.

Thousands of people have been told to evacuate areas of Los Angeles Friday as California's most powerful winter storm so far this season threatens to flash flood land scarred by massive wildfires.

In the Los Angeles area, the burn scars that carry the highest risk are those from the Eaton and Palisades fires from January and the Bridge fire from the fall.

An atmospheric river is expected to bring torrential rain to California this week, threatening parts of the state with flash floods and mudslides.

For the second time this year, Southern Californians are evacuating their homes as heavy rain threatens new destruction in areas still recovering from last month’s devastating wildfires.

The first wave of the strongest storm of the winter began hitting Southern California on Wednesday, but the most damaging rains are expected Thursday.