California Braces for Historic 10-Day Rain Barrage

California is bracing for an "onslaught of atmospheric rivers" expected to bring historic levels of precipitation over the next 10 days. Forecasters predict that the state could receive as much as 20 to 30 inches of rain, primarily in the Sierra Nevada mountains, due to a powerful "firehose of moisture" aimed directly at the coast. This intense rainfall raises serious concerns for flooding and landslides, especially in areas that have recently experienced wildfires.

These storms are shifting south after drenching the Pacific Northwest. Heavy rain and high winds are forecast for Northern California starting Wednesday, with showers expected to lessen in the afternoon. By Friday, the systems will move into southern Oregon and Northern California, particularly north of the Bay Area. The heaviest rainfall is anticipated over the weekend, with western Oregon and Northern California, including Siskiyou and coastal ranges, potentially seeing up to 5 inches.

Existing flood-prone areas in Washington, such as along the Skagit River, could experience secondary crests, though not as severe as last week's levels. The National Weather Service is warning of major holiday travel hazards due to the expected heavy rain leading up to Christmas. Residents in all affected regions are advised to prepare for significant weather impacts during the holiday period.