What is an 'onslaught of atmospheric rivers' hitting California?

It refers to a series of intense storm systems expected to bring a significant amount of rain and moisture to California over a 10-day period.

How will these storms affect California's holiday travel?

The National Weather Service predicts major holiday travel hazards due to heavy rain, potentially impacting journeys around Christmas.

What risks are associated with the heavy rainfall in California?

The primary risks include widespread flooding and landslides, particularly in areas that have recently experienced wildfires.

Home / Environment / California Braces for Historic 10-Day Rain Barrage

California Braces for Historic 10-Day Rain Barrage

17 Dec

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Summary

California may receive up to 20-30 inches of rain in 10 days.
Flooding and landslides are possible in areas affected by recent wildfires.
Major holiday travel disruptions are anticipated due to severe weather.

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.