What is the National Weather Service warning for California this Christmas?

The National Weather Service has issued a winter storm watch for California's Sierra Nevada and southern Cascades, forecasting up to four feet of snow and potential flooding.

Will Christmas travel be affected by the California storm?

Yes, holiday travel is expected to be severely disrupted with difficult to impossible driving conditions, potential road closures, and extended delays.

What are the specific risks associated with the Sierra Nevada storm?

Risks include heavy snowfall, whiteout conditions from high winds, slick roads, rockslides, mudslides, and flooding in low-lying areas.

Home / Weather / Sierra Snowstorm Threatens Christmas Travel

Sierra Snowstorm Threatens Christmas Travel

20 Dec, 2025

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Summary

Up to four feet of snow expected in California's Sierra Nevada.
Flooding and high winds pose risks to travelers and infrastructure.
Travel may be impossible; drivers urged to carry emergency kits.

Sierra Snowstorm Threatens Christmas Travel

A significant winter storm is expected to bring heavy snowfall and potential flooding to California's mountainous regions, impacting Christmas travel. From Tuesday night through Friday morning, elevations above 5,500 feet in the Sierra Nevada and southern Cascades could receive up to four feet of snow, with gusts reaching 50 mph.

This harsh weather is projected to cause hazardous driving conditions, including slick roads, reduced visibility, and potential road closures, particularly affecting Interstate 80 and Highway 50. Simultaneously, a flood watch is in effect for several valleys and foothills due to anticipated heavy rainfall, raising concerns about rockslides and urban flooding.

Authorities are strongly advising residents and travelers to postpone journeys if possible. For those whose travel is unavoidable, carrying winter emergency kits is crucial. Drivers are also urged to check real-time road conditions and prepare for extensive delays.