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Winter Storm Warning California: Up to 18 Inches of Snow, High Winds Hitting Mountain Passes

By CALWIRE Weather Desk — Thursday, October 29, 2026
By CALWIRE Weather Desk  |  PUBLISHED: Thursday, October 29, 2026
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A Winter Storm Warning is in effect across California mountain areas, and conditions are getting ugly fast. Early reports point to snowfall totals that could reach 18 inches in the hardest-hit zones, with wind gusts up to 35 mph making travel through mountain passes genuinely dangerous. The warning runs through Friday, according to reports.

Related: Post-Tropical Cyclone Rachel Hits San Diego: Coastal Flooding, High Winds and Heavy Rain · Stabbing at Pleasant Grove High School in Elk Grove: 2 Hospitalized, 1 Detained

If you've got a trip planned over the Sierra Nevada or any other major California mountain corridor this week, now's the time to check road conditions before you go. Chains may be required, and some routes could see closures depending on how the storm tracks. This is a developing story and details are still coming in.

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Forecasters are warning drivers not to underestimate this one. Up to 18 inches of snow combined with near-gale-force winds means low visibility, drifting snow, and icy roads well into the end of the week.

What We Know So Far

The Winter Storm Warning covers areas that could see anywhere from 15 to 18 inches of snow before conditions improve. Winds of 35 mph are expected to push that snow around and cut visibility sharply. No specific pass closures have been confirmed in early reports, but conditions are expected to deteriorate as the storm moves through.

See also: TWO TEEN GIRLS ACCUSED IN MASS SHOOTING PLOT AT CALIFORNIA HIGH SCHOOL · Beach Hazards Statement Orange County Coast: What to Know as Post-Tropical Storm Rachel's Effects Linger

Travel Advice Right Now

Caltrans urges drivers to check quickmap.dot.ca.gov for live road conditions before heading into the mountains. If you don't need to travel, stay put until the warning lifts Friday. If you do have to drive, carry chains, extra water, and a blanket. Don't assume all-wheel drive is enough in 18-inch snow with 35 mph gusts.

What's Next

This is a developing story. Snow totals, affected passes, and road closures may change as the storm progresses. Check back for updates as conditions evolve and officials release more information.

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Filed Under: Weather Winter Storm Warning California