Sierra Nevada Braces for Major Winter Storm, Shutting Down Travel

Up to 4 feet of snow expected to blanket Northern California mountain passes by the weekend.

Apr. 9, 2026 at 8:25pm

Got story updates? Submit your updates here. ›

A vast, atmospheric landscape painting depicting the towering, snow-capped peaks of the Sierra Nevada mountains, with the winding roads and valleys below obscured by heavy snowfall and dramatic lighting, conveying the overwhelming power of the impending winter storm.As a powerful winter storm bears down on the Sierra Nevada, the region braces for treacherous travel conditions that could shut down key mountain corridors for days.Quincy Today

A powerful winter storm is set to deliver heavy snowfall to the Sierra Nevada mountains in Northern California starting Friday evening, with travel conditions expected to rapidly deteriorate. The National Weather Service has issued a Winter Storm Warning, with widespread totals of 1 to 2 feet of snow above 4,500 feet and the potential for 3 to 4 feet at the highest elevations. Even lower elevations near 4,000 feet could see 2 to 4 inches of snow, creating hazardous driving conditions on key corridors like Highway 70 and Interstate 80.

Why it matters

The Sierra Nevada mountains are a major transportation hub for Northern California, with several vital highways and interstates that connect the Central Valley to Lake Tahoe and other popular winter destinations. Shutting down these routes due to heavy snowfall can have significant economic and logistical impacts, disrupting supply chains, tourism, and daily commutes for residents.

The details

The storm is expected to intensify on Saturday, with snowfall rates increasing and snow levels dropping to near 4,000 feet by Sunday. Gusts up to 50 mph may lead to blowing snow and sudden whiteout conditions, making travel difficult to impossible at times. Officials warn that the Friday evening commute could be impacted early, but the most dangerous conditions will arrive Saturday into Sunday as snow levels fall and accumulation accelerates.

  • The Winter Storm Warning remains in effect through 11 p.m. Sunday for the West Slope Northern Sierra Nevada and Western Plumas County.
  • Steady snowfall is expected to begin accumulating above 4,500 feet starting Friday evening.
  • By Saturday afternoon, the storm is expected to intensify, with snowfall rates increasing and snow levels dropping to near 4,000 feet by Sunday.

The players

National Weather Service in Sacramento

The National Weather Service office that issued the Winter Storm Warning for the Sierra Nevada region.

Got photos? Submit your photos here. ›

What they’re saying

“Travel across Northern California's Sierra Nevada is expected to break down بسرعة starting Friday evening as a powerful storm delivers feet of snow and rapidly lowering snow levels that will overtake major mountain routes.”

— National Weather Service in Sacramento

What’s next

Officials warn that the Friday evening commute could be impacted early, but the most dangerous conditions will arrive Saturday into Sunday as snow levels fall and accumulation accelerates. Travelers are urged to check Caltrans road conditions through QuickMap or by dialing 511 before heading into the mountains.

The takeaway

This major winter storm has the potential to significantly disrupt travel and transportation in the Sierra Nevada region, underscoring the importance of preparedness and safety for residents and visitors alike when navigating treacherous mountain conditions.