Sierra Nevada Winter Storm Disrupts Travel, Triggers Avalanche Warnings

A powerful late-season winter storm is battering California's Sierra Nevada mountains today, April 13, 2026, forcing road closures and triggering avalanche warnings. The National Weather Service reports up to 3 feet of snow at higher elevations, with wind gusts exceeding 60 mph along mountain ridges.

The storm comes as a surprise to many Californians after an unusually dry February and March. Interstate 80 and Highway 50 remain closed over Donner Summit due to whiteout conditions, stranding hundreds of travelers. Chain requirements are in effect for all other Sierra passes.

Avalanche danger remains high across the Tahoe Basin, according to the Sierra Avalanche Center. Backcountry access points at Palisades Tahoe and Kirkwood ski resorts have been closed as a precaution. The storm has already caused at least two natural avalanches in remote areas.

Pacific Gas & Electric reports scattered power outages affecting nearly 8,000 customers across Placer and Nevada counties. Crews are working to restore service but face dangerous conditions. The California Highway Patrol has responded to over two dozen weather-related accidents since Friday night.

Meteorologists expect the storm to taper off by Tuesday, but cold temperatures will persist through midweek. The sudden snowfall provides temporary drought relief but won't significantly impact California's long-term water supply, according to state hydrologists.

The storm is trending nationally as ski resorts extend their seasons and social media fills with dramatic footage of snow-covered highways. Many travelers are sharing stories of unexpected winter detours during what's normally spring break season for California schools.