Avalanche warning issued for Lake Tahoe area as intense winter storm slams region

The U.S. Forest Service has issued an avalanche warning for the central Sierra Nevada Mountains, including the greater Lake Tahoe region, as a powerful winter storm intensifies.

The warning, which is in effect through 5:15 a.m. Sunday, warns of high avalanche danger in the backcountry due to a combination of heavy snowfall and strong winds.

“High intensity snowfall combined with strong winds is expected to produce widespread areas of unstable snow both above and below treeline,” according to the forest service’s Sierra Avalanche Center. “Natural avalanches are very likely in the backcountry at this time.”

The warning affects the area between Yuba Pass (Highway 49) in the north and Ebbetts Pass (Highway 4) in the south, excluding ski areas and highways with avalanche mitigation programs.

A winter storm warning remains in effect across the Sierra Nevada and Lake Tahoe areas through 10 p.m. Saturday, as heavy snow and strong winds continue to create hazardous conditions. 

Snowfall up to 30 inches is expected at higher elevations, according to the National Weather Service, while lower elevations could see up to 12 inches. 

Winds will gust up to 100 mph on ridges, with dangerous travel conditions anticipated. 

The storm is also bringing high surf on Lake Tahoe, with waves of 2 to 5 feet. 

“Persons should delay travel if possible. If travel is absolutely necessary, drive with extreme caution and be prepared for sudden changes in visibility,” the weather service said. 

The Sierra Avalanche Center additionally advises against travel in or near avalanche-prone areas and urges outdoor enthusiasts to stay informed via their website for the latest updates on conditions via www.sierraavalanchecenter.org or www.avalanche.org.

Reach Aidin Vaziri: avaziri@sfchronicle.com