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SAN FRANCISCO — <\/span>Search and rescue crews were looking for multiple backcountry skiers feared missing Tuesday after a reported avalanche<\/a> in Northern California as a powerful winter storm<\/a> moved through the state, authorities said.<\/p>\n The Nevada County Sheriff’s Office received a 911 call at about 11:30 a.m. from someone reporting an avalanche with people buried, said Ashley Quadros, a spokesperson. <\/p>\n The sheriff\u2019s office, the sheriff\u2019s Search & Rescue team and a crew with the California Department of Forestry and Fire Protection were combing the area of Castle Peak, which is northwest of Lake Tahoe, Quadros said. <\/p>\n “It has been reported that a group of back country skiers was involved in the incident, with several members of the party missing at this time,\u201d the sheriff\u2019s office wrote in a Facebook post.<\/p>\n California is being walloped this week by a powerful winter storm carrying treacherous thunderstorms, high winds and heavy snow in mountain areas. <\/p>\n According to the Sierra Avalanche Center of the Tahoe National Forest based in Truckee, the area in the Central Sierra Nevada, including the Greater Lake Tahoe region, was facing high avalanche danger in the backcountry with large slides expected to occur Tuesday and into Wednesday. <\/p>\n The dangerous conditions were caused by rapidly accumulating snowfall piling on already fragile snowpack layers coupled with gale-force winds. <\/p>\n Several ski resorts around Lake Tahoe were fully or partially closed due to the extreme weather. The resorts along highways have avalanche mitigation programs and were not expected to be at as high of a risk as the backcountry where travel in, near, or below the avalanche terrain was strongly discouraged, the center said.<\/p>\n \u201cIt\u2019s particularly dangerous in the backcountry right now just because we\u2019re at the height of the storm,” said Brandon Schwartz, Tahoe National Forest lead avalanche forecaster at the center.<\/p>\n Experts rely on people who witness an avalanche or its aftermath to know when and where an avalanche has occurred, Schwartz said. <\/p>\n Castle Peak, a 9,110-foot (2,777-meter) peak in the Donner Summit area of the Sierra Nevada, is a popular backcountry skiing destination. In the nearby town of Soda Springs, at least 30 inches (76 centimeters) of snow had fallen in the last 24 hours, according to the Soda Springs Mountain Resort. <\/p>\n Forecasters said the western slope of the Sierra Nevada in northern Shasta County \u2014 including portions of Interstate 5 \u2014 and parts of the state\u2019s Pacific Coast Range could see up to 8 feet (2.4 meters) of snow before the storm moves through late Wednesday.<\/p>\n The storm wreaked havoc on roadways spanning from Sonoma County to the Sierra Nevada. Traffic was halted temporarily in both directions on I-80 near the Nevada state line due to spinouts and crashes, the California Department of Transportation reported.<\/p>\n In January, an avalanche<\/a> in the region buried a snowmobiler<\/a> in snow and killed him, authorities said. Each winter, 25 to 30 people die in avalanches in the U.S., according to the National Avalanche Center. <\/p>\n _____<\/p>\n Watson reported from San Diego. <\/p>\n<\/div>\n