The child, Zaylee Schlect, was the daughter of a volunteer firefighter who was working during the storm that downed trees throughout the state on Tuesday night. She was killed in Otis, a town near the coast. Others inside the home were uninjured, authorities said.
In Nevada, a storm dropped 2 feet of snow, and another foot was expected in the upper elevations around Lake Tahoe. All major Sierra passes were closed Wednesday night, including a 50-mile stretch of U.S. Interstate 80 — from about 50 miles east of Sacramento, California, in the foothills near Colfax to Truckee, about 30 miles southwest of Reno, Nevada.
"We are looking at near white-out conditions," Nevada Department of Transportation spokeswoman Meg Ragonese said earlier Wednesday when they closed the only state highway connecting Reno to Lake Tahoe.
Workers planned to trigger man-made avalanches along the Mount Rose Highway and plow the road again before reopening it late Wednesday or Thursday. Earlier, a small avalanche briefly trapped three vehicles on an access road at a nearby ski resort, but no one was hurt.
Nevada state trooper Dan Gordon said visibility was near zero at times, but there were no reports of major accidents. "Just a lot of slide-offs and roadway conditions that are just horrendous — really treacherous," he said. Even cars with chains were getting stuck and sliding off the road, he said.
The storm, which was making its way toward Utah and the Rockies, could be a boon for drought-plagued California by boosting the snowpack that provides about a third of the state's water in normal years when it melts in warm, dry months.
Flash flood watches were issued for most of the Sierra along the Nevada-California line, where the National Weather Service said the potential for another 6 to 12 inches of rain would create serious flooding concerns into the weekend.
Some highways flooded in the San Francisco Bay Area, and mud and rockslides were reported in the Santa Cruz Mountains. The San Lorenzo River was swollen and the Big Sur River was also above flood stage.
Flood warnings and watches were issued for 11 counties in the region, and forecasters said heavy rains would last through Thursday. Elsewhere, the snowiest day in nearly a century was recorded Tuesday in Medford, Oregon, where more than 8 inches fell at the airport, according to the National Weather Service. Eleven inches of snow fell on a December day in 1919.
In Utah, snow that accumulated over several days caused the roof of a business to collapse in Provo. No injuries were reported. Snow was also falling in Wyoming, where a winter storm warning was posted for much of the Interstate 80 corridor, including Cheyenne. Heavy snow was also expected in Colorado.
In New Mexico, forecasters said a blustery winter storm will produce significant snowfall and strong winds across much of the northern and eastern parts of the state beginning late Wednesday and peaking early Friday.
Bender reported from San Francisco