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Winter storm pushes Sierra Nevada mountains, triggers avalanche warning

A winter storm with strong winds and potential for several feet of snow blew into the Sierra Nevada mountains on Saturday, causing thousands of power outages in California, closing mountain roads in Lake Tahoe and sending avalanche warnings in the backcountry. has been issued. The storm is expected to bring up to four feet of snow to the highlands around Lake Tahoe by Monday morning.

The Sierra Mountains, which stretch 250 miles north of Reno and south of Yosemite National Park, had winter storm warnings until at least Sunday.

“In whiteout conditions, travel will be very difficult or impossible,” he said. weather service Said in Reno on Saturday when it started raining.

Flood warnings were in effect from Sacramento to the California coast near San Francisco.

This image from a Caltrans traffic camera shows snow conditions for the California SR-89 Snowman on December 10, 2022 in the Shasta Trinity National Forest, California.
This image from a Caltrans traffic camera shows snow conditions for the California SR-89 Snowman on December 10, 2022 in the Shasta Trinity National Forest, California.

Caltrans via AP


The storm will affect the California coastline in the southwest this weekend, with “heavy to excessive rainfall along the coastal areas of the Golden State and heavy snow spreading from the Sierra to much of the western mountainous region,” according to the National Weather Service. the bureau said. statementExcessive rainfall will affect the central California coast on Saturday and Southern California around Los Angeles and San Diego on Sunday.

The U.S. Forest Service has issued an avalanche warning for the mountains west of Lake Tahoe, saying that “several feet of fresh snow and strong winds will create dangerous avalanche conditions.”

Highway Patrol said California Highway 89 was closed due to heavy snow between the City of Tahoe and South Lake Tahoe, California. Interstate 80 between Reno and Sacramento remained open, but most vehicles required chains on their tires.

More than 30,000 customers in the Sacramento area experienced a power outage Saturday morning. By noon, all but about 3,300 had recovered. But forecasters warned that gusts of up to 50 mph could topple tree branches and power lines later in the day.

About 10 inches of snow had already fallen at Mammoth Mountain Ski Resort south of Yosemite.

Resort spokeswoman Lauren Burke said: “Every week or so it looks like another big storm is coming.

Storm warnings are in effect for most of the Sierra through Sunday and around Tahoe through Monday.

As much as 18 to 28 inches of snow is expected over the weekend at lake level, with winds of up to 4 feet, 50 mph and gusts up to 100 mph expected at elevations above 7,000 feet.

On the eastern slopes of the Sierra, a Winter Weather Warning will be in effect for Reno, Sparks and Carson City Saturday from 10pm-10am with 1 to 3 inches of snow cover in the valley floors and up to 8 inches at 5,000 feet elevation .

The system will result in “large and severe storms early next week” in the central and southern United States, with heavy snow, rain and severe weather, according to the Weather Service. Snow spread across the central Rocky Mountains and mountains in Arizona on Sunday and is expected to total between 6 and 12 inches by early Monday morning, according to the Bureau of Meteorology.

https://www.cbsnews.com/news/winter-storm-sierra-nevada-avalanche-warning/ Winter storm pushes Sierra Nevada mountains, triggers avalanche warning

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