Winter storms in US West Coast increase risk of mudslides, floods in California, power outages in Washington
The system, known as an atmospheric river, snaked through southern Oregon, Northern California and western Nevada while feeding on a deep plume of moisture stretching across the Pacific Ocean to near Hawaii, the National Weather Service said.
An atmospheric river snaked through southern Oregon, Northern California and western Nevada while feeding on a deep plume of moisture stretching across the Pacific Ocean to near Hawaii
Winter storm warnings were posted in the Sierra Nevada, where the forecast said up to 7 feet of new snow could be dumped at elevations above 9,000 feet
In Washington, thousands of Puget Sound Energy customers lost power, and Interstate 90 was closed for a second day on Wednesday
Los Angeles: Heavy rain again raised the risk of mudslides in Southern California burn areas, where evacuations were ordered during a powerful storm that flooded roads, toppled trees and cut power further north.
The system, known as an atmospheric river, snaked through southern Oregon, Northern California and western Nevada while feeding on a deep plume of moisture stretching across the Pacific Ocean to near Hawaii, the National Weather Service said. The tempest followed more than a week of severe weather in the Pacific Northwest and was the latest in a series that has all but eliminated drought-level dryness in California this winter.
Mandatory evacuations were in effect for areas near a burn scar in the Santa Ana Mountains southeast of Los Angeles where officials said the risk of debris flows was high.
Tim Suber said he has lost count of how many times his hillside neighbourhood in Lake Elsinore has been evacuated between last summer's devastating wildfire and this winter's succession of storms. "I'm not going this time," Suber said on Wednesday after Riverside County sheriff's deputies warned him that he could end up trapped if roads flood. "I've got 35 chickens and a daughter who won't leave them behind. So we're staying."
The real estate agent said he's confident culverts and washes in the area will handle any runoff after crews removed dozens of truckloads of dirt following the last storm. But just in case, "my car is gassed up and ready to go at a moment's notice," said 54-year-old Suber.
Winter storm warnings were posted in the snow-laden Sierra Nevada, where the forecast said up to 7 feet (2.1 meters) of new snow could be dumped at elevations above 9,000 feet (2,743 meters).
The National Weather Service recorded winds gusting to 132 miles per hour (213 kilometres per hour) atop the Mount Rose ski resort southwest of Reno, Nevada. A backcountry avalanche warning was issued throughout the Sierra.
"We are still trying to dig out of the last system, and we have another big storm here," said Kevin "Coop" Cooper, spokesman for Kirkwood Mountain Resort south of Lake Tahoe.
Five passengers suffered minor injuries when a Delta Air Lines flight headed from Southern California to Seattle encountered severe turbulence in the storm and was forced to make an emergency landing in Reno. Photos on social media showed a drinks cart upended and snacks and soda cans littering the aisle. One passenger tweeted the plane did two nose dives in "crazy turbulence" but the crew "handled it perfectly."
Snow heavily impacted stretches of vital Interstate 5 in far Northern California, causing closures and forcing tire-chain requirements.
A local state of emergency was declared in Shasta County because of significant storm damage, a Sheriff's Office statement said. Redding, the county seat, turned its library into a warming centre.
Power outages also hit thousands of utility customers in the region.
Widespread roadway flooding occurred north of San Francisco Bay. To the east, a swath of California's Central Valley was under a flood warning. At one point, flight arrivals at San Francisco International Airport were experiencing delays of several hours, the Federal Aviation Administration said.
In the Fresno County city of Sanger, police posted social media photos of wind damage to the roof of a school along with snapped trees.
Further south in Santa Barbara County, which was hard-hit by a devastating debris flow in January 2018, officials predicted rainfall rates were below thresholds for new flows, but residents were still advised to stay alert.
In Washington, thousands of Puget Sound Energy customers lost power, and Interstate 90 was closed for a second day on Wednesday across Snoqualmie Pass in the Cascade Mountains. The town of North Bend declared a state of emergency because of several feet of snow.
In Oregon, transportation officials closed about 20 miles (32 kilometres) of the westbound lanes of Interstate 84 in the Columbia River Gorge east of Portland because of icy conditions that caused numerous wrecks and stranded drivers for hours. Authorities brought stranded travellers water and food and tried to get gas to vehicles that needed it.
The West's winter storms have greatly aided California's water supply.
The most recent Sierra snowpack survey taken on 31 January was 100 percent of normal to date. More snow has fallen since.
In the Eastern Sierra, the Mammoth Mountain resort reported the latest storm had already added 8 inches (20.3 centimetres) to its summit season total, which is nearing 38 feet (11.5 meters).
Mammoth said it planned to keep its slopes open to skiing and boarding through the Fourth of July, at least.
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