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Flooding and mudslides as deadly storm hits California


A deadly Pacific storm, the second “Pineapple Express” weather system to sweep the west coast of the US in less than a week, dumped torrential rain over southern California yesterday, triggering street flooding and mudslides throughout the region.

At least two people were killed by wind-toppled trees on Sunday – an 82-year-old man in the former gold rush town of Yuba City and a 45-year-old man at Boulder Creek in the coastal Santa Cruz Mountains

Extreme-weather advisories for floods, high wind and winter storm conditions were posted on yesterday across parts of the US state and southwestern Arizona where around 35 million people live, and authorities urged residents to limit their driving.

The national weather service documented staggering rainfall amounts from the storm, which lashed northern California on Sunday with hurricane-force gusts of wind, along with heavy rain that intensified as the system moved south on Sunday night and yesterday.

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A homeowner, who was evacuated during severe storms, returns to pick up some of his belongings

The National Weather Service (NWS) said more than 25cm of rain had fallen since Sunday across the Los Angeles area, the nation’s second-largest city, with much more expected before the downpour was due to taper off later in the week.

Nearly 30cm rain was measured over a 24-hour period on the campus of the University of California at Los Angeles (UCLA).

“We’re talking about one of the wettest storm systems to impact the greater Los Angeles area” since records began, Ariel Cohen, chief NWS meteorologist in LA, told an evening news conference.

“Going back to the 1870s, this is one of the top three.”

An aerial view of a Beverly Crest home that was pushed off its foundation by a mudslide Beverly Glen Boulevard in Los Angeles

US President Joe Biden spoke to California Governor Gavin Newsom and Los Angeles Mayor Karen Bass and pledged to provide federal aid to areas hard hit by the storm, the White House said.

The Los Angeles Police Department reported scores of traffic collisions with injuries since the storm began, many more than usual, while city Fire Chief Kristin Crowley said her crews had responded to at least 130 flooding incidents by yesterday morning.

In one such incident, a fire department helicopter team rescued a man who had jumped into the churning waters of the Pacoima Wash, a concrete flood channel, in an attempt to save his dog, department officials said.

A car is buried following a mudslide

The man was ultimately hoisted to safety, as seen in video footage shot by a firefighter and posted to social medial, while his pet managed to swim to the edge and also survived.

Second atmospheric river in days

The intense rainfall, with heavy snow in high-elevation mountain areas, was carried to California by a storm system meteorologists call an atmospheric river, a vast airborne current of dense moisture funnelled inland from the Pacific.

The latest storm, and a less powerful one that hit California last Wednesday and Thursday, also qualified as a “Pineapple Express,” a type of atmospheric river originating from the subtropical waters around Hawaii.

A view of the swollen California river

Winds gusting to 121km/h on Sunday downed trees and utility lines across the San Francisco Bay Area and California’s Central Coast, knocking out power to roughly 875,000 homes at the storm’s peak in that region.

The greatest flash-flooding threat yesterday centred on southern California, the NWS said, as the system slowly pivoted and pushed farther into the interior of California, but forecasters said “catastrophic” impacts were unlikely.

Mark Morris shovels out mud blocking his garage after a mud slide

“There’s widespread, significant flooding, and locally serious and severe flooding, but nothing that is completely off-the-walls insane,” UCLA meteorologist and climate scientist Daniel Swain said during a YouTube briefing.

Hillside communities hardest hit

A number of upscale communities built on the slopes of the Hollywood Hills, Beverly Hills and Topanga Canyon were among the hardest hit by landslides.

Los Angeles officials reported 120 mudslides and debris flows throughout the city yesterday, and at least 25 structures damaged by heavy rainfall or mudslides as of the evening, Ms Crowley said.

Alina Danovitch, 12, Ryan Davis, 18, and his brother Duncan, 11, check out the damage on Caribou Lane in Los Angeles after a home slid of its foundation damaging other homes

Beverly Hills resident Jeb Johenning, standing in a neighbourhood where cars stood half buried in muck and debris, said he noticed three fissures had opened on a hillside near his home, releasing “an avalanche of mud” down the slope.

“I was driving up here last night, right after the Grammys, and coincidentally, my neighbour, who was in this SUV behind us, was being dropped off at his house, and the driver’s coming down the hill, and the mud is chasing the driver,” Mr Johenning recalled.

A view of muddy road as vehicles pass in Beverly Crest neighbourhood

Still, the overall extent of property damage in the region appeared less severe than might have been expected given record amounts of precipitation, Mr Swain said, citing two possible reasons.

Rainfall rates were diminishing as the storm wore on, and last summer’s Southern California wildfire season was mild compared with some previous years, leaving more hillsides and canyon walls able to withstand a heavy soaking without collapse.

Flooding nevertheless posed a considerable hazard.

Rescue teams pulled dozens of people to safety statewide, mostly motorists trapped in their cars by rising waters when they tried to drive through flooded roadways, Brian Ferguson, spokesperson for the Governor’s Office of Emergency Services, said.

Evacuation orders were in effect for several neighbourhoods at particularly high risk of flash floods and mudslides, he said.

“We’re not out of the woods yet,” Mr Ferguson said. “There could continue be very dangerous impacts all through southern California today and tomorrow.”



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